Category: Investing

Treasury Bills vs CDs: Tax Differences | 2026 Guide

Treasury Bills vs CDs: Tax Differences

Subhash Rukade

Founder, FinanceInvestment

Published: Sep 23, 2026
Updated: Sep 23, 2026
Reading Time: 10–12 min

A practical guide to how Treasury bills and CDs are taxed and compared after taxes.

Treasury Bills vs CDs: Tax Differences

Treasury Bills vs CDs tax differences At first glance, Treasury bills and certificates of deposit can seem similar. Both can hold your money for a defined period and generate income. But Treasury Bills vs CDs: Tax Differences can change the amount you keep after taxes. A rate that looks attractive before taxes may not produce the same after-tax result.

Treasury bill interest is generally subject to federal income tax, but interest from U.S. Treasury obligations is generally exempt from state and local income taxes. CD interest is generally taxable as interest income, while state and local taxes may also apply depending on where you live and the applicable rules.

This guide explains the difference in plain English. You’ll see how each investment creates taxable income, how that income is generally reported, and why your location can matter when comparing the two. For a broader introduction to Treasury bills, see our complete Treasury Bills guide.

What You’ll Learn

How Treasury bill interest is generally taxed federally.
How CD interest is generally treated for federal tax purposes.
Why state and local taxes can create a difference between the two.
How T-bill and CD interest is generally reported.
Why after-tax income can be more useful than comparing stated yields alone.
Common tax-reporting mistakes to watch for.

Quick Answer: How Do Treasury Bills and CDs Differ on Taxes?

The short answer: Both Treasury bill interest and CD interest are generally subject to federal income tax. The major difference is that interest from U.S. Treasury obligations is generally exempt from state and local income taxes, while CD interest may also be subject to applicable state and local income taxes.

Key Takeaways

T-bills: Interest is generally subject to federal income tax.
CDs: Interest is generally taxable for federal income tax purposes.
State and local taxes: Interest from U.S. Treasury obligations is generally exempt from these taxes.
CD taxation: State and local treatment depends on the applicable rules where you live.
T-bill reporting: Treasury interest is generally reported on Form 1099-INT, with Treasury obligations generally shown in Box 3.
CD reporting: Banks generally report taxable CD interest on Form 1099-INT when the applicable reporting requirements are met.
After-tax income: The amount you keep can differ even when two investments have similar pre-tax yields.

BOTTOM LINE: Treasury bills are generally not free from federal income tax. Their main tax distinction is the general exemption of Treasury interest from state and local income taxes.

Treasury Bills vs CDs: At a Glance

The main tax difference becomes easier to see when federal, state, and local taxes are separated. Both Treasury bills and CDs generally create income that is taxable at the federal level. However, interest from U.S. Treasury obligations is generally exempt from state and local income taxes, while CD interest may be subject to those taxes under applicable rules.

Quick Facts

Tax Detail	Treasury Bills	CDs
Federal income tax	Generally applies	Generally applies
State & local income tax	Generally exempt	May apply under applicable rules
Federal tax reporting	Generally Form 1099-INT, Box 3	Generally Form 1099-INT when reportable
Income structure	Usually issued at a discount and paid at face value at maturity	Usually earns stated interest according to the CD terms

Best For Comparing

The tax comparison is especially useful when you are deciding between similar pre-tax yields. Your state and local tax situation can affect the amount of income you keep from a CD, while Treasury interest generally receives the state and local exemption.

QUICK TAKE: The key numbers are not just the quoted yields. Look at the federal tax treatment, your applicable state and local taxes, and the resulting after-tax income.

Complete Beginner Guide to Treasury Bills vs CDs Tax Differences

Treasury Bills vs CDs: Tax Differences When comparing Treasury bills and CDs, the advertised yield is only part of the picture. Both can generate taxable income, but the tax treatment is not identical. The biggest difference is what happens at the state and local level.

1. How Are Treasury Bills Taxed?

Treasury bills are generally issued at a discount and mature at face value. For example, you might pay $9,800 for a $10,000 T-bill. If you hold it to maturity, the $200 difference is generally treated as interest income for federal tax purposes. Treasury bill interest is generally exempt from state and local income taxes. The IRS says Treasury interest is generally reported on Form 1099-INT, Box 3.

2. How Are CDs Taxed?

Interest from a certificate of deposit is generally taxable income for federal purposes. For many CDs, you include interest when you receive it or when it becomes available to you without a substantial penalty. Some deferred-interest CDs can follow different timing rules. CD interest also does not receive the federal exemption from state and local income taxes that applies to Treasury obligations.

3. Why Can Your State Matter?

Imagine a T-bill and a CD producing similar pre-tax income. If you live in a state or locality that taxes income, the CD may create an additional state or local tax cost, while qualifying Treasury interest generally remains exempt from those taxes. That can change the after-tax comparison.

4. How Is the Income Reported?

Treasury interest is generally shown on Form 1099-INT, Box 3. CD interest is generally reported by the financial institution on Form 1099-INT when the applicable reporting requirements are met. Keep your forms and purchase records, and remember that taxable interest generally must be reported even if a Form 1099-INT is not received.

EASY WAY TO REMEMBER: Both investments can create federal taxable income. The major tax advantage of Treasury bills is that interest from U.S. Treasury obligations is generally exempt from state and local income taxes.

How the Tax Treatment Works

A simple way to compare Treasury bills and CDs is to follow four questions: how the income is generated, when it is generally taxable, which taxes can apply, and how the income is reported. The products work differently, but these steps make the tax comparison easier to follow.

Step 1: Understand How the Income Is Created

A Treasury bill is generally issued at a discount and pays its face value at maturity. For a standard T-bill held to maturity, the difference between the purchase price and the amount received is generally treated as interest income. A CD normally earns interest according to the terms set by the financial institution.

Step 2: Consider Federal Income Tax

Interest from both investments is generally subject to federal income tax. The amount of federal tax you ultimately owe depends on your individual tax circumstances, so two investors receiving the same amount of interest may have different after-tax results.

Step 3: Check State and Local Taxes

This is the key distinction. Interest from U.S. Treasury obligations is generally exempt from state and local income taxes. CD interest does not receive that Treasury-specific exemption, so applicable state or local income taxes may affect the amount you keep.

Step 4: Compare After-Tax Income

Once you know the pre-tax income and the taxes that may apply, you can make a more meaningful comparison. A slightly different advertised yield can produce a different after-tax result once federal and applicable state or local taxes are considered.

THE SIMPLE VERSION: Both T-bills and CDs are generally subject to federal income tax. The major difference is that Treasury interest is generally exempt from state and local income taxes.

Benefits & Drawbacks of the Tax Differences

The tax gap between Treasury bills and CDs may look small on paper, but it can affect your actual income when state or local income taxes apply. The impact depends on your location, tax situation, and the return offered by each investment.

Benefits to Consider

State and local tax exemption: Interest from U.S. Treasury obligations is generally exempt from state and local income taxes.
Useful after-tax comparison: The exemption can make Treasury bills more tax-efficient than an otherwise similar taxable investment for some taxpayers.
Clear tax classification: Treasury interest is generally reported separately from other interest on Form 1099-INT, with Treasury obligations generally shown in Box 3.

Drawbacks to Consider

Federal tax still applies: Treasury bills generally do not avoid federal income tax.
CDs may have different tax and account terms: Interest timing, early-withdrawal penalties, and account terms can affect the comparison.
Tax is not the whole picture: Yield, maturity, liquidity, transaction costs, FDIC insurance for eligible CDs, and the nature of the underlying investment also deserve attention.

QUICK TAKE: Treasury bills generally have a state and local income-tax advantage, but that does not automatically make them the better choice. Compare the applicable taxes, return, terms, and access to your money together.

Treasury Bills vs CDs: Detailed Tax Comparison

Treasury bills and CDs can both produce taxable income, but their tax treatment is not identical. The biggest difference is the treatment of Treasury interest at the state and local level.

Tax Factor	Treasury Bills	CDs
Federal income tax	Generally applies	Generally applies
State income tax	Generally exempt	May apply under applicable state rules
Local income tax	Generally exempt	May apply under applicable local rules
How income is generally created	Usually through the discount between purchase price and maturity value	Interest under the CD’s terms
Common federal reporting	Form 1099-INT, generally Box 3	Form 1099-INT when reportable

Why the Tax Difference Matters

Suppose a Treasury bill and a CD generate the same amount of pre-tax income. For a taxpayer who owes state or local income tax, the CD may produce a different after-tax result because qualifying Treasury interest is generally exempt from those taxes. The actual difference depends on the investor’s tax situation and the applicable rules.

COMPARE THE AFTER-TAX RESULT: A higher stated yield does not necessarily produce more income after taxes. Look at the applicable federal, state, and local tax treatment when comparing a T-bill with a CD.

Costs, Risks & Expert Tips

The tax difference is important, but it should not be viewed by itself. The purchase price, investment terms, access to your money, and other costs can all affect the return you ultimately keep.

Costs to Check

T-bills: Check brokerage fees, bid-ask spreads, and any other transaction costs that may apply.
CDs: Review early-withdrawal penalties, minimum requirements, and the CD’s account terms before investing.
Taxes: Compare potential income after applicable federal, state, and local taxes rather than looking only at the stated yield.

Risks and Tax Details to Watch

Treasury interest is generally subject to federal income tax but exempt from state and local income taxes. CD interest is generally federally taxable and may also be subject to applicable state and local taxes. Selling a T-bill before maturity or using a nonstandard CD structure can require additional tax or reporting considerations.

EXPERT TIP: Keep purchase confirmations, maturity details, account statements, and tax forms together. When comparing a T-bill with a CD, consider the applicable tax rules and the investment terms before focusing on the headline yield.

Common Mistakes & Real-Life Example

Tax differences can be easy to overlook when two investments appear to offer similar returns. A few common mistakes can lead to an incomplete comparison between Treasury bills and CDs.

Common Tax Mistakes to Avoid

Assuming T-bills are tax-free: Treasury bill interest is generally subject to federal income tax.
Comparing only the advertised yield: The amount you keep after applicable taxes may be different from the headline return.
Ignoring state or local taxes on CDs: CD interest does not receive the general state and local income-tax exemption that applies to qualifying U.S. Treasury interest.
Forgetting tax records: Keep applicable Form 1099-INT forms and investment records so you can report taxable income accurately.

A Simple $10,000 Example

Imagine an investor puts $10,000 into a Treasury bill and another $10,000 into a CD. For illustration only, assume each investment produces $400 of taxable income before taxes. Both amounts are generally subject to federal income tax. If the investor’s state or local rules impose income tax on CD interest, the CD could create an additional state or local tax liability, while qualifying Treasury interest is generally exempt from those taxes.

This example does not determine the investor’s actual tax bill. Federal tax depends on the investor’s circumstances, and state and local treatment can vary. The key lesson is to compare the after-tax result rather than relying only on the advertised rate.

QUICK CHECK: Compare the same investment amount, similar time period, expected income, applicable taxes, and any account or transaction costs before deciding how the two options fit your situation.

Who Should Consider Treasury Bills or CDs?

The appropriate option depends on your goals, tax situation, time horizon, and how you want to access your money. Tax treatment is an important consideration, but it is only one part of the comparison.

Treasury Bills May Be Relevant If…

You want short-term U.S. Treasury securities with defined maturities.
State or local income-tax treatment is important when comparing after-tax income.
You want to include Treasury securities as part of a broader fixed-income strategy.

CDs May Be Relevant If…

You prefer a bank or credit-union deposit product with a stated term and interest rate.
You are comfortable with the CD’s maturity period and understand its early-withdrawal terms.
Eligible FDIC or NCUA insurance coverage is an important part of your deposit strategy, depending on where the CD is held.

