Category: Investing

26-Week Treasury Bills Explained: Complete 2026 Guide

26-Week Treasury Bills Explained: A Complete Beginner Guide for 2026

Subhash Rukade

Founder, FinanceInvestment

TREASURY GUIDE

BEGINNER GUIDE

Last Updated

September 17, 2026

Reading Time

About 15 minutes

Guide Focus

182-Day / 26-Week T-Bills

26-Week Treasury Bills

A Six-Month Cash Plan With a Clear Finish Line

26-Week Treasury Bills can make sense when you have cash that you do not need immediately but also do not want to lock away for years. A 26-week bill is a 182-day Treasury security, giving you a specific maturity date and a defined time frame for your money.

The basic setup is simple. Treasury bills are generally purchased at a discount to their face value rather than paying a regular monthly or quarterly coupon. When the bill matures, you receive its face value. The difference between what you paid and the amount you receive represents the return before taxes.

That makes the calendar especially useful. Instead of asking only, “What rate will I earn?” a better starting point is “When will I need this money again?” If your cash goal lines up with the 182-day maturity, a 26-week T-bill can give that money a clearly defined destination.

What You’ll Learn

How 26-week Treasury bills are priced and purchased.
How the 182-day auction and maturity process works.
How taxes, liquidity, and early-sale risk can affect your results.
How 26-week T-bills compare with savings accounts, money market accounts, and CDs.
How to decide whether a six-month maturity fits your cash needs.

QUICK ANSWER

What Is a 26-Week Treasury Bill?

A 26-week Treasury bill is a short-term U.S. government debt security with a 182-day term. It is generally purchased below its face value and redeemed at face value when it matures. The difference between the purchase price and maturity value is the bill’s return before taxes. Unlike Treasury notes and bonds, a T-bill does not make scheduled coupon payments during its term.

Key Takeaways

Term: A 26-week bill has a 182-day maturity.
Pricing: It is generally bought at a discount to face value.
Payments: There are no regular coupon payments during the term.
Maturity: The Treasury pays the bill’s face value at maturity.
Minimum: TreasuryDirect auction offerings generally use $100 purchase increments.
Taxes: Treasury bill interest is generally subject to federal income tax but exempt from state and local income taxes.

BOTTOM LINE:

Think of a 26-week T-bill as a defined six-month cash cycle: buy at the auction, hold through the 182-day term, receive the face value at maturity, then decide what to do with the money next.

26-Week T-Bills at a Glance

A 26-week Treasury bill gives your cash a defined 182-day timeline. The U.S. Treasury identifies it as a 182-Day Bill or 26-Week Bill. Rather than paying a regular coupon, the bill is generally issued at a discount to its face value and pays the face value at maturity.

Quick Fact	26-Week T-Bill
Term	182 days
Minimum purchase	$100 and multiples of $100
Pricing	Generally below face value
Coupon payments	None
At maturity	Face value is paid

QUICK TAKE:

The useful numbers are the purchase price, face value, and maturity date. Together, they show how much cash you put in, when it comes back, and the gross difference before taxes.

Complete Beginner Guide to 26-Week Treasury Bills

26-Week Treasury Bills If Treasury bills are new to you, think of a 26-week bill as a defined cash commitment rather than a stock-market investment. It is a short-term U.S. government debt security with a 182-day maturity. You purchase the bill, keep track of its maturity date, and receive its face value when it matures.

The pricing is different from a savings account. Treasury bills are generally sold at a discount to face value. For example, an illustrative $10,000 face-value bill might cost less than $10,000 at purchase. If you hold it to maturity, the Treasury pays the full $10,000. The difference is the gross interest earned before taxes.

A Simple Way to Approach Your First 26-Week T-Bill

Set aside the right amount: Use money that does not need to cover an expense before the bill’s maturity date.
Choose where to buy: You can purchase Treasury bills through TreasuryDirect or through a bank or brokerage that offers Treasury securities.
Review the auction details: Check the amount, issue date, and maturity date before submitting your order.
Plan around maturity: Know when the 182-day term ends and what the cash will be needed for afterward.
Decide what comes next: At maturity, you can use the proceeds or consider another Treasury bill or another cash option.

BEGINNER TIP:

Do not look at the headline annualized rate alone. Compare the purchase price, face value, maturity date, and the length of time your cash will be committed.

How 26-Week Treasury Bills Work

The easiest way to understand a 26-week T-bill is to follow the money from auction to maturity. Treasury sells bills through public auctions. For a typical individual investor using TreasuryDirect, a noncompetitive bid means you agree to accept the price or rate determined by the auction rather than choosing your own rate.

The 182-Day Process

Auction is announced: Treasury publishes the security’s term, offering details, auction date, issue date, and maturity date.
You place an order: A noncompetitive order states how much you want to buy, subject to the auction’s minimum and purchase increments.
The auction sets the price: Competitive bidders submit discount rates, and the auction determines the accepted rate and resulting price for the bill.
The bill is issued: On the issue date, the Treasury delivers the security and the purchase amount is settled.
The bill matures: After 182 days, the Treasury pays the bill’s face value. The difference between the purchase price and face value represents the gross return before taxes.

A NUMBER WORTH WATCHING:

The auction’s quoted discount rate is not the same thing as the exact dollar return on your 182-day investment. Your actual result depends on the purchase price and face value.

A Simple Example

Suppose an illustrative 26-week bill has a $10,000 face value and the auction price is $9,800. If you hold the bill until maturity, you would receive $10,000. The $200 difference is the gross return on that example before taxes. The actual purchase price is determined by the auction, so this example is for understanding the mechanics only.

Benefits and Drawbacks of 26-Week Treasury Bills

A 26-week Treasury bill can be a practical fit for money with a known six-month timeline. But the same fixed maturity that makes planning easier can be less convenient if your plans change. Here are the main trade-offs to consider.

Benefits

Clear maturity date: The 182-day term gives you a specific point when the bill reaches maturity.
Direct U.S. government obligation: A Treasury bill is a debt obligation of the U.S. government.
Simple cash flow: There are no scheduled coupon payments to track during the bill’s term.
State-tax advantage: Treasury bill interest is generally exempt from state and local income taxes.

Drawbacks

Less convenient for near-term needs: A six-month maturity may not fit money you could need soon.
No periodic coupon: The return is built into the difference between the purchase price and maturity value.
Early-sale risk: If you sell before maturity, the market price may be higher or lower than your purchase price.
Reinvestment risk: The rate available when the bill matures may be different from the rate available today.

QUICK TAKE:

The biggest question is timing. A 26-week T-bill can suit money with a clear six-month purpose, while cash that may be needed earlier deserves a closer look at liquidity and early-sale risk.

26-Week T-Bills vs. Other Short-Term Options

A 26-week Treasury bill is one option for money with a six-month horizon. A useful comparison goes beyond the advertised rate. Look at how the money is accessed, what protects it, how it is taxed, and when you expect to need it.

Option	Access	Protection / Backing	Tax Treatment
26-Week T-Bill	182-day maturity; marketable and may be sold before maturity, subject to the applicable purchase and market rules	Direct U.S. government obligation; not FDIC-insured	Federal income tax generally applies; state and local income taxes generally do not
High-Yield Savings Account	Generally easier access to cash, subject to account terms	FDIC insurance may apply to eligible deposits at an FDIC-insured bank, within applicable limits	Interest generally taxable
Money Market Deposit Account	Generally provides account access, subject to the institution’s terms	FDIC insurance may apply to eligible deposits at an FDIC-insured bank, within applicable limits	Interest generally taxable
Short-Term CD	Fixed term; early withdrawal may result in a bank-imposed penalty	FDIC insurance may apply to eligible deposits at an FDIC-insured bank, within applicable limits	Interest generally taxable

The Key Difference

A T-bill is a marketable Treasury security, while a savings account and money market deposit account are bank deposits. A CD also has a defined term, but its early-access rules come from the issuing bank. A money market fund is different from a money market deposit account because it is an investment product rather than an FDIC-insured bank deposit.

QUICK TAKE:

Start with the purpose of the cash. A 26-week T-bill gives you a defined maturity, while deposit accounts generally emphasize easier access. The comparison should match your timeline, liquidity needs, and tax situation.

Costs, Taxes, Risks and Expert Tips

The purchase price is only one part of the picture. Before buying a 26-week T-bill, look at the tax treatment, how you would access the money if plans change, and what could happen when the bill matures.

Costs and Taxes

TreasuryDirect: There are no fees for holding marketable Treasury securities in a TreasuryDirect account.
Brokerage costs: A bank or broker may have its own fees or pricing arrangements.
Taxes: Treasury bill interest is generally subject to federal income tax but exempt from state and local income taxes.

Risks to Keep in Mind

Early sale: A marketable T-bill sold before maturity can have a market price different from what you originally paid.
Reinvestment: The rate available after 182 days may be higher or lower than today’s rate.
Timing: Money needed before maturity may not be a good match for a six-month security.

EXPERT TIP:

Start with the maturity date, not the advertised rate. If the 182-day timeline matches when you expect to need the money, then compare the purchase price, expected maturity value, taxes, and alternatives.

Common Mistakes and a Real-Life Example

Common Mistakes to Avoid

Confusing an annualized rate with your actual return:
A quoted Treasury rate is annualized. It is not the same as the dollar amount earned over 182 days.
Overlooking the maturity date:
A six-month Treasury bill may not fit money you expect to spend before the bill matures.
Looking only at the gross return:
Federal income tax can reduce the amount you keep after the bill matures.
Assuming the next auction will have the same rate:
Treasury auction rates can change, so a future reinvestment may produce a different return.

Real-Life Example: A $10,000 Face-Value Bill

Suppose an investor buys an illustrative 26-week Treasury bill with a $10,000 face value for $9,800. If the investor holds the bill until maturity, the Treasury pays $10,000. The $200 difference is the gross interest income in this simplified example.

For a typical individual investor who uses the cash method and holds the bill to maturity, the Treasury bill discount is generally reported as interest income when the bill is paid at maturity. Treasury interest is subject to federal income tax but exempt from state and local income taxes. Tax treatment can differ in other situations, including certain accounting methods or secondary-market transactions.

QUICK TAKE:

Before buying, write down three numbers: your purchase price, the face value at maturity, and the date you expect the money back.

Who Should Choose 26-Week T-Bills?

A 26-week Treasury bill may fit investors who have a clear use for their cash about six months from now. The key is not simply the length of the bill. It is whether the 182-day timeline matches your plans.