REMEMBER: Compare tax treatment, maturity, liquidity, yield, applicable insurance coverage, and account terms together rather than focusing on one feature alone.

Frequently Asked Questions

Here are common questions about Treasury bills vs CDs tax differences, including federal taxation, state and local taxes, reporting, and tax timing.

1. Are Treasury bills or CDs taxed less?

Both are generally subject to federal income tax. Interest from U.S. Treasury obligations is generally exempt from state and local income taxes, while CD interest may be subject to applicable state and local taxes.

2. Are T-bills tax-free?

No. Treasury bill interest is generally subject to federal income tax. The key tax benefit is the general exemption from state and local income taxes.

3. Are CD earnings taxable?

Yes. CD interest is generally taxable for federal income tax purposes. State and local taxation depends on the applicable rules and the investor’s jurisdiction.

4. Do T-bills avoid state income tax?

Generally, yes. Interest from U.S. Treasury bills, notes, and bonds is generally exempt from state and local income taxes.

5. Do CDs pay state income tax?

CD interest may be subject to state or local income taxes. The exact treatment depends on the applicable jurisdiction and tax rules.

6. How is T-bill interest reported?

Treasury bill interest is generally reported on Form 1099-INT, with Treasury interest shown in Box 3. Taxpayers generally must report taxable interest even if they do not receive a Form 1099-INT.

7. When is CD interest taxed?

For many CDs, interest is generally included in income when received or when you are entitled to receive it without paying a substantial penalty. Certain CDs with deferred interest or longer terms can have different OID reporting rules.

8. Should I compare T-bills and CDs by after-tax yield?

Comparing potential after-tax income can give you a clearer picture than comparing stated yields alone, especially when state or local taxes may apply to CD interest.

IMPORTANT: Tax rules can vary based on the investment structure and your individual circumstances. Use current IRS guidance and your tax professional when a specific tax situation requires personalized advice.

Final Verdict: Treasury Bills vs CDs: Tax Differences

The main tax difference between Treasury bills and CDs is straightforward: both are generally subject to federal income tax, but interest from U.S. Treasury obligations is generally exempt from state and local income taxes. CD interest may also be subject to applicable state and local taxes.

That difference can affect the amount you keep after taxes, particularly when state or local income taxes apply. However, taxes are only one part of the comparison. Maturity, liquidity, yield, early-withdrawal terms, and the applicable protections for the investment should also be reviewed.

For a broader introduction to Treasury securities, see our Treasury Bills Explained guide before comparing specific investments.

KEY POINT: Compare Treasury bills and CDs using potential after-tax income along with maturity, liquidity, yield, and investment terms rather than relying on the advertised rate alone.

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Keep exploring FinanceInvestment for practical guides on Treasury bills, CDs, taxes, and personal finance. Our goal is to make complex money topics easier to understand.

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Treasury Bills Explained
•
CD vs Treasury Bills

September 22, 2026

Do You Pay Federal Tax on Treasury Bills? 2026 Guide

Do You Pay Federal Tax on Treasury Bills?

Subhash Rukade

Founder, FinanceInvestment

Published: September 23, 2026
Updated: September 23, 2026
Reading Time: 10–12 min

Do You Pay Federal Tax on Treasury Bills?

Yes, Treasury bills are generally subject to federal income tax. If you are asking, do you pay federal tax on Treasury bills, the key point is simple: T-bill interest is taxable at the federal level. Treasury bills are U.S. government securities, but that does not make their interest exempt from federal income tax. At the same time, Treasury bill interest is generally exempt from state and local income taxes. IRS guidance explains this distinction for Treasury obligations.

The way T-bill interest is earned can also look different from a bank savings account or CD. Treasury bills are generally issued at a discount and mature at face value. For a standard T-bill held to maturity, the difference between the purchase price and the amount received at maturity is generally treated as interest income for federal tax purposes. Applicable Treasury interest is generally reported on Form 1099-INT, Box 3.

Understanding these rules can make it easier to compare Treasury bills with other short-term investments. For a broader explanation of maturities, pricing, auctions, and tax treatment, see our complete Treasury Bills guide.

What You’ll Learn

How federal income tax applies to Treasury bill interest.
When T-bill interest is generally reported for federal tax purposes.
How Treasury interest appears on Form 1099-INT.
Why T-bills generally receive state and local income-tax treatment that differs from federal tax.
How T-bill taxation compares with CDs, savings accounts, and money market accounts.
Common federal tax-reporting mistakes to watch for.

Quick Answer: Do You Pay Federal Tax on Treasury Bills?

Yes. Interest from Treasury bills is generally subject to federal income tax. Treasury bill interest is also generally exempt from state and local income taxes. For Treasury bills, the applicable interest is generally reported on Form 1099-INT, Box 3.

Key Takeaways

Federal tax applies: Treasury bill interest is generally taxable for federal income-tax purposes.
State and local exemption: Treasury bill interest is generally exempt from state and local income taxes.
T-bill discount: For a standard T-bill held to maturity, the difference between the purchase price and the amount received at maturity is generally treated as interest income.
1099-INT Box 3: Treasury bill interest is generally reported in Box 3 of Form 1099-INT rather than Box 1.
Not completely tax-free: The state and local tax exemption does not eliminate federal income tax.
Tax timing: For a standard T-bill held to maturity, the IRS generally says taxpayers report the interest when the bill is paid at maturity, subject to the applicable tax rules.

Bottom line: Treasury bills are generally federally taxable, but their interest receives an exemption from state and local income taxes. The exact tax treatment can depend on the type of Treasury transaction and the taxpayer’s circumstances.

Treasury Bills and Federal Tax at a Glance

Treasury bills are generally subject to federal income tax. They are not federally tax-free investments. However, interest from U.S. Treasury obligations is generally exempt from state and local income taxes. This distinction is important when comparing T-bills with taxable bank deposits and other short-term investments.

Tax Detail	Treasury Bill Treatment
Federal income tax	Generally taxable
State income tax	Generally exempt
Local income tax	Generally exempt
Form 1099-INT	Treasury interest is generally reported in Box 3
Main tax benefit	Generally exempt from state and local income taxes

QUICK TAKE: Treasury bills are generally taxable at the federal level, while their interest is generally exempt from state and local income taxes. For example, if a T-bill produces $200 of interest, that interest is generally included in federal taxable income, subject to the applicable federal tax rules.

Complete Beginner Guide to T-Bill Federal Tax

Do You Pay Federal Tax on Treasury Bills? Understanding federal tax on Treasury bills starts with one simple rule: interest from Treasury bills is generally subject to federal income tax. A T-bill is issued by the U.S. Treasury, but that does not make its interest federally tax-free. At the same time, Treasury bill interest is generally exempt from state and local income taxes. See the IRS guidance on Treasury interest for the applicable federal tax rules.

1. How Do Treasury Bills Create Taxable Income?

Treasury bills are generally issued at a discount instead of paying regular coupon interest. For example, an investor could pay $9,800 for a T-bill with a $10,000 maturity value. If the bill is held to maturity, the $200 difference is generally treated as interest income for federal tax purposes.

2. Is the Entire T-Bill Amount Taxable?

No. In a standard purchase held to maturity, the amount originally invested is not itself the interest income. The taxable interest component is generally the difference between the purchase price and the amount received at maturity. The exact treatment can differ for certain transactions, including purchases or sales in the secondary market.

3. When Is T-Bill Interest Reported?

For a standard Treasury bill held to maturity, the IRS generally provides that the interest is reported when the bill is paid at maturity. Selling a T-bill before maturity can involve different tax considerations, so investors should retain purchase, sale, and maturity records.

4. Where Does Treasury Interest Appear?

Treasury interest is generally reported on Form 1099-INT, Box 3. IRS instructions identify Box 3 for interest on U.S. savings bonds and Treasury obligations. Investors should use the tax documents and records applicable to their specific transaction.

EASY WAY TO REMEMBER: Treasury bill interest is generally taxable at the federal level, generally exempt from state and local income taxes, and generally reported as Treasury interest in Box 3 of Form 1099-INT.

How Federal Tax on T-Bills Works

The federal tax treatment of a Treasury bill is easier to understand when you follow the investment from purchase to maturity. A standard T-bill generally does not make periodic coupon payments. Instead, it is issued at a discount and pays its face value at maturity. The difference between the purchase price and the amount received at maturity is generally treated as interest income for federal tax purposes.

Step 1: You Buy the Treasury Bill

For example, a T-bill with a $10,000 maturity value might be purchased for $9,800. The $200 difference is generally the interest income associated with the bill when it is held to maturity. Treasury bills are commonly issued with maturities such as 4, 8, 13, 26, and 52 weeks.

Step 2: The Bill Reaches Maturity

At maturity, the Treasury generally pays the bill’s face value. For a standard T-bill held to maturity, the difference between the purchase price and the maturity amount is generally treated as interest income rather than a separate capital gain.

Step 3: Federal Tax Applies

The interest is generally subject to federal income tax. However, interest from U.S. Treasury obligations is generally exempt from state and local income taxes. This creates an important tax distinction when comparing T-bills with taxable bank deposits.

Step 4: The Interest Is Reported

Treasury interest is generally reported on Form 1099-INT, Box 3. For a standard T-bill held to maturity, cash-method taxpayers generally report the interest when the bill is paid at maturity. A purchase or sale in the secondary market can involve different tax rules and reporting considerations.

THE SIMPLE VERSION: A standard T-bill is generally bought below face value, matures at face value, and the difference is generally treated as federally taxable interest. Treasury interest is generally exempt from state and local income taxes.

Benefits & Drawbacks of Federal Tax on Treasury Bills

Treasury bills are generally subject to federal income tax, but their interest is exempt from state and local income taxes. That combination can affect the after-tax comparison between T-bills and other interest-producing investments. The actual impact depends on the investor’s applicable tax situation and the type of transaction.

Potential Benefits

State and local tax exemption: Treasury bill interest is generally exempt from state and local income taxes.
Potential after-tax advantage: In a comparison with an otherwise similar taxable investment, avoiding applicable state and local income taxes can increase the amount of interest retained after those taxes.
Federal tax treatment is identifiable: Treasury interest is generally reported separately in Box 3 of Form 1099-INT, making it easier to identify the Treasury portion of reported interest income.

Potential Drawbacks

Federal tax still applies: The state and local exemption does not make Treasury bill interest federally tax-free.
After-tax results vary: The value of the state and local exemption depends on the applicable tax rules and the investment being compared.
Different transactions can have different rules: Buying or selling a T-bill in the secondary market can create additional tax and reporting considerations.

QUICK TAKE: The main tax benefit of Treasury bills is the general exemption from state and local income taxes. Federal income tax still applies, so comparing the complete after-tax result is more useful than looking only at the stated T-bill yield.

T-Bills vs. CDs vs. Savings vs. Money Market

Federal tax treatment can help explain an important difference between Treasury bills and common bank deposit products. Treasury bill interest is generally subject to federal income tax but exempt from state and local income taxes. Interest earned from bank CDs, savings accounts, and bank money market accounts is generally subject to federal income tax, while state and local treatment depends on the applicable rules.

Investment	Federal Tax	State & Local Income Tax	Common Federal Reporting
Treasury Bills	Generally applies	Generally exempt	Form 1099-INT, generally Box 3
Bank CDs	Generally applies	Depends on applicable state and local rules	Generally Form 1099-INT when reportable
Savings Accounts	Generally applies	Depends on applicable state and local rules	Generally Form 1099-INT when reportable
Bank Money Market Accounts	Generally applies	Depends on applicable state and local rules	Generally Form 1099-INT when reportable

One Important Distinction

A bank money market account is different from a money market mutual fund. A bank money market account is a deposit account that generally pays interest. A money market fund is an investment product, and its distributions can have different tax-reporting characteristics. This comparison refers specifically to bank money market accounts.

QUICK TAKE: Treasury bills have a specific federal, state, and local tax distinction: their interest is generally federally taxable but exempt from state and local income taxes. For bank deposit products, state and local treatment can differ. Compare the applicable tax rules along with yield, maturity, liquidity, and account terms.

Costs, Tax Risks & Expert Tips

Treasury bills generally do not pay periodic coupon interest. Instead, they are commonly issued at a discount and pay their face value at maturity. For a standard T-bill held to maturity, the difference between the purchase price and the amount received at maturity is generally treated as interest income for federal tax purposes. Other transactions can involve different tax rules.

Costs to Check

Transaction costs: If buying through a brokerage, check the firm’s pricing, bid-ask spread, or other applicable transaction costs.
After-tax return: Compare the T-bill’s yield after considering applicable federal tax and its state and local tax exemption.
Recordkeeping: Keep purchase confirmations, maturity information, sale records, and tax forms with your investment records.

Tax Risks to Understand

Federal tax still applies: Treasury bill interest is generally subject to federal income tax.
Tax forms are not the only consideration: Not receiving a Form 1099-INT does not by itself remove an applicable tax-reporting obligation.
Early sale: Selling a T-bill before maturity can involve tax and reporting considerations that differ from a standard held-to-maturity transaction.

Expert Tips for Cleaner Tax Reporting

For a standard T-bill held to maturity, keep the original purchase price and maturity amount available when reviewing your tax records. Treasury interest is generally reported on Form 1099-INT, Box 3. If a T-bill is sold before maturity or purchased in the secondary market, review the transaction records and applicable tax rules carefully.

EXPERT TIP: Keep your Treasury purchase, maturity, sale, and tax records together. For transactions outside a standard held-to-maturity purchase, consult the applicable IRS guidance or a qualified tax professional when needed.

Common Mistakes + Real-Life Example

Federal tax on Treasury bills is generally straightforward when a standard bill is purchased and held to maturity. Still, investors can misunderstand the state-tax exemption, overlook their tax records, or assume that an early sale follows exactly the same rules.

Mistake 1: Assuming T-Bills Are Completely Tax-Free

Treasury bill interest is generally exempt from state and local income taxes, but it is generally subject to federal income tax. The state and local exemption should not be confused with complete tax-free treatment.

Mistake 2: Ignoring Form 1099-INT

Treasury interest is generally reported in Box 3 of Form 1099-INT. Investors should review their tax documents and keep their own purchase, maturity, and transaction records. The absence of a tax form does not by itself determine whether income is reportable.

Mistake 3: Overlooking an Early Sale

A standard T-bill held to maturity has relatively straightforward treatment. Selling before maturity or buying a T-bill in the secondary market can involve additional tax and reporting rules, so the transaction records matter.

Real-Life Example: A $10,000 T-Bill

Suppose an investor buys a $10,000 face-value T-bill for $9,800 and holds it until maturity. The Treasury pays $10,000 at maturity, creating a $200 difference. For a standard T-bill held to maturity, that difference is generally treated as interest income for federal tax purposes. Treasury interest is generally exempt from state and local income taxes and generally appears in Box 3 of Form 1099-INT.

KEY LESSON: Treasury bills can receive a state and local income-tax exemption without being federally tax-free. For a standard held-to-maturity T-bill, keep the purchase and maturity records and review the applicable Treasury interest reported for federal tax purposes.

Who May Consider Treasury Bills?

Treasury bills may be relevant to investors looking at short-term U.S. government securities and evaluating how federal, state, and local taxes affect their interest income. Their tax treatment can be one factor when comparing T-bills with other short-term investments.

T-Bills May Be Relevant to Investors Who:

Want exposure to a U.S. Treasury security with a short maturity, generally 52 weeks or less.
Want to account for the general state and local income-tax exemption on Treasury interest.
Are comparing securities that are generally issued at a discount and pay face value at maturity.
Understand that Treasury bill interest is generally subject to federal income tax.
Want to compare potential after-tax income across different short-term investments.

KEEP IN MIND: Tax treatment is only one factor in evaluating a Treasury bill. Maturity, yield, liquidity, transaction costs, federal taxes, and the tax treatment of alternative investments can also affect the overall comparison.

Frequently Asked Questions

1. Do You Pay Federal Tax on Treasury Bills?

Yes. Interest from Treasury bills is generally subject to federal income tax. Treasury interest is generally exempt from state and local income taxes.

2. Are Treasury Bills Tax-Free?

No. Treasury bills are not completely tax-free. Their interest is generally taxable for federal income-tax purposes, while generally receiving an exemption from state and local income taxes.

3. How Is T-Bill Interest Taxed?

For a standard Treasury bill held to maturity, the difference between the purchase price and the amount received at maturity is generally treated as interest income for federal tax purposes.

4. Where Is Treasury Bill Interest Reported?

Treasury interest is generally reported on Form 1099-INT, Box 3. Investors should also keep their purchase, maturity, and other transaction records.

5. When Do You Report T-Bill Interest?

For a standard Treasury bill held to maturity, cash-method taxpayers generally report the interest when the bill is paid at maturity, subject to the applicable federal tax rules.

6. What If You Do Not Receive Form 1099-INT?

Not receiving Form 1099-INT does not by itself determine whether income is reportable. Investors should review their Treasury records and the applicable federal tax rules when preparing their return.

7. Are Treasury Bills Exempt From State and Local Income Taxes?

Generally, yes. Interest from U.S. Treasury obligations, including Treasury bills, is generally exempt from state and local income taxes.

8. Does Selling a T-Bill Before Maturity Change the Tax Treatment?

It can. A sale before maturity or a secondary-market purchase can involve additional tax and reporting considerations. The standard held-to-maturity treatment should not automatically be applied to every transaction.

QUICK ANSWER: Treasury bills are generally subject to federal income tax, while their interest is generally exempt from state and local income taxes.

Final Verdict: Do You Pay Federal Tax on Treasury Bills?

Yes. Treasury bill interest is generally subject to federal income tax. At the same time, interest from U.S. Treasury obligations is generally exempt from state and local income taxes. So, Treasury bills are not completely tax-free, but they do receive a specific state and local income-tax exemption.

For a standard T-bill held to maturity, the difference between the purchase price and the amount received at maturity is generally treated as interest income for federal tax purposes. Treasury interest is generally reported on Form 1099-INT, Box 3. A sale before maturity or a secondary-market purchase can involve additional tax and reporting considerations.

For a broader explanation of Treasury bill maturities, pricing, auctions, and tax treatment, see our complete Treasury Bills guide.

BOTTOM LINE: Treasury bills are generally subject to federal income tax, while their interest is generally exempt from state and local income taxes. When comparing T-bills with other investments, consider the applicable tax treatment along with yield, maturity, liquidity, and transaction costs.

Have a Money Question? Keep Exploring.

Treasury bill taxes can affect the income you actually keep after taxes. Continue exploring FinanceInvestment to understand T-bill pricing, yields, maturities, and other factors that can help you evaluate short-term investments.

📩 Get in Touch With FinanceInvestment

Have a money question or a topic you’d like us to cover? Send us a message.

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Treasury Bills Explained | Treasury Bill Price vs. Face Value

September 22, 2026

Are Treasury Bills Exempt From State Taxes? 2026 Guide

Are Treasury Bills Exempt From State Taxes?

Subhash Rukade

Founder, FinanceInvestment

Published: September 23, 2026
•
Updated: September 23, 2026
•
Reading Time: 10–12 min

Are Treasury Bills Exempt From State Taxes?

If you live in a state that charges individual income tax, the tax treatment of your investments can make a noticeable difference. So, are Treasury bills exempt from state taxes? Yes. Interest from U.S. Treasury bills is generally exempt from state and local income taxes. Federal income tax still applies, though, so T-bills should not be described as completely tax-free.

That state-tax exemption becomes especially relevant when you compare Treasury bills with taxable alternatives such as bank savings accounts, certificates of deposit, or bank money market accounts. The advertised rate is only part of the comparison. The tax treatment can change the amount of income left after taxes.

If you want the bigger picture first, our
Treasury Bills Explained
guide covers how these short-term U.S. government securities work. Here, the focus is narrower: the state and local income-tax exemption and how it affects Treasury bill investors.

What You’ll Learn

Why Treasury bill interest is exempt from state and local income taxes.
How federal income tax applies to Treasury bill interest.
Why the exemption can matter when comparing after-tax returns.
How T-bills compare with CDs, savings accounts, and bank money market accounts.
How Form 1099-INT is used for Treasury interest reporting.
Common tax-reporting mistakes investors should watch for.

Quick Answer: Are Treasury Bills Exempt From State Taxes?

Yes. Interest from U.S. Treasury bills is subject to federal income tax but is exempt from state and local income taxes. Treasury bill interest is generally reported on Form 1099-INT, Box 3. That means the state-tax benefit is real, but Treasury bill income is not completely tax-free.

Key Takeaways

Treasury bill interest is exempt from state and local income taxes.
Federal income tax still applies to Treasury bill interest.
The exemption can matter when comparing T-bills with taxable bank deposits.
Form 1099-INT generally reports Treasury bill interest in Box 3.
For a standard T-bill held to maturity, the difference between the discounted purchase price and the face value is generally treated as interest income.
State-tax exempt does not mean federal-tax exempt.

BOTTOM LINE:
The main tax advantage of Treasury bills is the exemption from state and local income taxes. When comparing a T-bill with another cash investment, look beyond the advertised rate and consider how each investment is taxed.

Treasury Bills and State Taxes at a Glance

The central tax rule is simple: interest income from U.S. Treasury bills is subject to federal income tax but exempt from all state and local income taxes. That can make the tax treatment different from interest earned on many bank deposits. Treasury interest is generally identified separately on Form 1099-INT.

Tax Detail	Treasury Bill Treatment
Federal income tax	Applies
State income tax	Exempt
Local income tax	Exempt
Form 1099-INT	Treasury interest generally appears in Box 3
Key tax benefit	Exemption from state and local income taxes

WHO MAY VALUE THIS TAX TREATMENT:
Investors comparing Treasury bills with taxable cash investments may want to account for the state and local income-tax exemption when comparing after-tax income. The actual benefit depends on the investor’s tax situation and location.

KEY NUMBERS:
Treasury bills generally have 4-, 8-, 13-, 26-, or 52-week maturities. They are generally issued at a discount, and for a standard bill held to maturity, the difference between the discounted purchase price and face value is generally treated as interest income.

Treasury Bill State Tax Exemption: A Complete Beginner Guide

Are Treasury Bills Exempt From State Taxes? Treasury bills have a tax feature that can be easy to miss when you first compare them with other short-term investments. The IRS says interest from Treasury bills, notes, and bonds is subject to federal income tax but exempt from all state and local income taxes.

1. What Does the State-Tax Exemption Mean?

Imagine buying a standard Treasury bill for $9,800 and receiving its $10,000 face value at maturity. The $200 difference is generally treated as interest income. That interest is taxable federally, but it is exempt from state and local income taxes.

2. Why Doesn’t the Exemption Apply to Federal Tax?

Treasury bills are obligations of the U.S. government, but their interest is not federally tax-exempt. For a standard Treasury bill held to maturity, the IRS generally treats the difference between the discounted purchase price and the face value received at maturity as interest income.

3. Does the Exemption Include Local Income Taxes?

Yes. The exemption covers both state and local income taxes. That means Treasury bill interest is generally not included in state or local income tax based on the interest itself. This treatment can differ from taxable interest earned through many bank deposit products.