A 26-Week T-Bill May Fit If You:

Have cash you do not expect to need during the 182-day term.
Want a specific maturity date for a planned future expense or cash need.
Prefer a short-term U.S. government debt security rather than leaving the money in a bank deposit.
Live in a state where the exemption from state and local income taxes could matter to your after-tax return.

Consider Another Cash Option If:

You may need the money sooner, want everyday account access, or are uncomfortable with the possibility of selling a marketable T-bill before maturity at a price different from what you paid. Before buying, ask one simple question: Does my cash plan line up with the bill’s maturity date?

Frequently Asked Questions About 26-Week Treasury Bills

Here are eight common questions investors ask before buying a 26-week Treasury bill.

1. What is a 26-week Treasury bill?

A 26-week Treasury bill is a short-term U.S. government debt security with a 182-day maturity. It is generally issued at a discount and pays its face value at maturity.

2. How does a 26-week T-bill make money?

The bill is generally purchased for less than its face value. The difference between the purchase price and the amount received at maturity represents the interest income.

3. What is the minimum investment?

Treasury auction announcements list a minimum bid amount of $100 and multiples of $100 for 26-week bills.

4. Do 26-week Treasury bills pay monthly interest?

No. Treasury bills do not make scheduled monthly or quarterly coupon payments. The return comes from the difference between the purchase price and the amount paid at maturity.

5. Are 26-week Treasury bills taxable?

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

6. Can I sell a 26-week T-bill before maturity?

Treasury bills are marketable securities, so they can generally be sold before maturity. However, the market price can be higher or lower than the price you originally paid.

7. Is a 26-week T-bill the same as a 6-month CD?

No. A T-bill is a U.S. Treasury security, while a CD is a bank deposit. Their tax treatment, liquidity, pricing, and protection can differ.

8. What happens when a 26-week T-bill matures?

At maturity, the Treasury pays the bill’s face value. You can then use the proceeds, move the money elsewhere, or reinvest in another Treasury security.

Quick Take:
A 26-week T-bill works around a defined 182-day timeline. Before buying, check the purchase price, maturity date, tax treatment, and whether you may need the cash earlier.

Final Verdict: Is a 26-Week Treasury Bill Right for Your Cash?

A 26-week Treasury bill is built around a simple idea: commit cash for about six months and receive the bill’s face value when it matures. Treasury auction documents identify the security as a 182-day bill, with a minimum bid amount of $100 and multiples of $100.

The real question is not simply how much a 26-week T-bill can earn. It is whether the maturity date matches when you expect to need the money. If you need flexibility before then, a savings account or another short-term option may offer a different access arrangement. If your timeline is clear, the T-bill’s defined maturity can make the cash plan easier to map out.

Bottom line:
Match the 182-day maturity to the job your money needs to perform. Then compare the purchase price, maturity value, taxes, liquidity, and alternatives before placing an order.

For a broader introduction to Treasury securities and different maturities, continue with our

Treasury Bills Explained guide
.

Have a Money Question? Keep Exploring.

Understanding short-term investments gets easier when you connect the numbers to your actual cash needs. Keep researching, compare the alternatives, and choose a timeline that makes sense for your money.

📩 Get in Touch With FinanceInvestment

Have a question or a topic you’d like us to cover?

Email FinanceInvestment

Continue Your Research

Treasury Bills Explained →

Treasury Bills vs. Treasury Bonds →

September 17, 2026

13-Week Treasury Bills Explained: Complete 2026 Guide

13-Week Treasury Bills Explained: A Complete Beginner Guide for 2026

Subhash Rukade

Founder, FinanceInvestment

TREASURY GUIDE

BEGINNER GUIDE

Last Updated

September 17, 2026

Reading Time

About 15 minutes

Guide Focus

91-Day Treasury Bills

13-Week Treasury Bills

13-Week Treasury Bills give investors a simple way to put money to work for about three months while keeping a clear maturity date in sight. A 13-week Treasury bill is a short-term U.S. government security with a 91-day term. It is generally purchased at a discount and pays its face value when it matures.

That pricing structure can feel confusing at first. You may see a Treasury bill quoted with a discount rate, investment rate, or yield rather than a traditional interest rate. Your actual return comes from the difference between what you pay and the amount you receive at maturity.

This guide breaks the process into practical steps. You’ll see how the 13-week Treasury bill auction works, how much a purchase can potentially earn, what taxes apply, where you can buy T-bills, and what happens if you want to reinvest after 91 days.

What You’ll Learn

How 13-week Treasury bills work from purchase to maturity.
How Treasury auctions, discount pricing, and yields fit together.
How to estimate your dollar return on a T-bill investment.
How federal, state, and local taxes affect Treasury bill income.
How TreasuryDirect and brokerage accounts can be used to buy T-bills.
What to consider before reinvesting or selling before maturity.

Quick Answer

What Is a 13-Week Treasury Bill?

A 13-week Treasury bill is a short-term U.S. Treasury security that matures in 91 days. Instead of paying regular interest every month, it is generally sold at a discount and pays its full face value at maturity. Your return is the difference between the purchase price and the amount you receive when the bill matures.

Key Takeaways

Term: The standard 13-week bill has a 91-day maturity.
Return: The discount between your purchase price and face value represents the bill’s interest income.
Purchase: Investors can buy Treasury bills through TreasuryDirect or eligible banks and brokers.
Taxes: Treasury bill interest is subject to federal income tax but is generally exempt from state and local income taxes.
Timing: Holding the bill until maturity gives you a defined 91-day investment timeline; selling earlier can expose you to market-price changes.

13-Week T-Bills at a Glance

A 13-week Treasury bill is a short-term U.S. Treasury security with a 91-day maturity. It does not make regular coupon payments. Instead, Treasury bills are generally issued at a discount to face value, with the face value paid when the bill matures. The difference between the purchase price and maturity value represents the interest earned.

Feature	13-Week T-Bill
Maturity	91 days
Minimum purchase	Generally $100, in $100 multiples
Pricing	Generally sold at a discount
Periodic coupon	None
At maturity	Face value is paid

QUICK TAKE:
Think of a 13-week T-bill as a defined 91-day cash cycle. You buy the bill below its face value, hold it through maturity, and receive the face value. The difference is your interest income before taxes.

Complete Beginner Guide to 13-Week Treasury Bills

If you have never bought a Treasury bill, the basic idea is easier than the terminology makes it sound. You are lending money to the U.S. government for a short period. With a 13-week bill, that period is 91 days.

The bill has a face value, but you generally pay less than that amount when you buy it. At maturity, you receive the face value. That difference is your interest income before taxes. Treasury bills do not send you monthly or quarterly coupon payments along the way.

How a Beginner Can Approach a 13-Week T-Bill

Choose the amount: Treasury bills are generally available in $100 increments.
Choose where to buy: You can use TreasuryDirect or a brokerage account that offers Treasury securities.
Enter your order: Individual investors commonly use a noncompetitive bid at Treasury auctions, accepting the auction-determined terms.
Hold until maturity: The 13-week bill reaches maturity after 91 days, when its face value is paid.
Decide what happens next: You can use the proceeds for another goal or reinvest them in a new Treasury security.

Beginner tip:
Don’t judge a T-bill only by its advertised rate. Look at the purchase price, maturity value, holding period, and taxes to understand what the investment means in actual dollars.

Treasury bill interest is taxable at the federal level but generally exempt from state and local income taxes.

How 13-Week Treasury Bills Work

A simple way to understand a 13-week Treasury bill is to follow it from auction to maturity. Treasury sells bills through public auctions using a single-price auction process. Individual investors can place a noncompetitive bid, which means they accept the rate or discount determined at the auction rather than choosing their own rate.

The 91-Day Process

Auction: Treasury accepts competitive and noncompetitive bids for the bill. The auction establishes the price used for successful purchases.
Purchase: A Treasury bill is generally sold below its face value. Your purchase price depends on the auction result and the amount of face value you request.
Settlement: Once the purchase is settled, you own the Treasury bill electronically. TreasuryDirect draws the required funds from your designated funding source.
Holding period: The bill remains outstanding for its 13-week term. Unlike Treasury notes and bonds, it does not make periodic coupon payments.
Maturity: At maturity, the Treasury pays the bill’s face value. The difference between the purchase price and face value is the bill’s interest income.

For example, imagine a 13-week bill with a $10,000 face value is issued for $9,900. If you hold it until maturity, you receive $10,000. The $100 difference represents your gross interest income before taxes. This is only an illustration; the actual purchase price is set by the auction.

Important:
A Treasury bill’s quoted rate is annualized. It is not the same thing as the dollar amount you will earn over 91 days. To understand your actual return, look at the purchase price, face value, and holding period together.

Benefits and Drawbacks of 13-Week Treasury Bills

A 13-week T-bill can be useful when you want a defined short-term investment period, but it is not a perfect fit for every cash need. The biggest trade-off is between predictable maturity timing and the flexibility you may want from an ordinary savings account.

Benefits

Short commitment: The 91-day maturity can work well for money you expect to need within a few months.
Defined maturity value: If held to maturity, the bill pays its face value.
Federal government security: T-bills are direct obligations of the U.S. government.
Tax advantage: Treasury interest is generally exempt from state and local income taxes.

Drawbacks

No regular income payments: You do not receive monthly or quarterly coupon payments.
Cash is committed: Your money is tied to the security until maturity unless you sell it.
Early-sale risk: Selling before maturity means accepting the prevailing market price, which can be higher or lower than your purchase price.
Reinvestment risk: When the bill matures, a new 13-week bill may offer a different rate.

QUICK TAKE:
The appeal of a 13-week T-bill is its defined 91-day timeline and government backing. The main limitation is that your next investment rate is not locked in today, and selling before maturity exposes you to market pricing.

13-Week T-Bills vs. Other Short-Term Options

A 13-week Treasury bill is one of several ways to manage cash over a short period. Savings accounts, money market deposit accounts, and short-term CDs work differently. The useful comparison is not just the advertised rate. Liquidity, deposit insurance, taxes, maturity, and what happens if you need the money early all matter.

Option	Access to Money	Protection / Backing	Tax Treatment
13-Week T-Bill	91-day maturity; may be sold before maturity through a bank, broker, or dealer	Direct U.S. government obligation; not FDIC-insured	Federal tax; generally exempt from state and local income taxes
High-Yield Savings	Generally designed for easier access to deposited cash	FDIC insurance may apply when held as an eligible deposit at an FDIC-insured bank	Interest generally subject to federal income tax
Money Market Deposit Account	Generally provides account access, subject to the institution’s terms	FDIC insurance may apply when eligible	Interest generally subject to federal income tax
Short-Term CD	Fixed term; early withdrawal may involve a penalty	FDIC insurance may apply when eligible	Interest generally subject to federal income tax

The biggest practical difference is how you access the money. A savings account or money market deposit account is built around account access, while a CD typically asks you to accept a defined term. A T-bill has a maturity date, but because it is a marketable security, you can sell it before maturity. That sale happens at the prevailing market price, so the amount you receive can differ from what you originally paid.