4. Where Does Treasury Interest Appear on Form 1099-INT?

Treasury bill interest is generally reported on Form 1099-INT, Box 3. IRS instructions specifically say Box 3 is used for interest on U.S. savings bonds, Treasury bills, Treasury notes, and Treasury bonds. The amount is generally included with taxable interest for federal reporting.

EASY WAY TO REMEMBER:
Treasury bill interest gets a state and local income-tax exemption, not a complete tax exemption. Federal income tax still applies, and Treasury interest is generally identified in Box 3 of Form 1099-INT.

That difference matters most when you compare the after-tax income from a Treasury bill with interest from a taxable bank account or another short-term investment.

How the State-Tax Exemption Works

The state-tax benefit follows the federal treatment of U.S. Treasury obligations. Treasury bill interest is taxable for federal income tax purposes, while that interest is exempt from state and local income taxes.

Step 1: You Buy the Treasury Bill

Treasury bills are generally issued at a discount. For example, a $10,000 face-value bill might be purchased for less than $10,000. The actual purchase price depends on the bill and the transaction terms.

Step 2: The Bill Reaches Maturity

For a standard Treasury bill held to maturity, the difference between the discounted purchase price and the face value received at maturity is generally treated as interest income. Most individual taxpayers using the cash method generally report this interest when the bill is paid at maturity.

Step 3: The State and Local Exemption Applies

Once the Treasury interest is recognized for tax purposes, the key distinction is where it is taxed. Federal income tax applies, but the interest from Treasury bills is exempt from state and local income taxes. That is the tax advantage behind the phrase state-tax exempt.

Step 4: Treasury Interest Is Reported Separately

Form 1099-INT, when issued for Treasury obligations, reports Treasury bill interest in Box 3. IRS instructions specifically say Treasury bills, Treasury notes, Treasury bonds, and U.S. savings bonds belong in Box 3 rather than Box 1.

THE SIMPLE VERSION:
A Treasury bill can create federally taxable interest without creating state or local income tax on that same Treasury interest. The exemption is the tax advantage; it does not make the investment completely tax-free.

Benefits & Drawbacks of the State-Tax Exemption

The state-tax exemption can change the after-tax comparison between Treasury bills and taxable cash investments. Still, it is only one factor. Federal income tax continues to apply, while the value of the state and local exemption depends on the investor’s tax situation and where the investor lives.

✓ Benefits

Treasury bill interest is exempt from state and local income taxes.
The exemption can improve the after-tax comparison with taxable bank deposits for investors who would otherwise owe state or local income tax on comparable interest.
Treasury obligations are generally reported separately on Form 1099-INT, with applicable Treasury interest reported in Box 3.

△ Drawbacks

Federal income tax still applies to Treasury bill interest.
The state-tax exemption does not by itself determine which investment produces the better after-tax result; yield, federal taxes, and the tax treatment of the alternative also matter.
Selling a Treasury bill before maturity or dealing with certain secondary-market transactions can introduce additional tax

QUICK TAKE:

The tax benefit is specific: state and local income taxes generally do not apply to Treasury bill interest. When comparing investments, look at the yield and federal tax treatment alongside your own state and local tax position.

Treasury Bills vs. CDs vs. Savings vs. Money Market

The tax difference becomes clearer when Treasury bills are placed beside familiar cash investments. Treasury interest receives a specific federal benefit: it remains subject to federal income tax but is exempt from state and local income taxes. Interest from ordinary bank deposit products is generally taxable, subject to the rules that apply to the account and the investor.

Investment	Federal Tax	State & Local Income Tax	Common Federal Reporting
Treasury Bills	Applies	Exempt	Form 1099-INT, generally Box 3
Bank CD	Generally applies	Generally taxable under applicable rules	Generally Form 1099-INT
Bank Savings Account	Generally applies	Generally taxable under applicable rules	Generally Form 1099-INT
Bank Money Market Account	Generally applies	Generally taxable under applicable rules	Generally Form 1099-INT

Why the Tax Difference Matters

Imagine two investments producing the same amount of interest. If one is a Treasury bill and the other is a taxable bank deposit, the Treasury interest can avoid state and local income tax while the bank interest generally remains subject to applicable state and local rules. The actual difference depends on the investor’s circumstances and jurisdiction.

One detail is easy to overlook: a bank money market account is not the same thing as a money market fund. A bank money market account is a deposit account that generally pays interest. A money market fund is an investment product, and its distributions are generally reported as dividends rather than interest.

QUICK TAKE:
Treasury bills have a specific tax advantage: their interest is exempt from state and local income taxes. When comparing T-bills with CDs, savings accounts, or bank money market accounts, compare the tax treatment along with the yield.

Costs, Tax Risks & Expert Tips

Treasury bills are generally purchased at a discount and do not make regular interest payments during their short term. The main tax issue is straightforward: Treasury bill interest is subject to federal income tax but exempt from state and local income taxes. The purchase price, maturity date, and how the bill was held can also affect how the income is reported.

Costs to Check Before Buying

If you buy through a brokerage account, check the broker’s current pricing and account terms rather than assuming every transaction is free.
Compare the Treasury bill’s yield with the yield available on other cash investments after considering the applicable tax treatment.
Keep purchase confirmations and maturity records, especially when buying or selling Treasury bills through different accounts.

Tax Risks to Avoid

Do not describe Treasury bills as completely tax-free. Federal income tax still applies to the interest.
Do not ignore taxable interest simply because a tax form was not received. The IRS requires taxable interest to be reported even when a Form 1099-INT is not received.
Do not automatically enter Treasury bill interest in Form 1099-INT Box 1. Interest from Treasury bills, notes, and bonds is generally shown in Box 3.

Expert Tips for Cleaner Tax Records

For a standard Treasury bill held to maturity, the difference between the discounted purchase price and the face value received at maturity is generally treated as interest income. For cash-method taxpayers, that income is generally reported when the bill is paid at maturity.

EXPERT TIP:
Keep your purchase confirmation, maturity statement, and tax forms together. TreasuryDirect reports Treasury bill interest for the year the bill matures or is sold, and a Treasury bill held through a broker can result in additional reporting records if the security moves between accounts.

Common Mistakes + Real-Life Example

Treasury bill taxes are usually straightforward, but a few common misunderstandings can create problems. The biggest one is confusing a state-tax exemption with a complete tax exemption. Treasury bill interest remains subject to federal income tax.

Mistake 1: Assuming T-Bills Are Completely Tax-Free

The exemption applies to state and local income taxes. It does not remove federal income tax from Treasury bill interest.

Mistake 2: Ignoring the Tax Form

For Treasury bills, Treasury notes, and Treasury bonds, Treasury interest is generally shown in Form 1099-INT, Box 3. Taxable interest must still be reported even when a 1099-INT is not received.

Mistake 3: Overlooking the Sale or Maturity Year

A Treasury bill does not normally pay periodic interest. For a standard bill held to maturity, the difference between the discounted purchase price and the amount received at maturity is generally interest income, normally reported when the bill matures. If the bill is sold before maturity, keep the transaction records because the reporting can involve additional details.

Real-Life Example

Consider this illustrative example: an investor buys a Treasury bill for $9,800 and receives $10,000 at maturity. The $200 difference represents interest income for this simplified example. Federal income tax applies to that interest, while the interest is exempt from state and local income taxes. The investor should use the actual tax documents and transaction records when preparing the tax return.

KEY LESSON:
Treasury bills are not completely tax-free. Their specific tax benefit is that Treasury interest is exempt from state and local income taxes while remaining subject to federal income tax.

Who May Consider Treasury Bills?

Treasury bills may be worth considering for investors looking for a short-term U.S. Treasury security with a defined maturity date. Their interest is subject to federal income tax but exempt from state and local income taxes, which can matter when comparing T-bills with taxable alternatives.

T-Bills May Fit Investors Who:

Want a short-term U.S. Treasury security with a stated maturity of one year or less.
Live in a state or locality with an income tax and want to account for the Treasury interest exemption when comparing taxable investments.
Prefer a security that is generally purchased at a discount and redeemed at its face value at maturity.
Understand that the interest remains subject to federal income tax.

KEEP IN MIND:
The state-tax exemption is only one factor to consider. Maturity period, yield, liquidity needs, federal tax treatment, and the tax treatment of alternative investments can also affect the comparison.

Frequently Asked Questions

1. Are Treasury bills exempt from state taxes?

Yes. Interest income from U.S. Treasury bills is subject to federal income tax but is exempt from state and local income taxes.

2. Do you pay federal tax on Treasury bills?

Yes. Treasury bill interest is subject to federal income tax. For a standard Treasury bill held to maturity, the difference between the discounted purchase price and the face value received at maturity is generally treated as interest income.

3. Are Treasury bills exempt from local income taxes?

Yes. The exemption covers state and local income taxes on Treasury bill interest. Federal income tax still applies, so Treasury bills should not be described as completely tax-free.

4. Where is Treasury bill interest reported on Form 1099-INT?

Interest from Treasury bills is generally reported in Box 3 of Form 1099-INT. IRS instructions specifically identify Box 3 for interest on Treasury bills, Treasury notes, Treasury bonds, and U.S. savings bonds.

5. When do you report Treasury bill interest?

For a standard Treasury bill held to maturity, the interest is generally reported when the bill is paid at maturity. TreasuryDirect also notes that T-bill interest is reportable in the year the bill matures or is sold.

6. What if you do not receive a Form 1099-INT?

Not receiving a Form 1099-INT does not automatically make taxable interest nonreportable. The IRS states that taxable interest must be reported even when the form is not received.

7. Are Treasury bills tax-free if you live in a state with income tax?

Treasury bill interest is exempt from state and local income taxes, even when the investor lives in a state that imposes an income tax. Federal income tax still applies to the interest.

8. Does Treasury bill tax reporting change if you sell before maturity?

It can. A standard Treasury bill held to maturity has a straightforward discount-to-face-value interest treatment, while a bill sold before maturity can involve different transaction details and reporting. TreasuryDirect states that the difference between the original purchase price and the amount received when a bill is sold or matures is interest.

Final Verdict: Are Treasury Bills Exempt From State Taxes?

Yes. Interest from U.S. Treasury bills is exempt from state and local income taxes, while federal income tax still applies. That makes the state and local tax exemption the key tax distinction to understand when evaluating Treasury bills. They are not completely tax-free investments. (IRS Publication 550)

For a standard Treasury bill held to maturity, the difference between the discounted purchase price and the face value received at maturity is generally treated as interest income. Treasury bill interest is generally reported in Box 3 of Form 1099-INT. (IRS Form 1099-INT Instructions)

For a broader explanation of T-bill maturities, pricing, and basic investing concepts, continue with our Treasury Bills Explained guide.

BOTTOM LINE:
Treasury bill interest gets a state and local income-tax exemption, but federal income tax still applies. When comparing T-bills with other cash investments, consider the yield together with the applicable federal, state, and local tax treatment.

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Treasury Bills Explained

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Treasury Bill Price vs. Face Value

September 22, 2026

How Treasury Bill Interest Is Taxed in 2026: Federal, State & Local Tax Rules Explained

How Treasury Bill Interest Is Taxed

Subhash Rukade

Founder, FinanceInvestment

Published:

September 23, 2026

•

Updated:

September 23, 2026

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Reading Time:

10–12 min

How Treasury Bill Interest Is Taxed

How Treasury Bill Interest Is Taxed in 2026 Federal and State Tax Rules Explained Treasury bills can look simple from an investment standpoint. You generally buy a bill for less than its face value, hold it until maturity, and receive the full face value. The difference between what you paid and what you receive is generally treated as interest income for federal tax purposes. Unlike a bond that pays regular coupons, a Treasury bill normally does not send you periodic interest payments.

The tax treatment has an important advantage for many U.S. investors. Interest from Treasury bills is subject to federal income tax, but it is exempt from state and local income taxes. For a standard Treasury bill, the IRS says the interest is generally reported in Box 3 of Form 1099-INT.

If you are new to Treasury bills, our

Treasury Bills Explained

guide covers how T-bills work from purchase through maturity. This article focuses specifically on the tax side: when Treasury bill interest is generally reported, how the 1099-INT information is used, why state tax treatment is different, and which mistakes can create problems at tax time.

What You’ll Learn

How federal income tax applies to Treasury bill interest.
Why Treasury bill interest is generally exempt from state and local income taxes.
How Treasury bill interest is reported in Box 3 of Form 1099-INT.
When Treasury bill interest is generally included in taxable income.
How Treasury bill tax treatment compares with CDs and other interest-bearing investments.
Common Treasury bill tax-reporting mistakes and practical ways to avoid them.

Quick Answer: How Treasury Bill Interest Is Taxed

Treasury bill interest is subject to federal income tax, but it is exempt from all state and local income taxes. For a Treasury bill held to maturity, the difference between the discounted purchase price and the face value received at maturity is generally treated as interest income. The IRS says this interest is generally reported in Box 3 of Form 1099-INT for the year the bill is paid at maturity.

Key Takeaways

Federal tax applies: Treasury bill interest is taxable as federal income.
State and local exemption: Treasury bill interest is exempt from state and local income taxes.
Box 3 reporting: Interest from Treasury bills is generally reported in Box 3 of Form 1099-INT.
Maturity-year reporting: For a Treasury bill held to maturity, the IRS generally treats the interest as income when the bill is paid at maturity.
No regular coupon: T-bills generally earn their return through the difference between the discounted purchase price and the face value received at maturity.
1099-INT is not the tax itself: You must report taxable interest even if you do not receive a Form 1099-INT.

Bottom line: Treasury bills are not federally tax-free. Their key tax benefit is that the interest is generally exempt from state and local income taxes, while federal income tax still applies.

Treasury Bill Taxes at a Glance

Treasury bill tax rules are easier to follow when you separate federal tax from state and local tax. For a standard T-bill held to maturity, the discount between the purchase price and the face value received at maturity is generally treated as interest income. The IRS says Treasury bill interest is subject to federal income tax but exempt from state and local income taxes.

Tax Point	What It Means
Federal income tax	Applies to Treasury bill interest.
State and local income tax	Treasury bill interest is generally exempt.
Form 1099-INT	Treasury bill interest is generally reported in Box 3.
Held to maturity	For a standard T-bill, interest is generally reported when the bill is paid at maturity.

QUICK TAKE:

Treasury bills are subject to federal income tax, but their interest is exempt from state and local income taxes. For a standard T-bill held to maturity, the purchase-price discount becomes interest income when the bill is paid at maturity.

Treasury Bill Taxes: A Complete Beginner Guide

How Treasury Bill Interest Is Taxed Treasury bills work differently from investments that send regular interest payments. A T-bill is generally purchased at a discount to its face value and pays the full face value when it matures. For example, if an investor pays $9,800 for a $10,000 Treasury bill and holds it to maturity, the $200 difference represents interest income. The IRS treats that interest as taxable for federal income tax purposes. Treasury bill interest is generally exempt from state and local income taxes.

1. Federal Income Tax Applies

The return you earn from a Treasury bill is generally included in federal taxable income. The fact that the return comes from the difference between the purchase price and face value does not make it federally tax-free. For a standard T-bill held to maturity, the IRS generally treats that difference as interest income.

2. State and Local Income Taxes Are Different

Treasury securities have a notable state-tax advantage. Interest from Treasury bills, notes, and bonds is subject to federal income tax but exempt from state and local income taxes. That difference can matter when comparing a T-bill with an investment whose interest is taxable at federal, state, and local levels.

3. The Tax Year Depends on What Happens to the Bill

If you hold a Treasury bill until maturity, the IRS generally says to report the interest when the bill is paid at maturity. If you buy a bill in one calendar year and it matures in the next, the interest is generally reported in the maturity year. If you sell the bill before maturity, the reporting can depend on the sale and the circumstances of the transaction.

4. Form 1099-INT Helps With Reporting

For Treasury bills, the interest is generally reported in Box 3 of Form 1099-INT. The form can help you identify the amount to include on your federal return. However, you are still responsible for reporting taxable interest even if you do not receive a Form 1099-INT.

How Treasury Bill Taxation Works

The tax treatment of a Treasury bill is easier to follow when you look at what happens from purchase to maturity. A standard T-bill is generally issued at a discount rather than with regular coupon payments. If you hold it until maturity, the difference between the discounted purchase price and the face value you receive is generally treated as interest income for federal tax purposes.

Step 1: You Buy the T-Bill at a Discount

Suppose, purely as an example, you pay $9,800 for a $10,000 Treasury bill and hold it to maturity. The $200 difference is generally treated as interest income. Your actual purchase price can be different because Treasury bills are priced through auctions or, when purchased in the secondary market, at the market price available at that time.

Step 2: The Bill Reaches Maturity

For a Treasury bill that you hold to maturity, the IRS generally says to report the interest income when the bill is paid at maturity. This means a bill purchased near the end of one calendar year but maturing in the following year will generally have its maturity interest reported in the later tax year.

Step 3: Federal Tax Applies, but State and Local Tax Does Not

Treasury bill interest is subject to federal income tax. At the same time, interest from U.S. Treasury bills, notes, and bonds is exempt from state and local income taxes. This distinction can affect the after-tax comparison between a T-bill and other interest-producing investments.

Step 4: Form 1099-INT Shows the Treasury Interest

Treasury bill interest is generally reported on Form 1099-INT, Box 3. That amount is included with your taxable interest income for federal tax reporting. You still have a responsibility to report taxable interest even if you do not receive a Form 1099-INT.

Benefits & Drawbacks of Treasury Bill Tax Treatment

Treasury bills are not free from federal tax, but their tax treatment has an important advantage. The interest is subject to federal income tax while remaining exempt from state and local income taxes. That distinction can be meaningful when comparing T-bills with other taxable interest investments.

Pros

State and local tax exemption: Interest from Treasury bills is exempt from state and local income taxes.
Clear federal reporting: Treasury bill interest is generally reported in Box 3 of Form 1099-INT.
Potential after-tax benefit: Investors who would otherwise owe state or local income tax on interest can compare the T-bill’s tax-exempt state and local treatment when evaluating alternatives.

Cons

Federal income tax still applies: The interest is not exempt from federal income tax.
Tax reporting is still required: Taxable Treasury interest must be reported even if you do not receive Form 1099-INT.
Early sale can require different tax treatment: If you sell a Treasury bill before maturity, the tax reporting can differ from the straightforward maturity treatment of a bill held until maturity.

QUICK TAKE:

The main tax benefit of a Treasury bill is its state and local income-tax exemption, not an exemption from federal tax. For a bill held to maturity, the federal tax reporting is generally straightforward; transactions involving a sale before maturity may require additional tax calculations.

Treasury Bills vs. Other Investments: Tax Comparison

The tax difference becomes clearer when a Treasury bill is compared with common bank savings products. Treasury bill interest is subject to federal income tax but exempt from state and local income taxes. By contrast, interest from ordinary bank accounts and CDs is generally taxable interest.

Investment	Federal Tax	State & Local Tax	Typical 1099 Reporting
Treasury Bills	Taxable	Exempt	Form 1099-INT, Box 3
Bank Savings Account	Taxable	Generally taxable	Form 1099-INT, generally Box 1
Certificate of Deposit (CD)	Generally taxable	Generally taxable	Form 1099-INT, generally Box 1
Bank Money Market Account	Generally taxable	Generally taxable	Generally Form 1099-INT

This comparison is about general tax treatment, not the total return or risk of each investment. A money market fund is different from a bank money market account and may report distributions as dividends rather than interest, so investors should not treat the two products as interchangeable for tax-reporting purposes.

QUICK TAKE:

The key Treasury bill tax advantage is the state and local income-tax exemption. Federal tax still applies. When comparing investments, look at the after-tax return rather than comparing advertised interest rates alone.

Costs, Risks & Expert Tips for Treasury Bill Taxes

Treasury bill tax costs mainly come from federal income tax and the need to report the interest correctly. The interest is exempt from state and local income taxes, but that exemption does not remove the federal tax obligation. The bigger practical risks are missing taxable interest, using the wrong tax year, or overlooking information on your tax forms.

Tax Costs to Keep in Mind

Federal income tax: Treasury bill interest is subject to federal income tax.
State and local exemption: Treasury bill interest is exempt from state and local income taxes.
Voluntary withholding: TreasuryDirect allows investors to request withholding from certain Treasury security interest payments. Any federal tax withheld is reported on Form 1099-INT and can be credited toward the investor’s federal tax liability.

Expert Tips for Cleaner Tax Reporting

Keep your purchase records: Save transaction confirmations, purchase prices, maturity dates, and account statements so you can reconcile your tax documents.
Check Box 3: Interest from Treasury bills is generally reported in Box 3 of Form 1099-INT rather than ordinary bank interest in Box.
Check the tax year: For a Treasury bill held to maturity, the IRS generally says to report the interest when the bill is paid at maturity.
Do not ignore missing forms: Taxable interest must still be reported even when you do not receive Form 1099-INT.

EXPERT TIP:

Do not compare Treasury bill rates with other investments using the headline rate alone. If you live in a state or locality with an income tax, the Treasury bill’s state and local tax exemption can affect your after-tax return.

Common Treasury Bill Tax Mistakes + Real-Life Example

Treasury bill tax mistakes often happen when investors confuse federal taxation with the state and local exemption, or assume the purchase date is automatically the tax-reporting date. A few simple checks can make the reporting process much easier.

Common Mistakes to Avoid

Calling T-bill interest tax-free: Treasury bill interest is subject to federal income tax. The state and local income-tax exemption does not make the interest federally tax-free.
Using the purchase year automatically: For a Treasury bill held to maturity, the IRS generally says to report the interest when the bill is paid at maturity.
Looking in the wrong 1099 box: Treasury bill interest is generally reported in Box 3 of Form 1099-INT, not Box 1, which generally contains other taxable interest.
Ignoring missing tax forms: Taxable interest still must be reported even if you do not receive Form 1099-INT.
Assuming every purchase follows the same calculation: A T-bill held to maturity is relatively straightforward, but buying or selling a bill in the secondary market can involve additional tax considerations.

Real-Life Example: A $10,000 Treasury Bill

Illustrative example: Suppose an investor buys a $10,000 face-value Treasury bill for $9,800 and holds it until maturity. The investor receives $10,000 when the bill matures, creating a $200 difference between the purchase price and the maturity value.

For this simplified example, the $200 difference is generally treated as interest income. It is subject to federal income tax but exempt from state and local income taxes. For a Treasury bill held to maturity, the interest is generally reported for the year in which the bill is paid at maturity, and the amount is generally shown in Box 3 of Form 1099-INT.

QUICK TAKE:

Keep your Treasury transaction confirmation, maturity information, and Form 1099-INT together. If the bill was purchased or sold outside a straightforward maturity transaction, keep the purchase and sale records as well because additional tax rules may apply.

Who Should Consider Treasury Bills?

Treasury bills may be relevant for investors who are looking at short-term U.S. Treasury securities and want to understand how the tax treatment affects their results. The main tax feature is straightforward: Treasury bill interest is subject to federal income tax but exempt from state and local income taxes.