QUICK TAKE:
Compare the entire cash arrangement rather than the headline rate alone. A 13-week T-bill offers a defined maturity and U.S. government backing, while eligible bank deposits can offer FDIC insurance and easier account access. The right comparison depends on when you need the money and how much flexibility you want.

Costs, Taxes, Risks, and Expert Tips

13-Week Treasury Bills A 13-week Treasury bill has a fairly simple structure, but the quoted rate is only one part of the decision. Your purchase price, account costs, tax treatment, and plans for the money can all affect the result.

Costs and Taxes

TreasuryDirect: TreasuryDirect does not charge a fee to purchase Treasury securities. A bank or broker may have its own pricing, commissions, or service terms.
Federal tax: Interest from Treasury bills is subject to federal income tax.
State and local tax: Treasury bill interest is exempt from state and local income taxes.

Risks and Practical Tips

Early sale: Selling before maturity exposes you to the prevailing market price and can produce a gain or loss compared with your purchase price.
Reinvestment: When the 91-day term ends, a new T-bill may carry a different rate.
Check the actual numbers: Compare the purchase price, face value, holding period, and taxes instead of relying only on an annualized quoted rate.

EXPERT TIP:
Match the maturity date with the approximate date you expect to use the money. That can reduce the chance that you will need to sell the bill early simply because your cash need arrived sooner than expected.

Tax note: Most individual investors use the cash method for federal tax reporting, but the tax treatment of a Treasury bill can differ when it is sold before maturity or held under special circumstances. Use your Form 1099-INT and current IRS guidance when preparing your return.

Common Mistakes and a Real-Life Example

Most beginner mistakes with 13-week Treasury bills come down to three things: misunderstanding the quoted rate, overlooking the maturity date, or failing to account for taxes. A quick check before placing an order can make the numbers much easier to understand.

Common Mistakes to Avoid

Confusing yield with a 91-day return:
The quoted Treasury rate is annualized. It should not be read as the exact percentage you will earn during the 13-week holding period.
Ignoring the maturity date:
If you need the money sooner, you may have to sell the bill before maturity at the prevailing market price.
Forgetting federal taxes:
Treasury bill interest is subject to federal income tax, although it is generally exempt from state and local income taxes.
Assuming the next bill will pay the same rate:
A new Treasury bill can have a different auction rate when your current bill matures.

Real-Life Example: A $10,000 Face-Value Bill

Suppose an investor buys a 13-week Treasury bill with a $10,000 face value for an illustrative purchase price of $9,900. If the investor holds the bill until maturity, the Treasury pays the $10,000 face value.

Illustrative purchase price
$9,900

Face value at maturity
$10,000

Gross difference
$100

For a typical cash-method individual investor who holds the bill to maturity, that $100 discount is generally reported as interest income when the bill matures. This example is illustrative only; $9,900 is not a current auction price.

QUICK TAKE:
Before buying, check three things together: the amount you pay, the face value you will receive at maturity, and the date you expect to need the money. That simple check can prevent many beginner mistakes.

Who Should Choose 13-Week T-Bills?

A 13-week Treasury bill may fit someone who has cash available for a short-term goal and does not expect to need it for about 91 days. The defined maturity can make it easier to coordinate the investment with a planned expense, a future purchase, or another financial decision.

A 13-Week T-Bill May Fit If You:

Have cash you can leave invested for roughly three months.
Want a specific maturity date rather than an open-ended savings arrangement.
Prefer a short-term U.S. government security for money that is not needed immediately.
Value the federal tax treatment of Treasury interest, including its general exemption from state and local income taxes.

Consider another option if:
You may need the money before the 91-day maturity date or want everyday access similar to a savings account. A T-bill can be sold before maturity, but its market price may differ from the amount you originally paid.

The key question is simple: does the 91-day timeline match the purpose and timing of your cash?

Frequently Asked Questions About 13-Week Treasury Bills

These common questions cover the basics of buying, holding, taxing, and using a 13-week Treasury bill.

1. What is a 13-week Treasury bill?

A 13-week Treasury bill is a short-term U.S. government security with a 91-day maturity. It is generally issued at a discount and pays its face value at maturity.

2. How does a 13-week T-bill make money?

You generally buy the bill for less than its face value. If you hold it to maturity, you receive the face value. The difference between your purchase price and the maturity value represents the gross interest income.

3. What is the minimum amount needed to buy a 13-week T-bill?

Treasury bills are generally offered in $100 increments. The amount actually paid depends on the bill’s auction price because T-bills are generally sold below face value.

4. Where can I buy 13-week Treasury bills?

Individual investors can buy Treasury bills through TreasuryDirect or through participating banks and brokerage firms. Brokers may also provide access to the secondary market.

5. How are 13-week Treasury bills taxed?

Treasury bill interest is subject to federal income tax but is exempt from state and local income taxes. For a typical cash-method taxpayer who holds the bill to maturity, the discount is generally reported as interest income when the bill matures.

6. Can I sell a 13-week T-bill before maturity?

Yes. Treasury bills are marketable securities and can generally be sold before maturity through a bank, broker, or dealer. The market price at the time of sale can be different from your original purchase price.

7. What happens when a 13-week T-bill matures?

At maturity, the Treasury pays the bill’s face value. You can use the proceeds for your cash needs or reinvest them in another Treasury security.

8. What should I consider before buying a 13-week T-bill?

Consider whether the 91-day maturity matches your cash timeline, whether you may need the money earlier, how the federal and state tax treatment affects you, and what rate may be available if you reinvest after maturity.

QUICK TAKE:
The core numbers are simple: your purchase price, the bill’s face value, and the 91-day maturity. The details that deserve extra attention are taxes, liquidity, and what you plan to do when the bill matures.

Final Verdict: What to Know Before Buying a 13-Week Treasury Bill

A 13-week Treasury bill is a short-term U.S. government security with a defined 91-day maturity. It is generally issued at a discount, and the Treasury pays the bill’s face value when it matures. The difference between the purchase price and maturity value represents the gross return for a bill held to maturity.

Before buying, look beyond the quoted annualized rate. Check the actual purchase price, the maturity date, federal tax treatment, your need for access to the money, and the rate that may be available if you reinvest after maturity.

BOTTOM LINE:
A 13-week T-bill follows a straightforward cycle:
purchase → 91-day holding period → maturity → next cash decision.
The important question is whether that timeline matches the purpose and timing of your money.

If your plans change before maturity, a T-bill can generally be sold through a bank, broker, or dealer, but its market price at that time may differ from your original purchase price.

Have a Money Question? Keep Exploring.

A 13-week Treasury bill is one piece of a short-term cash plan. Keep exploring Treasury securities, savings options, and other personal finance topics with practical FinanceInvestment guides.

📩 Get in Touch With FinanceInvestment

Have a question or a topic you’d like us to cover?

Email FinanceInvestment

Continue Your Research

Treasury Bills Explained

Treasury Bills vs. Treasury Bonds

September 16, 2026

8-Week Treasury Bills Explained: Complete 2026 Guide

8-Week Treasury Bills Explained: A Complete Beginner Guide for 2026

Subhash Rukade

Founder, FinanceInvestment

TREASURY GUIDE

BEGINNER GUIDE

Last Updated

September 16, 2026

Reading Time

About 15 minutes

8-WEEK TREASURY GUIDE

8-Week Treasury Bills Explained: The 56-Day Cash Cycle

8-Week Treasury Bills are short-term U.S. Treasury securities with a 56-day maturity. They are generally sold below their face value, and the investor receives the face value when the bill matures. The difference between those amounts represents the bill’s interest.

That 56-day window creates a useful middle ground between very short Treasury bills and longer cash commitments. But the number that gets attention first—the quoted annualized yield—is only part of the picture. The auction price, maturity date, taxes, access to the money and what happens after maturity all deserve attention.

If Treasury bills are new to you, start with our

complete Treasury bills guide
.
Then use this guide to focus specifically on the 8-week term, from buying the bill to deciding what to do with the proceeds after 56 days.

What You’ll Learn

How the 56 Days Work

Follow the bill from auction and purchase through its maturity date.

How You Earn

See how discount pricing creates the dollar return at maturity.

Taxes & Risks

Understand federal taxes, early sales and changing reinvestment rates.

Buying & Reinvesting

Learn where to buy and what your choices are when the bill matures.

QUICK ANSWER

How Do 8-Week Treasury Bills Work?

An 8-week Treasury bill is a 56-day U.S. Treasury security. It is generally issued at a discount to its face value. If you hold the bill until maturity, the Treasury pays the face value according to its terms, with the difference between your purchase price and that amount representing the gross interest.

Key Takeaways

56-Day Maturity

An 8-week bill is identified by Treasury as a 56-day bill.

Discount Pricing

The purchase price is generally below the bill’s face value.

No Coupon Payments

T-bills do not make regular interest payments during the term.

Federal Tax Applies

Treasury bill interest is subject to federal income tax but generally exempt from state and local income taxes.

Reinvestment Is Separate

A new bill can have a different yield when you reinvest after maturity.

Early Sale Has Market Risk

Selling before maturity means the price you receive can differ from what you paid.

Bottom line:
An 8-week T-bill is built around a defined 56-day holding period. The quoted annualized yield helps with comparisons, but the purchase price, maturity date, taxes and your plan for the money after maturity matter just as much.

Table of Contents

Jump directly to the part of this 8-week Treasury bill guide you want to explore.

8-Week Treasury Bills at a Glance

An 8-week Treasury bill is a short-term U.S. Treasury security
with a 56-day term. Instead of making regular interest payments,
a Treasury bill is generally issued at a discount to its face value. At maturity,
the investor receives the amount due under the bill’s terms, with the difference
between the purchase price and maturity value representing the investment’s gross
interest.

Quick Fact	What It Means
Term	56 days, commonly described by the Treasury as an 8-week bill
Pricing	Generally sold at a discount to face value
Interest	Comes from the difference between the purchase price and maturity value
Payments	No periodic coupon payments
Minimum bid	Current 8-week Treasury bill offerings specify $100 and multiples of $100
After maturity	You can use the proceeds or consider reinvesting in another Treasury security

QUICK TAKE

An 8-week T-bill is easiest to understand as a short cash cycle:
buy → wait 56 days → receive the maturity amount → decide what to do next.
The quoted yield helps compare investments, but your actual dollar return depends
on the purchase price, amount invested and maturity value.

8-Week Treasury Bills: A Complete Beginner Guide

8-Week Treasury Bills If you are new to Treasury bills, think of an 8-week Treasury bill
as a short-term place for money you expect to need after roughly two months.
The Treasury sells these securities through auctions. An 8-week bill is identified
by the U.S. Treasury as a 56-Day Bill.

Unlike a savings account or a Treasury note, an 8-week T-bill does not send you
regular interest payments. It is generally purchased for less than its face value.
If you hold it until maturity, the Treasury pays the amount due under the security’s
terms. The difference between what you paid and the maturity value is the basic
source of your gross return.

1. Choose the Amount

Decide how much cash you can leave invested for the 56-day term.

2. Enter an Auction

You can place a noncompetitive bid through TreasuryDirect or use a brokerage that offers Treasury auctions.

3. Pay the Purchase Price

The final auction price determines how much you pay for the bill.

4. Reach Maturity

After 56 days, the Treasury pays the maturity amount according to the bill’s terms.

BEGINNER TIP

Before buying, check the auction date, issue date and maturity date.
The maturity date matters most because that is when you expect the money to become
available again. Do not choose an 8-week bill simply because the quoted annualized
yield looks attractive; first make sure the 56-day timeline matches your cash needs.

How 8-Week Treasury Bills Work

The easiest way to understand an 8-week Treasury bill is to follow the money
from auction to maturity. The U.S. Treasury offers the bill at auction, and
the final auction results determine the price investors pay. The Treasury
identifies the 8-week security as a 56-Day Bill.

STEP 1

Auction

Treasury bills are offered through scheduled auctions. A noncompetitive
bidder accepts the auction’s resulting terms rather than specifying a rate.

STEP 2

Purchase

The bill is generally purchased below its face value. Your purchase price
depends on the auction result and the amount of the bill you buy.

STEP 3

56-Day Hold

The bill remains outstanding until its stated maturity date. It does not
make monthly or quarterly coupon payments during this period.

STEP 4

Maturity

At maturity, the Treasury pays the face value according to the bill’s
terms. The difference between your purchase price and that amount is
the basic gross return.

A Simple Example

Suppose an investor buys a hypothetical $1,000 face-value 8-week T-bill for
$992.50. If the investor holds it until maturity and receives $1,000, the
gross difference is $7.50. This is only an illustration;
the actual purchase price and return depend on the auction.

THE KEY IDEA

The quoted annualized yield helps investors compare short-term securities,
but it is not the same as the actual dollar amount earned over 56 days.
For your personal calculation, focus on the purchase price, face value,
amount invested and maturity date.

Benefits & Drawbacks of 8-Week Treasury Bills

An 8-week Treasury bill can be useful when you want a defined
short-term investment period. But the 56-day maturity also means you need to
plan around the money being invested. Here are the main advantages and trade-offs
to understand before buying.

Benefits to Know

Short maturity: The 56-day term gives the investment a clearly defined end date.
U.S. government security: Treasury bills are obligations of the U.S. government.
No periodic coupon: You do not receive monthly or quarterly interest payments.
State and local tax advantage: Treasury bill interest is generally exempt from state and local income taxes.
Flexible access: Investors can buy bills through TreasuryDirect or participating financial institutions and brokers.

Drawbacks to Consider

Limited day-to-day liquidity: Your money is committed to the security until maturity unless you sell it.
Early-sale price risk: If you sell before maturity, the market price can be higher or lower than your purchase price.
Federal taxes still apply: Treasury bill interest is generally subject to federal income tax.
Future rates can change: If you reinvest after maturity, the next 8-week bill may have a different auction yield.
No guaranteed future yield: Today’s auction result does not lock in the rate for your next Treasury bill.

The practical takeaway:
An 8-week T-bill works on a fixed 56-day timeline. Before investing, make sure
the maturity date fits your cash needs and remember that selling early introduces
market-price risk.

8-Week Treasury Bills vs Other Short-Term Options

An 8-week T-bill is only one way to manage money over a short period.
Savings accounts, money market accounts and CDs work differently, so the
comparison should go beyond the advertised rate. Your access needs, tax
situation and intended holding period can change the practical result.

Option	Time Structure	Access & Tax Notes
8-Week T-Bill	Fixed 56-day maturity	Can be held to maturity or sold in the secondary market; Treasury interest is generally exempt from state and local income taxes.
Savings Account	No fixed maturity	Designed for easier access; interest rates can change over time and eligible deposits may receive federal deposit insurance.
Money Market Account	No fixed maturity	Bank or credit-union deposit account with access features that may include checks or a debit card; rates can change.
CD	Fixed term selected at opening	Early withdrawal generally involves a penalty; CD interest is generally subject to applicable federal and state taxes.

What Should You Compare?

Start with the date you expect to need the money. A 56-day T-bill has a
defined maturity, while a savings or money market account does not lock
your funds into a specific maturity date. A CD also has a defined term,
but its early-access rules are different.

Taxes can also affect the comparison. Treasury bill interest is generally
subject to federal income tax but exempt from state and local income taxes.
Bank deposit interest generally does not receive that Treasury tax exemption.

QUICK COMPARISON

Think in terms of time, access, taxes and rate structure.
The highest advertised rate is not necessarily the most useful comparison
for money that has a specific job and a specific date.

Costs, Risks & Expert Tips for 8-Week Treasury Bills

The quoted yield is only one part of an 8-week Treasury bill
decision. Before buying, look at the purchase price, tax treatment, access to
your money and what could happen if you need to sell before the 56-day maturity.

Purchase Costs

TreasuryDirect does not charge a purchase fee or commission for Treasury
securities. A bank or broker may have its own fees, pricing or transaction policies.

Early-Sale Risk

If you sell before maturity, the bill’s market price can be above or below
your purchase price as market interest rates and other conditions change.

Tax Treatment

Treasury bill interest is subject to federal income tax but is exempt from
state and local income taxes.

Reinvestment Risk

When your bill matures, a new 8-week bill may have a different auction yield.
The next rate is not locked in by today’s purchase.

Three Checks Before You Buy

Check the dates: Know the auction date, issue date and
maturity date before committing your cash.
Check the price: Look at the actual purchase price rather
than treating the annualized yield as your 56-day dollar return.
Check your cash deadline: If you may need the money before
maturity, understand the secondary-market price risk before buying.

TAX RECORD TIP

Keep your Treasury purchase records and tax documents. For most individual
taxpayers using the cash method, Treasury bill interest is generally reported
when the bill is paid at maturity. Tax rules can differ for other situations.

Common Mistakes With 8-Week Treasury Bills

Most mistakes with an 8-week Treasury bill happen when investors
focus only on the quoted yield. The purchase price, maturity date and plan for
the cash can matter just as much.

Mistake 1: Treating Yield as 8-Week Return

The quoted Treasury yield is annualized. It should not be treated as the
actual percentage earned during the 56-day term.

Mistake 2: Ignoring the Maturity Date

Buying without checking when the bill matures can create a cash-flow problem
if the money is needed sooner.

Mistake 3: Forgetting the Next Step

At maturity, the proceeds become available according to the security’s
terms. Decide in advance whether the cash will be spent, saved or reinvested.

A Simple 8-Week Treasury Bill Example

Suppose an investor buys a hypothetical $1,000 face-value
8-week Treasury bill for $992.50. If the investor holds the
bill until maturity and receives $1,000, the gross difference is
$7.50.

WHAT THIS EXAMPLE SHOWS

The investor does not receive $7.50 as a monthly payment. It represents the
difference between the hypothetical purchase price and the maturity value.
The actual auction price will determine the real return.

This example also shows why comparing the purchase price with the maturity value
is useful. Your actual result can differ because Treasury auction prices and
yields change over time.

Who Should Choose 8-Week T-Bills?

An 8-week Treasury bill may fit investors who have money they
expect to leave invested for about 56 days and who understand the bill’s
maturity and pricing. The main consideration is whether the investment timeline
matches when the cash may be needed.

A Defined Cash Timeline

It can be considered when funds have a known short-term purpose and the
56-day maturity date fits that timeline.

Short-Term Treasury Exposure

It provides exposure to a short-term U.S. Treasury security rather than
keeping the money in a deposit account.

Investors Planning Ahead

If the money is still available for investment after maturity, the proceeds
can be used for another Treasury security or another financial goal.

Investors Who May Need More Access

If you may need the money before maturity, remember that selling the bill
before maturity exposes you to its secondary-market price.

The key check:
Put the expected cash-need date next to the Treasury bill’s maturity date.
If the dates do not work together, examine an option with different access
or maturity terms before committing the money.

8-Week Treasury Bills: Frequently Asked Questions

1. What is an 8-week Treasury bill?

An 8-week Treasury bill is a short-term U.S. Treasury security with a
56-day term. Treasury auction documents identify the security as a
“56-Day Bill” with an 8-week description.

2. How do 8-week Treasury bills make money?

Treasury bills are generally purchased below face value. If held to
maturity, the difference between the purchase price and the amount
received at maturity represents the gross interest.

3. Do 8-week T-bills pay monthly interest?

No. Treasury bills do not make periodic coupon payments. The return is
generally reflected in the difference between the discounted purchase
price and the maturity value.

4. How much money do I need to buy an 8-week T-bill?

Current Treasury auction offerings generally specify a minimum bid of
$100 and multiples of $100. Always check the terms of the specific
offering before placing an order.

5. Can I sell an 8-week Treasury bill before maturity?

Yes. Treasury bills can be sold in the secondary market before maturity,
but the market price can be higher or lower than the price you paid.
Selling early therefore creates market-price risk.

6. Are 8-week Treasury bills taxable?

Yes. Treasury bill interest is subject to federal income tax but is
exempt from state and local income taxes. For most individual cash-method
taxpayers, the IRS generally treats the bill’s interest as reportable
when the bill is paid at maturity.

7. What happens when an 8-week T-bill matures?

At maturity, the Treasury pays the amount due under the security’s
terms. You can then use the proceeds for your planned expense, keep
the money elsewhere or consider another Treasury investment.

8. Can I reinvest an 8-week Treasury bill?

Yes. You can use the maturity proceeds to purchase another Treasury
security. If you reinvest, remember that the next auction can have a
different yield from the bill you just held.

FAQ TAKEAWAY

The basic cycle is simple: buy at the auction → hold for 56 days →
receive the maturity amount → decide what to do with the proceeds.
The details that deserve the most attention are the purchase price,
maturity date, tax treatment and what happens if you need the money early.

Final Verdict: Is an 8-Week Treasury Bill Right for Your Cash?