The Tax Treatment May Matter Most To:

Investors subject to state or local income tax: The Treasury exemption can be relevant when comparing the after-tax income from different investments.
Investors focused on short-term holdings: Treasury bills generally mature within one year, with common terms including 4, 8, 13, 26, and 52 weeks.
Investors who want clear tax records: Treasury bill interest is generally reported on Form 1099-INT in Box 3.
Investors comparing taxable alternatives: The state and local tax exemption can be one factor when comparing T-bills with bank interest or other taxable income.

When Should You Get Extra Tax Guidance?

Extra care may be appropriate if you buy or sell Treasury bills in the secondary market, purchase a bill at a premium, or have tax circumstances that require special treatment. The IRS has separate rules for discounted debt instruments and dispositions, so a straightforward maturity example should not be applied automatically to every T-bill transaction.

Frequently Asked Questions About Treasury Bill Taxes

1. Do you pay federal tax on Treasury bills?

Yes. Interest income from Treasury bills is subject to federal income tax. Treasury bills are not federally tax-free investments.

2. Are Treasury bills exempt from state income tax?

Yes. Interest from U.S. Treasury bills is exempt from state and local income taxes. The federal income tax still applies.

3. Where is Treasury bill interest reported on Form 1099-INT?

Treasury bill interest is generally reported in Box 3 of Form 1099-INT. IRS instructions specifically include Treasury bills among the U.S. Treasury obligations reported in Box 3.

4. When do you report Treasury bill interest?

For a Treasury bill held to maturity, the IRS generally says to report the interest when the bill is paid at maturity. If the bill is purchased in one calendar year and matures in the next, the interest is generally reported in the maturity year.

5. Do Treasury bills pay interest every month?

No. Treasury bills generally do not make periodic coupon payments. They are generally issued at a discount, and the difference between the discounted purchase price and the face value received at maturity is interest income.

6. What if I do not receive a Form 1099-INT for my Treasury bill?

You still must report taxable interest income. The IRS says taxable interest must be reported even when Form 1099-INT is not received. Keep your Treasury transaction records and contact the payer if an expected form is missing.

7. Is Treasury bill interest tax-free if I live in a state with income tax?

No. Treasury bill interest is exempt from state and local income taxes, but it remains subject to federal income tax.

8. Is Treasury bill tax treatment the same if I sell before maturity?

Not necessarily. The simple maturity rule discussed in this article applies to a Treasury bill held until maturity. Selling before maturity can involve additional tax rules, so the straightforward maturity calculation should not automatically be applied to an early sale.

Final Verdict: How Treasury Bill Interest Is Taxed

Treasury bill tax treatment becomes easier to understand when you separate federal taxation from the state and local exemption. Interest from Treasury bills is subject to federal income tax, but the interest is exempt from state and local income taxes. For a standard T-bill held to maturity, the difference between the discounted purchase price and the face value received at maturity is generally treated as interest income.

For tax reporting, Form 1099-INT generally shows Treasury bill interest in Box 3. If a bill matures in a different tax year from the purchase year, the interest is generally reported when the bill is paid at maturity. This reporting requirement also applies if you reinvest the maturity proceeds into another Treasury security.

BOTTOM LINE:
Treasury bill interest is not completely tax-free. Federal income tax applies, while the interest is exempt from state and local income taxes. Keep your purchase, maturity, and tax forms together, and pay extra attention to the tax year when a T-bill crosses calendar years or is sold before maturity.

Have a Money Question? Keep Exploring.

Money and tax questions often become easier when you have the right information in front of you. Keep your investment records organized, review the applicable tax guidance, and explore related Treasury bill topics before making financial decisions.

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September 22, 2026

Treasury Bill Auction Dates Explained: 2026 Schedule Guide

Treasury Bill Auction Dates Explained

Subhash Rukade

Founder, FinanceInvestment

Published: September 21, 2026

Updated: September 21, 2026

Reading Time: ~13 min

When Are Treasury Bills Auctioned?

Knowing Treasury Bill Auction Dates Explained can make the buying process much easier. If you are planning to purchase a T-bill, you may see three different dates: the announcement date, the auction date, and the issue date. Each one has a different purpose, so confusing them can lead to missed deadlines or poor planning.

Treasury bills follow recurring auction patterns based on their maturity terms, but the exact dates can change because of holidays, Treasury funding needs, or other scheduling changes. That is why the current official Treasury schedule should always be checked before placing an order.

If you are new to T-bills, you can first review our

Treasury Bills Explained guide

for the basics. This article then takes the next step by focusing specifically on the auction calendar and the dates you need to watch.

What You’ll Learn

How the Treasury bill auction calendar is organized
What announcement, auction, and issue dates mean
How 4-, 8-, 13-, 17-, 26-, and 52-week bills fit into the schedule
How to find the latest official Treasury auction dates
How to plan a T-bill purchase without relying on an outdated calendar

Quick Answer: When Are Treasury Bills Auctioned?

Regular Treasury bills follow recurring auction patterns. The 4-, 6-, 8-, 13-, 17-, and 26-week bills are generally offered weekly, while the 52-week bill is generally offered every four weeks. The exact date for a particular offering should be confirmed through the current Treasury schedule and offering announcement before you place an order.

Key Takeaways

The announcement date is when Treasury publishes the offering details for a specific bill.
The auction date is when Treasury conducts the auction and determines the price and applicable auction rate.
The issue date is when the newly auctioned Treasury bill is issued and settlement occurs.
Regular auction patterns help with planning, but holidays and other Treasury scheduling changes can shift individual dates.
For an actual purchase, check the current official Treasury offering information instead of relying only on a general calendar.

Treasury Bill Auction Dates at a Glance

Treasury bills follow recurring auction patterns based on their maturity terms. That makes the general calendar useful for planning, but it should not be treated as a list of guaranteed dates. The specific offering announcement is the better source when you are preparing to buy a particular T-bill.

Bill Term	Typical Frequency	Usual Auction Day
4-week	Weekly	Thursday
6-week	Weekly	Tuesday
8-week	Weekly	Thursday
13-week	Weekly	Monday
17-week	Weekly	Wednesday
26-week	Weekly	Monday
52-week	Every 4 weeks	Tuesday

QUICK TAKE: The days shown above are the Treasury’s usual auction pattern for regular bills. They are not a substitute for the current offering announcement. Holidays and other special circumstances can change the timing, so check TreasuryDirect for the specific auction you plan to purchase.

Treasury Bill Auction Dates: A Beginner’s Guide

Treasury Bill Auction Dates Explained For a first-time buyer, a Treasury bill auction calendar can seem confusing because several dates appear for the same offering. The easiest way to read it is to separate the process into three stages: the announcement, the auction, and the issue. Each date marks a different step.

1. Identify the Bill Term

Regular Treasury bills currently include 4-, 6-, 8-, 13-, 17-, 26-, and 52-week terms. The 4-, 6-, 8-, 13-, 17-, and 26-week bills generally follow weekly auction patterns, while the 52-week bill generally follows a four-week cycle.

2. Check the Specific Offering

Once you know the bill term you want, find the specific offering on TreasuryDirect. The official offering announcement provides the dates and terms for that particular auction. This matters because a general recurring schedule can change for holidays or other special circumstances.

3. Plan Around the Auction

If you are buying through TreasuryDirect, review the purchase instructions and deadline shown for the offering. If you are using a brokerage, check that firm’s order deadline because it may differ from Treasury’s schedule. Give yourself enough time to complete the order before the applicable cutoff.

BEGINNER TIP: Treat the recurring calendar as a planning tool, not as a guaranteed list of dates. Before placing an order, verify the specific offering, auction date, issue date, and applicable purchase deadline.

How Treasury Bill Auction Dates Work

A Treasury bill auction follows a sequence that starts with an offering announcement and ends with the bill’s issue and settlement. The recurring calendar helps you anticipate an auction, while the specific offering announcement provides the dates and terms for that particular bill.

Step 1: Treasury Announces the Offering

Treasury first publishes an official offering announcement. It identifies the security and provides details such as the auction date, issue date, maturity date, offering amount, and bidding information. When you need the exact details for an upcoming T-bill, this specific announcement is more useful than a general calendar pattern.

Step 2: Investors Submit Bids

Treasury auctions can include both noncompetitive and competitive bids. A noncompetitive bidder agrees to accept the auction result and, under the applicable rules, receives the amount requested if the bid qualifies. A competitive bidder specifies the discount rate they are willing to accept. Depending on the auction result, a competitive bid can be accepted in full, accepted in part, or rejected.

Step 3: Treasury Conducts the Auction

Treasury evaluates competitive bids according to the rates submitted and accepts bids until the offering is filled under the auction rules. Treasury bills are sold through a single-price auction, meaning successful competitive and noncompetitive bidders receive the same purchase price for that offering.

Step 4: The Bill Is Issued and Settled

On the issue date, the newly auctioned bill is issued and the transaction is settled. The security then appears in the investor’s TreasuryDirect or brokerage account, depending on where it was purchased. An investor who later wants to sell before maturity must use the applicable secondary market rather than the original auction.

EXPERT TIP: Use the recurring auction schedule for planning, but use the specific offering announcement as your final reference. That is where you confirm the dates and terms for the T-bill you intend to purchase.

Benefits and Drawbacks of Following the Treasury Bill Auction Calendar

A Treasury bill auction calendar can make short-term investing easier to organize. It gives you a framework for planning potential purchases and maturity dates. Still, a schedule is only a planning tool and does not determine the final terms of an individual auction.

Potential Benefits

Helps you anticipate when regular T-bill offerings may be auctioned.
Makes it easier to coordinate purchases with expected cash needs.
Can help with planning a short-term Treasury ladder.
Gives you a starting point for researching a specific upcoming offering.

Potential Drawbacks

A recurring schedule does not guarantee the exact date of every offering.
Holidays and other Treasury scheduling changes can affect the timing.
The calendar cannot tell you the final auction rate or purchase price in advance.
Selling before maturity means using the secondary market, where the price can differ from your original purchase price.

WHAT TO REMEMBER: Use the auction calendar to plan ahead, but use the individual Treasury offering announcement to confirm the dates and terms for a specific T-bill. The schedule helps you prepare; it does not replace the official offering details.

Treasury Bill Auction Schedule Comparison

The table below compares the regular Treasury bill terms, their usual auction frequency, and the normal timing between auction and issue. These patterns are useful for planning, but an individual offering can follow a different date because of holidays or other Treasury scheduling changes.

Bill Term	Usual Frequency	Usual Auction Day	Usual Issue Timing
4-week	Weekly	Thursday	Following Tuesday
6-week	Weekly	Tuesday	Thursday
8-week	Weekly	Thursday	Following Tuesday
13-week	Weekly	Monday	Thursday after auction
17-week	Weekly	Wednesday	Following Tuesday
26-week	Weekly	Monday	Thursday after auction
52-week	Every 4 weeks	Tuesday	Thursday

HOW TO USE THIS TABLE: Choose the bill term that fits your time horizon, then use its usual auction pattern as a planning reference. Before placing an order, confirm the exact auction and issue dates in the current Treasury offering announcement.

Costs, Risks & Expert Tips for Treasury Bill Auctions

Knowing the auction date is only one part of planning a T-bill purchase. You should also check the purchase method, applicable costs, tax treatment, and what could happen if you need your money before maturity.

Costs and Taxes to Check

TreasuryDirect does not charge a purchase commission for Treasury marketable securities. A brokerage may have its own fees, commissions, or transaction rules.
Treasury bill income is generally subject to federal income tax but is exempt from state and local income taxes.
If you sell before maturity, your brokerage’s applicable transaction costs and the secondary-market price can affect the amount you receive.