An 8-week Treasury bill is a short-term U.S. Treasury security
with a clearly defined 56-day maturity. It is generally purchased
below face value, with the difference between the purchase price and maturity
value representing the gross interest when held to maturity.

The main question is whether that 56-day timeline matches your cash plans.
If you expect to need the money around the maturity date, the fixed term gives
you a specific point at which the investment ends. If you need unrestricted
access before then, remember that selling a Treasury bill before maturity can
expose you to changes in its market price.

THE BOTTOM LINE

Before buying, check the auction terms, purchase price, maturity date,
tax treatment and your need for liquidity. If you plan to reinvest,
remember that the next 8-week Treasury bill can have a different auction yield.

For a broader look at Treasury securities and their different maturities,
continue with our

complete Treasury bills guide
.

Related Resources & Authority Sources

If you want to go deeper after reading this guide, these resources cover
Treasury bill mechanics, pricing, comparisons and tax rules. The internal
guides help you explore related short-term investing topics, while the
government sources provide primary information about Treasury securities
and taxation.

FinanceInvestment Guides

Treasury Bills Explained

How Do Treasury Bills Work?

How Do Treasury Bills Make Money?

Treasury Bills vs Treasury Bonds

CD vs Treasury Bills

Money Market Account vs Treasury

Official Sources

U.S. Treasury — Marketable Securities

TreasuryDirect — Understanding Treasury Pricing

IRS Publication 550 — Investment Income and Expenses

SOURCE CHECK

Use TreasuryDirect for Treasury security terms and pricing information,
and the IRS for federal tax rules. Auction results and Treasury rates can
change, so check the latest official information before making an investment.

FINANCEINVESTMENT

Have a Money Question? Keep Exploring.

Understanding an 8-week Treasury bill is easier when you look beyond the
headline yield. Keep checking the maturity date, purchase price, tax impact
and what you plan to do with the money after 56 days.

📩 Get in Touch With FinanceInvestment

Have a Treasury bill, savings or investing question you want us to cover?
Send us a message.

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Treasury Bills Explained

Treasury Bills vs Treasury Bonds

September 16, 2026

4-Week Treasury Bills Explained: Complete 2026 Guide

4-Week Treasury Bills Explained: A Complete Beginner Guide for 2026

Subhash Rukade

Founder, FinanceInvestment

TREASURY GUIDE

BEGINNER GUIDE

Last Updated

September 16, 2026

Reading Time

About 14 minutes

START HERE

4-Week Treasury Bills Explained: Why This Short Maturity Matters

4-Week Treasury Bills A 4-week Treasury bill may look simple: you buy a short-term U.S. government security and receive its value at maturity. But the way you earn money is different from a savings account or a certificate of deposit. The bill is generally purchased at a price below its face value, and the difference represents the interest you earn.

That short 28-day maturity is the part worth paying attention to. It can make a 4-week T-bill useful for money that has a known near-term purpose, while also giving investors a chance to reinvest after maturity. If you’re new to Treasury securities, start with our

Treasury Bills Explained guide

before going deeper.

What You’ll Learn

01 — How It Works

See how the auction, purchase price and 28-day maturity fit together.

02 — What You Earn

Learn why a T-bill’s return is tied to its purchase price and face value.

03 — Taxes & Risks

Understand federal taxes, state and local tax treatment, and early-sale considerations.

04 — Buying & Reinvesting

See where you can buy a 4-week bill and what happens when it matures.

QUICK ANSWER

How Do 4-Week Treasury Bills Work?

A 4-week Treasury bill is a short-term U.S. government security that matures in 28 days. Instead of paying a regular coupon, it is generally bought for less than its face value and redeemed at face value when it matures. The difference between the purchase price and the amount received at maturity represents the bill’s interest.

Key Takeaways

28-Day Maturity
The standard 4-week bill matures after 28 days.

No Regular Coupon
Your return generally comes from the difference between the purchase price and face value.

Short Holding Period
The short maturity can suit money with a near-term purpose.

Taxes Matter
Treasury interest is generally subject to federal income tax but exempt from state and local income taxes.

Reinvestment Is a Choice
After maturity, you can use the proceeds or consider buying another bill.

Rates Can Change
A future 4-week bill may have a different yield, so today’s return should not be assumed for every rollover.

Bottom line:
A 4-week Treasury bill is built around a short 28-day maturity. The key is to look beyond the quoted rate and understand the purchase price, maturity value, taxes and what you plan to do with the money afterward.

Table of Contents

4-Week Treasury Bills at a Glance

Maturity

28 days

Minimum

$100

Interest Style

Discount to face value

Typical Use

Short-term cash goals

Quick Fact	What It Means
4-week term	The bill is scheduled to mature 28 days after its issue date.
No periodic coupon	You do not receive monthly or quarterly interest payments.
Maturity value	At maturity, the Treasury pays the bill’s face value under its terms.
Reinvestment	After maturity, you can use the proceeds or buy another Treasury security.

QUICK TAKE:
The defining feature of a 4-week Treasury bill is its short 28-day maturity. Its return comes from the relationship between the purchase price and face value, rather than from a regular coupon payment. That makes the timing of your cash need just as important as the quoted yield.

4-Week Treasury Bills: A Complete Beginner Guide

4-Week Treasury Bills If you have never bought a Treasury bill, the first thing to understand is that a 4-week Treasury bill is a short-term U.S. government debt security. The Treasury issues it with a fixed maturity of 28 days. You are not opening a bank account or depositing money with the government. You are buying a marketable Treasury security.

The way the return works is also different from a typical savings account. A 4-week T-bill is generally sold at a price below its face value. When it matures, the Treasury pays the face value. The gap between those amounts is the interest earned on the bill.

What Does “4-Week” Actually Mean?

The name refers to the bill’s term. A standard 4-week Treasury bill has a 28-day maturity. That short window can be useful when your goal is measured in weeks rather than years.

For example, someone setting aside money for a known expense about a month away may care more about the maturity date than about receiving periodic income. The bill is designed around that short timeline.

How the Money Moves

STEP 1

Buy the bill

You purchase it through an available Treasury auction or brokerage platform.

STEP 2

Wait 28 days

The security remains outstanding until its scheduled maturity date.

STEP 3

Receive face value

At maturity, the Treasury pays the bill’s face value under its terms.

One detail beginners often miss:
the quoted T-bill discount rate is not the same thing as simply subtracting a percentage from the amount you invest. The purchase price, face value, term and quoted yield all work together to determine the actual return.

How 4-Week Treasury Bills Work

A 4-week Treasury bill starts with a U.S. Treasury auction. Investors can buy newly issued bills through TreasuryDirect or through a bank or brokerage that offers Treasury securities. The bill has a 28-day term, so the maturity date is known when the security is issued.

Unlike a Treasury bond, a 4-week T-bill does not make scheduled interest payments during the holding period. Treasury bills are generally issued at a discount to face value. At maturity, the bill is redeemed at its face value under its terms. The difference between the purchase price and face value is the gross interest earned.

The 4-Week T-Bill Process

STEP 1

Review the auction

Check the available 4-week bill, auction schedule and purchase details.

STEP 2

Place your order

Buy through TreasuryDirect or an eligible bank or brokerage account.

STEP 3

Hold for 28 days

The bill remains outstanding until its scheduled maturity date.

STEP 4

Receive the maturity value

At maturity, the Treasury pays the bill’s face value according to its terms.

Simple Example: Where the Interest Comes From

Imagine a 4-week Treasury bill with a $10,000 face value that you purchase for $9,950. If you hold the bill until maturity, you receive $10,000 according to its terms. The $50 difference represents the gross interest on that example.

Keep this in mind:
The $50 example is illustrative only. Actual purchase prices, discount rates and investment yields vary by auction and market conditions. The discount amount should not be confused with the quoted annualized yield.

Benefits and Drawbacks of 4-Week Treasury Bills

A 4-week Treasury bill can be useful for a specific type of cash: money you can leave untouched for a short period. But the short maturity also creates trade-offs. Here is what to consider before buying one.

✓ Benefits

Very short maturity:
Your money is scheduled to reach maturity after 28 days.
U.S. government security:
A Treasury bill is a direct obligation of the U.S. government, rather than a bank deposit.
No periodic coupon:
You do not have to wait for monthly or quarterly interest payments.
Tax advantage at the state level:
Treasury interest is generally exempt from state and local income taxes, although federal income tax generally applies.

✕ Drawbacks

No regular income stream:
The return is built into the purchase price rather than paid as a recurring coupon.
Reinvestment risk:
After 28 days, a new bill may offer a different yield.
Cash is committed until maturity:
If you need the money sooner, selling before maturity may expose you to a different market price.
Inflation can reduce real value:
Even when you earn interest, rising prices can reduce what that money can buy.

The key trade-off:
A 4-week T-bill gives you a short, defined maturity, but that also means you must decide what to do with the money again relatively soon. For a longer goal, repeatedly reinvesting may produce a different result as future Treasury yields change.

4-Week T-Bills vs Other Short-Term Options

A 4-week Treasury bill is only one way to hold money for a short period. A money market account, high-yield savings account, CD, or another Treasury bill can work differently. The right comparison depends on when you need the money, how much access you want, and how the return is structured.

Option	Typical Structure	Access to Money	Insurance / Guarantee
4-Week T-Bill	28-day Treasury security; generally bought below face value	Primarily at maturity; can be sold earlier in the secondary market	Not FDIC-insured; direct U.S. government obligation
8-Week T-Bill	Short-term Treasury security with an 8-week maturity	Primarily at maturity; earlier sale is possible through the market	Not FDIC-insured; direct U.S. government obligation
Money Market Account	Bank deposit account that generally earns interest	Generally easier access than a fixed-maturity security	FDIC insurance may apply at an eligible insured bank, subject to limits
High-Yield Savings Account	Bank deposit account with a variable interest rate	Generally designed for easier withdrawals	FDIC insurance may apply at an eligible insured bank, subject to limits
CD	Bank deposit held for a specified term, usually at a stated rate	Early withdrawal may involve account-specific restrictions or penalties	FDIC insurance may apply at an eligible insured bank, subject to limits

When the Timeline Matters Most

If you have a known date for a future expense, the 28-day maturity of a 4-week T-bill gives you a defined schedule. A deposit account may offer easier access, while a longer Treasury bill or CD may extend the holding period.

One Detail to Watch

Treasury bills and deposit accounts quote returns differently. A T-bill’s annualized yield does not mean you earn that full percentage in 28 days. Compare the actual purchase price, maturity value, holding period, and access rules.

Research tip:
If you are comparing a Treasury bill with a money market account or CD, look beyond the headline rate. Your decision can change based on liquidity, maturity date, taxes, deposit insurance, and what you plan to do with the money afterward.

Costs, Taxes, Risks & Expert Tips for 4-Week T-Bills

A 4-week Treasury bill has a simple structure, but the details can affect your actual return. Look at the purchase price, maturity value, taxes, and what could happen if your plans change before the 28-day term ends.

Costs

TreasuryDirect charges no purchase fee or commission for buying marketable Treasury securities. You still pay the purchase price of the security. A brokerage may have its own pricing or charges.

Taxes

Treasury bill interest is subject to federal income tax but exempt from state and local income taxes. For a bill held to maturity, the difference between the purchase price and face value is generally treated as interest income.

Risks to Know

Reinvestment risk is important because the next 4-week bill may offer a different yield. Inflation can also reduce purchasing power. Selling before maturity exposes you to the current market price.

Expert Tips Before You Buy

Check the maturity date before focusing on the quoted annualized yield.
Compare the purchase price with the maturity value to see the dollar amount you could earn.
If you may need the money early, understand that a sale before maturity occurs at the market price.
Before reinvesting, compare the new yield rather than assuming it will match your previous bill.

Official sources:

TreasuryDirect

and

IRS Publication 550

provide additional information on Treasury purchases and tax treatment.

Common 4-Week T-Bill Mistakes and a Simple Real-Life Example

Most mistakes with 4-week Treasury bills are not complicated. They usually come from misunderstanding the quoted yield, maturity date, or what happens after the bill matures.

Mistake #1: Treating the Annualized Yield as 28-Day Interest

A quoted T-bill investment rate is annualized. You do not simply earn that percentage on your money in 28 days.

Mistake #2: Ignoring the Maturity Date

If the cash is needed for a bill, tuition payment, or other expense, check the actual maturity date rather than assuming the money will be available exactly four calendar weeks after purchase.

Mistake #3: Forgetting the Next Step

A maturing bill returns your money. If you want to keep the strategy going, you must decide whether to spend, hold, or reinvest the proceeds.

Real-Life Example: A $10,000 4-Week T-Bill

Suppose an investor buys a 4-week T-bill with a $10,000 face value for an illustrative purchase price of $9,950. If the investor holds it until maturity, the bill pays $10,000 according to its terms.

The $50 difference represents the gross interest in this simplified example. The investor should then consider federal taxes and decide what to do with the $10,000 proceeds.

Important:
The $9,950 purchase price and $50 return above are purely illustrative. Actual auction prices and investment rates change. The quoted annualized rate should not be confused with the dollar return over one 28-day holding period.

Who Should Choose 4-Week T-Bills?

A 4-week Treasury bill can make sense when you have money that does not need to be spent immediately but may be needed within a fairly short period. The key question is not simply how much risk you can tolerate. It is whether the 28-day maturity fits your cash-flow plans.

A 4-Week T-Bill May Fit If You:

Have a known short-term cash timeline.
Can leave the money invested until maturity.
Want direct exposure to a short-term U.S. Treasury security.
Are comfortable deciding what to do with the proceeds after 28 days.

Another Option May Fit Better If You:

Need unrestricted access to the cash.
Want a longer or more predictable investment period.
Prefer keeping emergency money in a readily accessible deposit account.
Do not want to manage repeated maturity and reinvestment decisions.

Bottom line:
A 4-week T-bill is primarily a short-term cash-management choice. Match the maturity date with your actual cash need, then compare the available yield, taxes, liquidity and reinvestment options.

8 Frequently Asked Questions About 4-Week Treasury Bills

1. What is a 4-week Treasury bill?

A 4-week Treasury bill is a short-term U.S. government debt security with a 28-day maturity. It is generally purchased below its face value and pays the face value at maturity.

2. How do 4-week T-bills make money?

The return generally comes from the difference between the purchase price and the bill’s face value at maturity. There is no regular monthly or quarterly coupon payment.

3. How much does a 4-week T-bill cost?

The purchase price depends on the auction result. Treasury bills are generally issued at a discount, so the amount paid can be less than the face value received at maturity.

4. Are 4-week Treasury bills taxable?

Yes. Treasury bill interest is subject to federal income tax but is exempt from state and local income taxes. For a typical bill held to maturity, the discount is generally reported as interest income.

5. Can I sell a 4-week T-bill before maturity?

Treasury bills are marketable securities, so they can generally be sold before maturity through a broker or other available secondary-market channel. The market price may be different from your purchase price.

6. Can I reinvest a 4-week T-bill after it matures?

Yes. You can use the maturity proceeds to purchase another Treasury security. The new bill will have its own auction price and yield, so the future return can differ from the previous bill.

7. Are 4-week T-bills FDIC insured?

No. A Treasury bill is not a bank deposit, so it is not covered by FDIC deposit insurance. It is a direct debt obligation of the U.S. government.

8. Is a 4-week T-bill right for emergency savings?

It depends on how quickly you may need the money. An emergency fund generally needs convenient access, while a 4-week T-bill has a defined maturity and can involve market-price risk if sold before maturity.

Quick reminder:
The quoted T-bill yield is annualized. It should not be interpreted as the amount you will earn over only 28 days.

Final Verdict: Are 4-Week Treasury Bills Worth Considering?

A 4-week Treasury bill is a simple short-term Treasury security with a defined 28-day maturity. It generally earns money through the difference between its purchase price and face value at maturity rather than through regular interest payments. Current Treasury offering documents identify the 4-week bill as a 28-day security.

The main question is what you need the money to do. If your cash can remain invested for the full term, the short maturity may fit a defined near-term cash plan. If you need frequent access, a deposit account may offer a different level of convenience.

The Bottom Line

Before buying, check the auction price, maturity date, federal tax treatment, liquidity needs and your reinvestment plan. A 4-week T-bill can be evaluated alongside savings accounts, money market accounts and CDs based on those factors—not simply by looking at the headline annualized yield.

Treasury bills are direct U.S. government obligations, while bank savings products are deposits with different access and insurance rules. Treasury interest is subject to federal income tax but exempt from state and local income taxes.

Related Resources & Authority Sources

If you want to keep researching short-term Treasury investments, these FinanceInvestment guides can help you compare Treasury bills with other options and understand how the pieces fit together.

Treasury Bills Explained: Complete Guide

How Do Treasury Bills Work?

How Do Treasury Bills Make Money?

Treasury Bills vs Treasury Bonds

CD vs Treasury Bills

Money Market Account vs Treasury

Official Sources

TreasuryDirect — Marketable Securities

— official information on Treasury bills, notes and bonds.

TreasuryDirect — Understanding Pricing

— explains how Treasury bill pricing relates to face value.

IRS Publication 550 — Investment Income and Expenses

— covers federal taxation of Treasury bill interest.

Have a Money Question? Keep Exploring.

A 4-week Treasury bill is one part of short-term cash planning. If you are comparing Treasury bills with savings accounts, CDs, or money market options, keep researching the details that matter to your own timeline, access needs, taxes, and investment goals.

📩 Get in Touch With FinanceInvestment

Have a question, topic suggestion, or feedback about this guide?

Email FinanceInvestment

Continue Your Research

Treasury Bills Explained: Complete Guide

Treasury Bills vs Treasury Bonds

September 16, 2026

Treasury Bills vs Treasury Bonds: What’s the Difference?

Subhash Rukade

Founder, FinanceInvestment

TREASURY COMPARISON

BEGINNER GUIDE

Last Updated

September 16, 2026

Reading Time

About 14 minutes

Treasury Comparison Guide

Treasury Bills vs Treasury Bonds: The Difference Is More Than the Maturity Date

Treasury Bills vs Treasury Bonds Treasury bills and Treasury bonds are both U.S. government debt securities, but they serve very different time horizons. Treasury bills are designed for shorter periods, while Treasury bonds are built for much longer commitments. That difference can affect how often you receive income, how sensitive your investment is to changing interest rates, and how easily the investment fits a near-term or long-term goal. 1

So, which one makes more sense? There is no universal winner. A person saving money for a goal next year may have a very different need from someone building a long-term income stream. This guide breaks down the differences in plain English so you can compare the two without getting lost in Treasury terminology.

What You’ll Learn

By the end of this guide, you’ll be able to see where Treasury bills and Treasury bonds fit—and where they don’t.

01 — Maturity

See how short-term bills differ from long-term Treasury bonds.

02 — Cash Flow

Understand how the two securities generate returns and when payments occur.

03 — Risk

Compare interest-rate exposure, especially if you might sell before maturity.

04 — Investor Fit

Match each option with practical goals such as cash preservation, income or long-term planning.

One useful starting point: if you want a broader beginner explanation of T-bills before comparing them with bonds, see our

Treasury Bills Explained guide
.

Quick Answer

Treasury Bills vs Treasury Bonds: Which Is Better?

Treasury bills are generally better suited to investors looking for a shorter maturity and a near-term place for cash. Treasury bonds are built for much longer holding periods and provide scheduled interest payments every six months. Neither is automatically better. Your choice depends on when you expect to need the money, whether you want periodic interest income, and how comfortable you are with price changes if you sell before maturity.

Key Takeaways

Short vs. Long Term

Treasury bills have maturities of one year or less, while Treasury bonds currently have 20- or 30-year terms.

Different Cash Flow

T-bills generally provide the return through the difference between their purchase price and face value at maturity. Bonds pay interest every six months.

Rate Risk Matters

Longer-term Treasury bonds generally have greater price sensitivity to changing interest rates than short-term bills.

Similar Tax Treatment

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

Bottom line: Start with your time horizon and cash-flow needs. A small difference in quoted yield may matter less than choosing a maturity that fits your financial goal.

Treasury Bills vs Treasury Bonds at a Glance

Feature	Treasury Bills	Treasury Bonds
Maturity	One year or less	20 or 30 years
Interest structure	Generally purchased at a discount and redeemed at face value at maturity; some auctions can price bills at par	Fixed interest payments are generally made every six months
Typical use	Short-term cash needs and near-term financial goals	Long-term income and fixed-income portfolio planning
Interest-rate sensitivity	Generally lower because of the shorter maturity	Generally higher because of the much longer maturity
Principal timing	Face value is paid at maturity	Face value is repaid at maturity

Quick Take

T-bills focus on shorter maturities, while Treasury bonds commit your money for much longer. Bills generally deliver their return through the difference between purchase price and face value at maturity. Bonds provide scheduled interest payments every six months. If you may sell before maturity, the bond’s longer duration can also make its market price more sensitive to interest-rate changes.

What Are Treasury Bills and Treasury Bonds?