Timing and Market Risks

The recurring auction schedule should be treated as a planning guide, not a guarantee of every individual date. Treasury can change auction timing because of holidays or other special circumstances. Also, buying at auction does not mean you can later sell at the same price. A bill sold before maturity is subject to the secondary market, where prices can move.

EXPERT TIP: Before placing an order, verify the specific offering’s auction date, issue date, maturity date, and applicable purchase deadline. Then check your platform’s instructions. The recurring calendar helps you plan, but the individual offering should be your final reference.

Common Treasury Bill Auction Date Mistakes

Most auction-date mistakes happen when investors rely on a familiar calendar pattern without checking the specific offering. A few simple checks can make the process much easier to manage.

Mistakes to Avoid

Confusing the announcement and auction dates.
The announcement provides the offering details, while the auction is when Treasury conducts the sale.
Treating the usual weekday as a guaranteed date.
Regular patterns can change because of holidays or other Treasury scheduling circumstances.
Forgetting the issue date.
The bill’s issue and settlement occur after the auction according to the offering schedule.
Not checking the applicable purchase deadline.
TreasuryDirect and brokerage platforms can have different ordering instructions or cutoffs.

Real-Life Example: Planning a T-Bill Purchase

Suppose Maria wants to invest $10,000 in a 13-week Treasury bill. She starts by looking at the regular auction pattern, which gives her a general idea of when an offering may occur. She does not stop there. Maria checks the specific Treasury offering announcement before placing her order.

She verifies the auction date, issue date, maturity date, and applicable purchase instructions. If she is using a brokerage, she also checks that firm’s order deadline. Because she confirms the individual offering instead of relying only on the recurring calendar, Maria has a clearer timeline for her $10,000 purchase.

SMART HABIT: Use the calendar to plan ahead, then verify the individual offering before you buy. Check the auction date, issue date, maturity date, and applicable purchase instructions in that order.

Who Should Use the Treasury Bill Auction Calendar?

The Treasury bill auction calendar is most useful for investors who want to organize purchases around upcoming offerings. It can also help when you are matching new purchases with expected cash needs or planning when existing bills may mature.

Who May Find It Useful?

First-time T-bill buyers who want to understand when regular offerings are normally auctioned.
Short-term cash planners who want to coordinate a purchase with a future cash need.
Treasury ladder planners who are scheduling purchases across different bill maturities.
Existing Treasury investors who want a recurring reference for upcoming offerings.

KEEP IN MIND: The calendar is a planning reference, not a substitute for the official offering announcement. Before purchasing, check the specific auction date, issue date, maturity date, and applicable purchase instructions for the bill you are considering.

Frequently Asked Questions About Treasury Bill Auction Dates

1. How often are Treasury bills auctioned?

The 4-, 6-, 8-, 13-, 17-, and 26-week Treasury bills are generally offered weekly. The 52-week bill is generally offered every four weeks.

2. What is the difference between an announcement date and an auction date?

The announcement date is when Treasury publishes the offering details. The auction date is when Treasury conducts the auction and determines the auction results and applicable price.

3. What is the Treasury bill issue date?

The issue date is when the newly auctioned Treasury bill is issued and settlement takes place according to the offering terms. It is generally separate from the auction date.

4. Where can I find current Treasury bill auction dates?

TreasuryDirect’s current auction information and individual offering announcements are the best places to check upcoming dates. Use the general schedule for planning, then verify the specific offering before placing an order.

5. Are Treasury bill auction dates always the same?

No. Regular Treasury bills follow recurring patterns, but holidays and other Treasury scheduling circumstances can change the date of an individual offering.

6. Can I buy a Treasury bill on the auction date?

If you are buying through TreasuryDirect, you generally must submit a noncompetitive bid before the applicable auction deadline. A brokerage may set its own order cutoff, so check the broker’s instructions rather than assuming you can place an order at any time on auction day.

7. What happens after a Treasury bill auction?

Treasury publishes the auction results. For accepted purchases, the transaction then proceeds to the issue and settlement date listed for that offering. The bill can generally be held until maturity or sold earlier through the applicable secondary market.

8. Should I rely only on a Treasury bill auction calendar?

No. The calendar is useful for planning, but the specific offering announcement should be your final reference for the auction date, issue date, maturity date, and applicable purchase instructions.

Final Takeaway: How to Use Treasury Bill Auction Dates

Treasury bill auction dates become much easier to follow when you separate the three main stages of an offering. The recurring schedule helps you plan ahead, while the specific Treasury offering announcement gives you the dates and terms for the bill you actually want to purchase.

The announcement date is when Treasury publishes the offering details. The auction date is when Treasury conducts the auction. The issue date is when the newly auctioned bill is issued and settled.

Regular Treasury bills follow recurring auction patterns, but individual dates can change because of holidays or other scheduling circumstances. That makes the current offering announcement more important than relying on a calendar pattern alone.

THE SIMPLE RULE: Use the recurring calendar for planning, check the official offering announcement for confirmation, and follow your TreasuryDirect or brokerage purchase instructions before the applicable deadline.

Have a Money Question? Keep Exploring.

Want to learn more about Treasury bills, auction timing, or short-term investing? Continue exploring FinanceInvestment for practical guides designed to help you understand your options and plan with more confidence.

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Treasury Bills Explained

How to Buy Treasury Bills

September 21, 2026

How Treasury Bill Auctions Work: Complete 2026 Guide

How Treasury Bill Auctions Work

Subhash Rukade

Founder, FinanceInvestment

Published: September 21, 2026

Updated: September 21, 2026

Reading Time: ~13 min

How Treasury Bill Auctions Work A Treasury bill auction is the process the U.S. Treasury uses to sell newly issued T-bills to investors. Instead of setting one fixed price in advance, the Treasury accepts bids and uses the auction results to determine the terms at which the bills are issued. That is why understanding how Treasury bill auctions work matters when you are deciding when and how to buy.

The process has two main bidding methods: competitive and noncompetitive. Competitive bidders specify the rate they are willing to accept, while noncompetitive bidders agree to accept the auction result. The Treasury then processes the bids under its auction rules and announces the results, including the accepted rate and other important details.

What You’ll Learn

How the Treasury bill auction process moves from announcement to settlement
How competitive and noncompetitive bids work
How auction results determine the rate and issue price of newly issued T-bills
How to read Treasury bill auction results before placing an order

How Do Treasury Bill Auctions Work?

The Treasury bill auction process begins when the U.S. Treasury announces a new bill and provides details such as the term, offering amount, auction date, and issue date. Investors then submit either competitive or noncompetitive bids through an eligible purchase channel. A noncompetitive bidder agrees to accept the rate determined by the auction, while a competitive bidder specifies the yield or rate they are willing to accept.

The Treasury evaluates competitive bids according to its auction rules and accepts bids until the securities offered have been allocated. The published Treasury bill auction results show important figures such as the high rate, investment rate, price, and other auction details. Newly issued T-bills are sold at a discount to face value and are redeemed at face value at maturity.

Key takeaway: With a noncompetitive bid, you are not choosing the auction rate yourself. You agree to accept the rate established by the auction, subject to the Treasury’s applicable rules.

Treasury Bill Auctions at a Glance

A Treasury bill auction follows a defined sequence. The U.S. Treasury first announces the new bill and its offering details. Investors then submit bids through an eligible purchase channel. Competitive bids include a specified rate or yield, while noncompetitive bidders agree to accept the rate established by the auction.

Auction Stage	What Happens
Announcement	The Treasury announces details such as the bill term, offering amount, auction date, and issue date.
Bidding	Investors submit competitive or noncompetitive bids according to the applicable auction rules.
Bid processing	The Treasury evaluates competitive bids and allocates the securities under its auction rules.
Auction results	The published results can show the high rate, investment rate, price, and other auction statistics.
Settlement	Successful purchases are issued on the scheduled issue date under the terms of the auction.

Quick Take: Think of a T-bill auction as a structured process: the Treasury announces the issue, investors bid, the bids are processed, auction results are published, and successful purchases are settled. The next sections explain what happens inside each step.

Treasury Bill Auction Guide for Beginners

How Treasury Bill Auctions Work If you are new to T-bills, the auction process may look complicated at first. The basic idea is straightforward: the Treasury announces a new bill, investors submit bids, and the Treasury processes those bids under its auction rules. The results then show the rates and price associated with that particular issue.

Start With the Auction Announcement

Before placing an order, review the applicable Treasury auction announcement. It provides important details such as the bill’s term, offering amount, CUSIP, auction date, issue date, and maturity date. It also states the applicable bidding deadlines and other terms for that auction.

Know Which Bid You Are Using

A noncompetitive bid does not require you to specify a discount rate. You agree to accept the rate determined through the auction, subject to the Treasury’s rules. A competitive bidder, by contrast, specifies the discount rate they are willing to accept for a Treasury bill. Competitive bidding has additional requirements and is generally more relevant to institutional or experienced market participants.

Choose the bill and review its current auction announcement.
Select an eligible purchase channel, such as TreasuryDirect or a brokerage.
Submit the appropriate bid before the deadline stated for that auction.
Review the published auction results and settlement details afterward.

Beginner tip: If you are buying T-bills for the first time, focus on understanding noncompetitive bidding, the auction deadline, and the published results before learning the more technical competitive bidding process.

How the Treasury Bill Auction Process Works

The Treasury bill auction process follows a defined sequence. The Treasury announces the offering, investors submit bids, the bids are evaluated under the auction rules, and the results establish the terms for the newly issued bills.

1. The Treasury Announces the Bill

The Treasury publishes an offering announcement with details such as the bill’s term, offering amount, CUSIP, auction date, issue date, and maturity date. The announcement also provides the applicable bidding deadlines and other terms for that specific offering.

2. Investors Submit Bids

A noncompetitive bidder does not specify a discount rate and agrees to accept the rate determined by the auction, subject to the applicable rules. A competitive bidder specifies the discount rate they are willing to accept. TreasuryDirect accepts noncompetitive bids; competitive bids must be submitted through an eligible competitive bidding channel.

3. Noncompetitive and Competitive Bids Are Processed

After the applicable deadlines, the Treasury accepts timely noncompetitive bids according to its rules. It then evaluates competitive bids, starting with the lowest discount rates and moving upward until the required amount has been allocated. If necessary, bids at the highest accepted rate can be prorated.

4. The High Rate and Other Results Are Published

For a Treasury bill, the highest accepted competitive discount rate is reported as the high rate. Treasury auction results can also report the investment rate, price, bid amounts, accepted amounts, and other auction statistics. These figures describe the outcome of that particular auction.

5. Successful Purchases Are Settled

Successful purchases are issued on the scheduled issue date. Treasury bills are issued at a discount to face value and, when held to maturity, are redeemed at face value. The difference between the purchase price and the amount received at maturity represents the bill’s return before applicable taxes and other costs.

Key Point: The auction connects investor bids with the final terms of a newly issued T-bill. For a noncompetitive bidder, the rate is not chosen manually; it is determined through the auction.

Benefits and Drawbacks of Treasury Bill Auctions

Buying a newly issued T-bill at auction has several practical features. At the same time, the auction process has rules and trade-offs that investors should understand before placing an order.

Potential Benefits

You can purchase a newly issued Treasury bill at auction instead of buying an existing bill in the secondary market.
A noncompetitive bid simplifies rate selection because you agree to accept the rate determined by the auction.
T-bills have short maturities, which can make them relevant for investors planning around a specific short-term cash need.

Potential Drawbacks

When you submit a noncompetitive bid, the auction-determined rate is not known in advance.
Competitive bidding requires you to specify a discount rate and can involve partial allocation or no allocation when the bid is not accepted under the auction rules.
If you sell a T-bill before maturity, you generally do so through the secondary market, where its market price may be above or below your original purchase price.