Treasury Bills vs Treasury Bonds Treasury bills and Treasury bonds are both marketable debt securities issued by the U.S. Department of the Treasury. When you buy one, you hold a debt obligation of the U.S. government. The biggest difference is the length of time until maturity and the way each security provides its return.

Treasury Bills: Short-Term Treasury Debt

Treasury bills, commonly called T-bills, are short-term Treasury securities with maturities of one year or less. Current regular terms include 4, 8, 13, 17, 26 and 52 weeks.

T-bills do not make periodic coupon payments. They are generally sold at a discount to their face value, although an auction can also result in a price at par. At maturity, the Treasury pays the bill’s face value. The difference between the purchase price and the amount received at maturity represents the investor’s interest when the bill is bought at a discount.

Treasury Bonds: Long-Term Treasury Debt

Treasury bonds are long-term marketable Treasury securities. Current Treasury bonds have 20- or 30-year maturities. Unlike T-bills, they pay interest every six months during the life of the bond.

At maturity, the Treasury repays the bond’s face value. If you sell the bond before maturity, however, its market price may be higher or lower than what you paid. Changes in market interest rates are one reason longer-term Treasury bonds can experience meaningful price movements.

Where Treasury notes fit: Treasury notes fall between bills and bonds, with current maturities of 2, 3, 5, 7 and 10 years. Knowing this middle category helps put the short-term and long-term choices into perspective.

How Treasury Bills and Bonds Work

Treasury bills and Treasury bonds both represent U.S. government debt, but the cash flow works differently. You can buy newly issued securities through a Treasury auction or purchase existing marketable securities through a broker. The steps below focus on the basic ownership experience.

How a Treasury Bill Works

1. Select a maturity.

T-bills have maturities of one year or less.

2. Buy the bill.

At auction, a T-bill is generally issued at a discount to face value, although auction pricing can result in a price at par.

3. Hold until maturity.

T-bills do not make periodic coupon payments during their term.

4. Receive the maturity value.

At maturity, the Treasury pays the bill’s face value. When purchased below face value, the difference represents the interest earned.

How a Treasury Bond Works

1. Buy the bond.

Current Treasury bonds have 20- or 30-year maturities.

2. Receive scheduled interest.

Treasury bonds pay interest every six months. The coupon payment is based on the bond’s stated rate and face value.

3. Watch the market price if selling early.

A bond’s market price can rise or fall after purchase. Changes in market interest rates are a major factor.

4. Receive principal at maturity.

If held to maturity, the Treasury repays the bond’s face value according to its terms.

The practical difference: T-bills generally deliver their return through the purchase-price-to-face-value difference at maturity. Treasury bonds provide recurring interest payments and a much longer maturity. If you sell either security before maturity, the market price—not simply the original amount invested—determines what you receive from the sale.

Benefits and Drawbacks of Treasury Bills vs Treasury Bonds

Treasury bills and Treasury bonds can both add government-backed debt securities to a portfolio, but their trade-offs are different. Bills keep the maturity short. Bonds provide recurring interest over a much longer period. Here is where each option can help—and where it can fall short.

Treasury Bills

Benefits

Short maturities can fit near-term financial goals.
As U.S. government obligations, they generally have relatively low credit risk.
Interest is generally exempt from state and local income taxes.

Drawbacks

They do not provide regular coupon payments.
You may have to reinvest the proceeds when a bill matures.

Treasury Bonds

Benefits

Provide scheduled interest payments every six months.
Can provide predictable interest income for long-term planning.
Interest is generally exempt from state and local income taxes.

Drawbacks

The long maturity generally creates greater interest-rate sensitivity.
Selling before maturity can produce a gain or loss based on the market price.
Fixed interest payments can lose purchasing power when inflation rises.

The trade-off: T-bills reduce the length of the commitment but leave you with a reinvestment decision at maturity. Treasury bonds can provide regular income, but their long maturity brings more exposure to interest-rate changes and inflation’s effect on future purchasing power.

Treasury Bills vs Treasury Bonds: Side-by-Side Comparison

The biggest difference between Treasury bills and Treasury bonds is not simply the interest rate. It is the combination of maturity, cash-flow timing and price sensitivity. A short-term T-bill and a 30-year Treasury bond can both belong in a conservative portfolio, but they serve very different jobs.

Factor	Treasury Bills	Treasury Bonds
Maturity	One year or less	20 or 30 years
Cash flow	Generally no periodic coupon; return is realized through the purchase price and maturity value	Interest payments are made every six months, with face value repaid at maturity
Price sensitivity	Generally lower because the maturity is short	Generally higher because the maturity is much longer
Income pattern	Primarily realized at maturity	Recurring interest throughout the holding period
Typical fit	Near-term cash needs and shorter financial goals	Long-term income and fixed-income planning

Choose Bills When…

Your goal is relatively close, you want a shorter maturity, or you prefer not to commit money for decades.

Consider Bonds When…

You want scheduled interest income and can tolerate the longer maturity and greater price sensitivity.

One caution: Do not compare a T-bill’s discount rate directly with a Treasury bond’s coupon rate. They describe different parts of the investment. For a fair comparison, look at the relevant yield and match the security’s maturity and cash-flow pattern to your goal.

Costs, Taxes, Risks and Expert Tips

A Treasury security can look straightforward on the surface, but your actual result depends on the purchase price, taxes, maturity and what happens if you sell early. These details matter more than simply looking at a quoted rate.

Purchase Costs

TreasuryDirect charges no purchase fee or commission for Treasury securities bought through its platform. Banks and brokers may have their own pricing, spreads or transaction costs, so check the terms before buying.

Taxes

Interest from Treasury bills, notes and bonds is generally subject to federal income tax but exempt from state and local income taxes. Your federal reporting can depend on how and when the security is held, sold or matures.

Main Risks

If you hold a Treasury to maturity, its scheduled maturity value is the key reference point. If you sell earlier, market prices can move because of interest-rate changes and other market conditions. Inflation can also reduce the purchasing power of your returns.

Expert Tips Before You Buy

Match the maturity with the date you expect to need the money.
Compare yields on a consistent basis rather than comparing a T-bill discount rate with a bond coupon.
If buying a long-term bond, consider how you would react if its market price fell before you needed to sell.
Include federal taxes when estimating your after-tax return, even though Treasury interest generally avoids state and local income tax.

Common Mistakes and a Real-Life Example

Treasury bills and Treasury bonds can look simple until you compare the details. A few common mistakes can lead investors to choose a security that does not match the job their money needs to do.

4 Mistakes to Avoid

Comparing unlike rates:
A T-bill discount rate or investment yield should not be treated as the same measure as a Treasury bond’s coupon rate.
Choosing by yield alone:
A higher quoted return does not make a security better if its maturity does not fit your financial timeline.
Ignoring the sale price:
If you sell a marketable Treasury before maturity, its market price may be above or below your purchase price.
Assuming today’s rate will continue:
When a T-bill matures, a replacement bill may have a different yield.

Real-Life Example: Two Investors, $20,000

Sarah has $20,000 that she expects to need for a home-related expense in about eight months. She could consider an available T-bill maturity that ends before or around the date she expects to need the money, while keeping some timing flexibility.

Mark also has $20,000, but he does not expect to need it for many years. He values scheduled interest income and is comfortable with a much longer holding period. A Treasury bond may fit his objective better, provided he understands its longer maturity and greater sensitivity to market interest rates.

The lesson:
The amount invested is the same, but the timelines are different. Match the Treasury security to when you need the money and how you want the investment to pay you.

Who Should Choose Treasury Bills or Treasury Bonds?

There is no single winner in the Treasury bills vs Treasury bonds decision. The better fit depends on what the money is for and how long you can leave it invested.

Treasury Bills May Fit You If…

You expect to need the money within a relatively short period.
You prefer a shorter maturity rather than a decades-long commitment.
You are comfortable receiving the bill’s return primarily at maturity.
You want to build a short-term Treasury ladder with different maturity dates.

Treasury Bonds May Fit You If…

You have a long investment horizon.
You value scheduled interest payments every six months.
You can tolerate larger price movements if interest rates change.
You do not expect to need the invested principal soon.

A useful rule of thumb:
Start with your timeline, not the advertised rate. If the money has a near-term job, a shorter Treasury maturity may be easier to match. If the goal is long-term income and you can accept greater interest-rate sensitivity, Treasury bonds may deserve a closer look.

Frequently Asked Questions About Treasury Bills vs Treasury Bonds

1. What is the main difference between Treasury bills and Treasury bonds?

Treasury bills have maturities of one year or less, while current Treasury bonds have 20- or 30-year maturities. Bills generally provide their return at maturity, while bonds pay interest every six months.

2. Do Treasury bills pay interest every month?

No. T-bills do not make periodic coupon payments. They are generally issued below face value and redeemed at face value at maturity, with the difference representing the interest when purchased at a discount.

3. How often do Treasury bonds pay interest?

Treasury bonds generally pay interest every six months. The principal, or face value, is repaid at maturity according to the security’s terms.

4. Are Treasury bills or bonds better for short-term goals?

T-bills are generally more closely matched to short-term goals because their maturities are one year or less. The specific maturity should still match the date you expect to need the money.

5. Can I sell a Treasury bond before it matures?

Yes. Marketable Treasury bonds can generally be sold before maturity through the secondary market. The price may be higher or lower than your purchase price.

6. Are Treasury bills and bonds exempt from state taxes?

Generally, yes. Interest from Treasury securities is subject to federal income tax but is generally exempt from state and local income taxes.

7. Which has more interest-rate risk: T-bills or Treasury bonds?

Treasury bonds generally have greater interest-rate sensitivity because of their much longer maturities. That can produce larger price movements when market rates change.

8. Can I lose money on Treasury bills or Treasury bonds?

If you sell a marketable Treasury before maturity, its market price can be below what you paid, creating a loss. Holding an individual security to maturity follows its stated repayment terms, but inflation and opportunity cost can still affect the real value of the investment.

Remember: Treasury bills and Treasury bonds are both U.S. government debt securities, but their maturity, cash-flow structure and interest-rate sensitivity are very different.

Final Verdict

Treasury Bills vs Treasury Bonds: Which One Makes Sense for You?

There is no universal winner. Treasury bills can make more sense when you have a shorter time horizon and want a maturity that is relatively close to a planned cash need. Treasury bonds can make more sense when you have a long-term horizon and value scheduled interest payments every six months.

The Decision Comes Down to Three Questions

When will you need the money? Match the maturity to your timeline.
Do you want periodic income? Treasury bonds provide interest payments every six months.
Could you need to sell early? Longer-term bonds generally have greater price sensitivity when interest rates change.