Quick Take: Treasury bill auctions offer a defined process for purchasing newly issued bills, but the experience differs depending on the type of bid. Noncompetitive bidding focuses on accepting the auction result, while competitive bidding gives the bidder a specified rate to submit under the Treasury’s rules.

Competitive vs. Noncompetitive Bids

A major part of the Treasury bill bidding process is understanding the difference between competitive and noncompetitive bids. Both participate in the auction, but the bidder’s role and the way the award is determined are different.

Feature	Noncompetitive Bid	Competitive Bid
Rate specified?	No. The bidder accepts the rate determined by the auction.	Yes. For T-bills, the bidder specifies a discount rate.
How the award is determined	The bid receives the applicable auction-determined rate under the Treasury’s rules.	Bids are evaluated from the lowest discount rates upward until the offering is allocated.
Allocation	Timely noncompetitive bids are accepted according to the applicable auction rules and limits.	Bids at the highest accepted discount rate may be prorated when the amount requested exceeds the amount available.
TreasuryDirect	Noncompetitive auction bidding is available.	Competitive bidding is not available through TreasuryDirect.
Rate uncertainty	The auction-determined rate is not known when the bid is submitted.	The bidder specifies the discount rate for the Treasury to evaluate.

How Competitive Bids Affect the Auction

After noncompetitive bids are accounted for under the auction rules, the Treasury evaluates competitive bids starting with the lowest discount rates. It continues upward until the amount needed to meet the offering has been allocated. When demand at the highest accepted discount rate is greater than the remaining amount available, bids at that rate can be prorated. The highest accepted discount rate becomes the high rate for the bill auction.

Quick Take: A noncompetitive bid accepts the auction-determined rate. A competitive bid specifies a discount rate for evaluation, and its allocation depends on where that bid falls within the competitive bidding process.

Costs, Risks, and Practical Tips

A Treasury bill auction does not work like a traditional product purchase with a posted retail price. The final auction result determines the terms for the newly issued bill, so it is important to understand the potential costs, tax treatment, and risks before placing an order.

Costs to Watch

Purchase costs: Check the terms of your purchase channel. TreasuryDirect and individual brokerages can have different policies for fees, commissions, transfers, and other services.
Taxes: Treasury bill income is generally subject to federal income tax but is exempt from state and local income taxes. Treasury obligations are reported on Form 1099-INT, generally in Box 3.
Early-sale costs: If you sell a T-bill before maturity, the market price may be different from what you originally paid. Brokerage charges or other transaction costs may also apply.

Risks to Understand

Holding a T-bill until maturity avoids the need to sell it at a market price before the scheduled maturity date, but it does not eliminate every consideration. Inflation can reduce the purchasing power of the return, and selling before maturity exposes you to changes in market prices and interest rates. There is also auction-rate uncertainty when using a noncompetitive bid because the final rate is not known when the bid is submitted.

Practical Tips Before You Bid

Read the current Treasury auction announcement instead of relying on an old auction date or deadline.
Know whether you are submitting a competitive or noncompetitive bid.
Compare the auction’s published investment rate with other available short-term options when evaluating the return.
If you may need the money before maturity, understand how the secondary market could affect the price you receive.

Quick Take: The auction determines the rate for a newly issued T-bill, but your overall result also depends on taxes, the purchase channel, your holding period, and what happens if you need to sell before maturity.

Common Mistakes and a Real-Life Example

Knowing how Treasury bill auctions work can prevent simple ordering mistakes. The most useful checks happen before the bid is submitted and again after the auction results are published.

Common Auction Mistakes

Using an outdated auction deadline: Each offering has its own announcement and applicable submission deadlines.
Confusing the high rate with the investment rate: These are different auction figures and should not be treated as interchangeable.
Entering a competitive rate without understanding the rules: A competitive bidder specifies a discount rate, and the bid may not receive the requested allocation.
Ignoring the issue and maturity dates: The purchase should be considered alongside the date when the funds are scheduled to become available at maturity.

Real-Life Example

Consider Maria, who wants to place a $10,000 order for a newly issued T-bill. She reviews the current auction announcement and chooses a noncompetitive bid through an eligible purchase channel. Because she is using a noncompetitive bid, she does not specify a discount rate. Instead, she agrees to accept the rate established by the auction, subject to the applicable Treasury rules.

Once the auction is completed, Maria can review the published Treasury bill auction results to see the high rate, investment rate, price, and other reported figures for that issue. Her purchase is settled according to the auction schedule. If she holds the T-bill until maturity, it is redeemed for its face value. If she sells before maturity, the market price at that time may be different from the amount she originally paid.

Practical Lesson: Before submitting an auction order, verify the current offering, bid type, deadline, issue date, and maturity date. Afterward, use the published auction results to understand the actual terms of the new T-bill.

Who Should Consider Buying at Auction?

Buying a T-bill at auction may be relevant when your investment timeline lines up with the bill’s maturity date and you want a newly issued Treasury security. The auction process can also be useful to understand if you prefer to know the offering details, bidding rules, and settlement schedule before placing an order.

Situations to Consider

You want to purchase a newly issued T-bill rather than an existing bill in the secondary market.
You can plan your cash needs around the bill’s scheduled maturity date.
You understand whether your purchase will use a competitive or noncompetitive bid.
You are comfortable reviewing the current auction announcement and the results published after the auction.

When Timing Matters More

If you may need access to the money before maturity, buying at auction does not remove the need to consider secondary-market conditions. Selling before maturity can expose you to a market price that is different from the amount originally paid.

Quick Take: The key question is whether the auction’s bill term, maturity date, bidding method, and liquidity considerations fit your particular cash-flow needs.

Treasury Bill Auction FAQs

1. How do Treasury bill auctions work?

The Treasury announces a new bill, investors submit competitive or noncompetitive bids, and the Treasury processes those bids under its auction rules. The published auction results then show the rates, price, and other details for that issue.

2. What is a noncompetitive bid for a T-bill?

A noncompetitive bidder does not specify a discount rate. Instead, the bidder agrees to accept the rate determined by the auction, subject to applicable Treasury rules.

3. What is a competitive bid for a Treasury bill?

A competitive bidder specifies the discount rate they are willing to accept. For Treasury bills, competitive bids are evaluated from the lowest discount rates upward until the offering is allocated under the applicable auction rules.

4. What is the Treasury bill high rate?

The high rate is the highest accepted competitive discount rate for a Treasury bill auction. Competitive bids at that rate may be prorated when the amount requested is greater than the amount available for allocation.

5. Can I submit a competitive bid through TreasuryDirect?

No. TreasuryDirect does not accept competitive bids. Competitive bids must be submitted through an eligible competitive bidding channel.

6. When do I find out the T-bill auction rate?

The Treasury publishes the final auction results after the auction. A noncompetitive bidder therefore does not know the auction-determined rate when submitting the bid.

7. Do Treasury bills pay monthly interest?

No. Treasury bills do not make periodic coupon interest payments. They are generally issued at a discount to face value and, when held to maturity, are redeemed at face value. The difference between the purchase price and face value represents the return before applicable taxes.

8. Are Treasury bill auction earnings taxable?

Generally, yes. Treasury bill interest is subject to federal income tax but is exempt from state and local income taxes. The IRS generally reports Treasury interest on Form 1099-INT in Box 3.

Quick Take: The core auction concepts are the bid type, discount rate, high rate, auction results, and settlement. Understanding these terms makes Treasury bill auction results much easier to read.

Final Takeaway

The easiest way to understand how Treasury bill auctions work is to think of the auction as a structured process rather than a traditional bidding contest. The Treasury announces the issue, investors submit bids, the Treasury processes those bids under its rules, and the auction results are published afterward.

The key distinction is between the two bid types. A noncompetitive bidder agrees to accept the rate established by the auction. A competitive bidder specifies a discount rate for the Treasury to evaluate. The resulting auction data can include the high rate, investment rate, price, and other statistics for that issue.

From there, the practical details matter: check the bill’s maturity date, understand the purchase channel, consider the tax treatment, and know what could happen if you need to sell before maturity. Most importantly, use the current Treasury offering announcement and auction results for the specific bill you are considering.

Remember: Auction dates, deadlines, offering amounts, rates, and other terms can vary by Treasury bill offering. Always review the information for the specific auction before submitting an order.

Have a Money Question? Keep Exploring.

Understanding the auction process is a useful starting point. You can continue by exploring how Treasury bills are purchased and how they fit into the broader Treasury market.

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Treasury Bills Explained

How to Buy Treasury Bills

September 21, 2026

Category: Investing

Treasury Bills vs CDs: Tax Differences | 2026 Guide

Treasury Bills vs CDs: Tax Differences

Treasury Bills vs CDs: Tax Differences

What You’ll Learn

Quick Answer: How Do Treasury Bills and CDs Differ on Taxes?

Key Takeaways

Table of Contents

Treasury Bills vs CDs: At a Glance

Quick Facts

Best For Comparing

Complete Beginner Guide to Treasury Bills vs CDs Tax Differences

1. How Are Treasury Bills Taxed?

2. How Are CDs Taxed?

3. Why Can Your State Matter?

4. How Is the Income Reported?

How the Tax Treatment Works

Step 1: Understand How the Income Is Created

Step 2: Consider Federal Income Tax

Step 3: Check State and Local Taxes

Step 4: Compare After-Tax Income

Benefits & Drawbacks of the Tax Differences

Benefits to Consider

Drawbacks to Consider

Treasury Bills vs CDs: Detailed Tax Comparison

Why the Tax Difference Matters

Costs, Risks & Expert Tips

Costs to Check

Risks and Tax Details to Watch

Common Mistakes & Real-Life Example

Common Tax Mistakes to Avoid

A Simple $10,000 Example

Who Should Consider Treasury Bills or CDs?

Treasury Bills May Be Relevant If…

CDs May Be Relevant If…

Frequently Asked Questions

1. Are Treasury bills or CDs taxed less?

2. Are T-bills tax-free?

3. Are CD earnings taxable?

4. Do T-bills avoid state income tax?

5. Do CDs pay state income tax?

6. How is T-bill interest reported?

7. When is CD interest taxed?

8. Should I compare T-bills and CDs by after-tax yield?

Final Verdict: Treasury Bills vs CDs: Tax Differences

Related Resources

Official Tax Resources

Have a Money Question? Keep Exploring.

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Do You Pay Federal Tax on Treasury Bills? 2026 Guide

Do You Pay Federal Tax on Treasury Bills?

Do You Pay Federal Tax on Treasury Bills?

What You’ll Learn

Quick Answer: Do You Pay Federal Tax on Treasury Bills?

Key Takeaways

Table of Contents

Treasury Bills and Federal Tax at a Glance

Complete Beginner Guide to T-Bill Federal Tax

1. How Do Treasury Bills Create Taxable Income?

2. Is the Entire T-Bill Amount Taxable?

3. When Is T-Bill Interest Reported?

4. Where Does Treasury Interest Appear?

How Federal Tax on T-Bills Works

Step 1: You Buy the Treasury Bill

Step 2: The Bill Reaches Maturity

Step 3: Federal Tax Applies

Step 4: The Interest Is Reported

Benefits & Drawbacks of Federal Tax on Treasury Bills

Potential Benefits

Potential Drawbacks

T-Bills vs. CDs vs. Savings vs. Money Market

One Important Distinction

Costs, Tax Risks & Expert Tips

Costs to Check

Tax Risks to Understand

Expert Tips for Cleaner Tax Reporting

Common Mistakes + Real-Life Example

Mistake 1: Assuming T-Bills Are Completely Tax-Free

Mistake 2: Ignoring Form 1099-INT

Mistake 3: Overlooking an Early Sale