Bottom line:
Don’t choose between T-bills and Treasury bonds simply because one quoted rate looks higher. Choose the security whose maturity and cash-flow pattern fit your goal. For a broader introduction to T-bills, read our

Treasury Bills Explained guide
.

Related Resources and Authority Sources

Treasury bills and bonds are only part of the broader fixed-income picture. These FinanceInvestment guides can help you compare nearby options, while the official sources below provide the rules and tax details.

More FinanceInvestment Guides

Official Sources

TreasuryDirect
— official information on marketable Treasury securities and purchasing.

Investor.gov
— SEC investor information on Treasury securities.

IRS Publication 550
— federal tax guidance for investment income.

Have a Money Question? Keep Exploring.

Choosing between Treasury bills and Treasury bonds is only one part of building a stronger cash and investment plan. Keep comparing maturity, income, taxes and risk before putting your money to work.

📩 Get in Touch With FinanceInvestment

Have a question, correction or topic you’d like us to cover?

Email FinanceInvestment

Continue Your Research

Treasury Bills Explained

•

CDs vs Treasury Bills

September 16, 2026

How Do Treasury Bills Make Money? Complete Guide 2026

How Do Treasury Bills Make Money? A Complete Beginner Guide

Subhash Rukade

Founder, FinanceInvestment

TREASURY BILLS

BEGINNER GUIDE

Last Updated

September 16, 2026

Reading Time

About 15 minutes

Treasury bills can look confusing at first. You buy a security, but you do not receive a monthly or quarterly interest payment. So, how do Treasury bills make money?

How Do Treasury Bills Make Money?

How Do Treasury Bills Make Money The basic idea is simple: a Treasury bill can be purchased for less than its face value and then redeemed for the full face value when it matures. That difference is your return. For example, if you pay $9,800 for a bill that pays $10,000 at maturity, the $200 difference is the gross return before taxes.

Your actual result depends on the bill’s purchase price, maturity period and annualized yield. The quoted discount rate is not always the same as the investment rate, so comparing T-bills with savings accounts or CDs requires looking at the right number.

This guide focuses on the money side of T-bills: where the return comes from, how the profit is calculated, how taxes affect it, and what happens when you reinvest the proceeds.

What You’ll Learn

01
How the T-bill discount creates your dollar profit.

02
How purchase price, maturity and yield work together.

03
How T-bill returns compare with savings accounts, CDs and money market accounts.

04
How federal taxes can change your after-tax return.

05
How reinvestment and T-bill ladders can turn short-term returns into an ongoing strategy.

How Do Treasury Bills Make Money? Quick Answer

Treasury bills make money for investors through the difference between the bill’s purchase price and its face value at maturity. For a bill bought below face value and held to maturity, that difference is the investor’s gross interest income.

For example, suppose a $10,000 face-value T-bill has a purchase price of $9,850. If you hold it until maturity, you receive $10,000. The $150 difference is your gross return before taxes and other applicable costs.

The return should not be judged only by the dollar difference. The bill’s maturity period matters, and Treasury reports both a discount rate and an investment rate. The investment rate is based on the purchase price and is the more useful figure for comparing a T-bill with other investments.

Key Takeaways

The basic return is the difference between what you pay and what you receive at maturity.
T-bills generally do not make periodic coupon payments; the return is paid at maturity.
A T-bill’s discount rate and investment rate are calculated differently.
Treasury bill interest is generally subject to federal income tax but exempt from state and local income taxes.
Reinvesting maturity proceeds can create a repeating T-bill investment strategy.

At a Glance: How T-Bills Make Money

Treasury bills generally make money for investors through the difference between the price paid and the amount received at maturity. The return is built into the purchase price rather than paid through regular coupon payments.

Return Factor	What Happens	Effect on Your Return
Purchase price	You pay the price determined at the auction.	Sets your initial investment.
Face value	The Treasury pays the bill’s face value at maturity.	The difference from your purchase price is the gross return.
Maturity	The bill reaches its scheduled maturity date.	Determines how long your money was invested.
Investment rate	The return is expressed on an annualized basis.	Makes T-bill returns easier to compare.
Reinvestment	Maturity proceeds can be used to purchase another T-bill.	Can extend the strategy beyond one maturity.

QUICK TAKE

Think of a T-bill return as the gap between the purchase price and the amount received at maturity. The investment rate then puts that return into an annualized format for easier comparison.

Where Does the Treasury Bill Return Come From?

How Do Treasury Bills Make Money The easiest way to understand how Treasury bills make money is to stop thinking of them like a savings account. You usually do not receive a separate interest deposit every month. Instead, the return is built into the price you pay for the bill.

1. You Pay a Price for a Larger Face Value

Treasury bills have a stated face value, such as $1,000. At auction, a bill may be issued below that amount. Suppose your purchase price is $985 for a $1,000 face-value bill. If you hold it until maturity, the Treasury pays $1,000. The $15 difference is your gross return.

Simple T-Bill Return Formula

Gross return = Amount received at maturity − Purchase price

Example: $1,000 − $985 = $15 gross return.

2. The Time Period Changes the Meaning of the Return

A $15 gain does not tell you much by itself. A $15 return earned over a few weeks is different from $15 earned over a full year. That is why Treasury bills also have an annualized investment rate. It gives investors a more useful way to compare bills with other short-term investments.

3. Discount Rate and Investment Rate Are Not the Same

This is one of the easiest T-bill details to miss. The discount rate is calculated using the bill’s face value and a 360-day basis. The investment rate uses the purchase price and a 365- or 366-day basis. Because the calculations use different inputs and conventions, the two percentages can differ.

For a beginner, the practical takeaway is simple: first find the actual purchase price and maturity value. Then use the investment rate when comparing the T-bill’s annualized return with other investments.

How T-Bill Profit Works Step by Step

Once you know that the return comes from the purchase price and maturity value, the calculation becomes much easier. Here is the process an investor can follow.

Step 1: Choose the T-Bill Maturity

Treasury bills are short-term securities with maturities of one year or less. Common terms include 4, 8, 13, 17, 26 and 52 weeks. The maturity you choose determines how long your money is committed to the bill if you hold it until maturity.

Step 2: Check the Auction Price

At auction, Treasury bills are generally sold at a discount to face value, although they can also be issued at par. Your purchase price is the amount used to calculate your actual dollar investment.

Step 3: Calculate the Dollar Return

Illustrative example

Face value: $10,000
Purchase price: $9,900
Gross return at maturity: $100

Calculation: $10,000 − $9,900 = $100

Step 4: Look at the Annualized Investment Rate

The $100 profit above is a dollar amount, not an annual yield. Treasury’s investment rate annualizes the return using the purchase price and the actual term. This makes the T-bill easier to compare with other short-term investments.

Step 5: Account for Taxes and Reinvestment

Treasury bill interest is generally subject to federal income tax but exempt from state and local income taxes. After maturity, you can take the proceeds as cash or use them to purchase another T-bill. Reinvesting can extend the strategy, but future returns will depend on the rates available at each new purchase.

Benefits and Drawbacks of T-Bill Returns

Treasury bills can be useful for investors who want a relatively conservative place for short-term cash. But the return comes with trade-offs. The right choice depends on what you need the money to do and when you may need it.

Benefits

Backed by the U.S. government, so credit risk is generally low.
Short maturities can make T-bills useful for managing near-term cash.
Interest is generally exempt from state and local income taxes.
TreasuryDirect allows individuals to buy T-bills without a purchase fee.

Drawbacks

Your return is tied to the price and rate available when you buy.
Selling before maturity can produce a gain or loss because market prices change.
T-bills do not provide periodic coupon payments.
Reinvestment carries rate risk because future T-bill yields may be different.

Bottom line: T-bills can offer a predictable maturity value when held to maturity, but that does not make them the best option for every cash goal. Compare the yield, maturity date, taxes and access to your money before investing.

T-Bill Return vs. Savings, CDs and Money Market Accounts

A T-bill can look similar to other short-term cash options because all four can be used for relatively conservative goals. The way you earn money, however, is different. The best choice depends on the return available, access to your cash, taxes and how long you can leave the money invested.

Option	How You Earn	Access	Key Tax Point
T-Bills	Usually through the difference between purchase price and maturity value.	Limited until maturity unless sold.	Federal tax generally applies; state/local exemption.
Savings account	Interest paid by the bank.	Generally easy access.	Interest generally taxable federally and by applicable state/local rules.
CD	Interest paid according to the CD’s terms.	Early withdrawal may involve a penalty.	Interest generally taxable as income.
Money market account	Interest paid by the bank or credit union.	Generally more accessible than a T-bill held to maturity.	Interest generally taxable as income.

QUICK TAKE: T-bills stand out when federal Treasury credit quality and state/local tax treatment matter. Savings and money market accounts generally offer easier access, while CDs can provide a fixed rate for a chosen term. Compare the actual annualized yield, liquidity and tax impact rather than choosing based on the headline rate alone.

T-Bill Costs, Taxes, Risks and Expert Tips

A T-bill’s quoted rate does not tell the whole story. Your actual result depends on the purchase price, holding period, taxes and what happens if you sell before maturity.

Costs

TreasuryDirect does not charge a fee to buy marketable Treasury securities through the platform. A bank or brokerage may have its own fees, commissions or pricing differences, so check the firm’s terms before purchasing.

Taxes

Treasury bill interest is generally subject to federal income tax but exempt from state and local income taxes. Treasury interest is generally reported in Box 3 of Form 1099-INT. Tax reporting can become more complicated if you sell a T-bill before maturity.

Risks and Practical Tips

Selling before maturity can expose you to changes in the market price.
Inflation can reduce the purchasing power of your return.
Reinvestment rates can change when your T-bill matures.
Compare the investment rate, maturity date and after-tax return before investing.

Expert tip: If you have a known future cash need, choose a maturity that fits that date. A slightly different yield may be worth accepting if it better matches when you need the money.

Common T-Bill Mistakes and a Real-Life Profit Example

Most T-bill mistakes are not about the security itself. They happen when investors misunderstand the quoted rate, maturity date or amount they will actually earn.

Mistakes to Avoid

Confusing the discount rate with your investment return. They use different calculation methods.
Ignoring the maturity date. A T-bill may have an attractive annualized rate but still may not fit your cash timeline.
Assuming the quoted rate is guaranteed forever. A new T-bill can have a different rate when you reinvest.
Forgetting taxes. Federal income tax generally applies even though state and local income taxes generally do not.

Illustrative Profit Example

Suppose you buy a $10,000 face-value T-bill for $9,900.

If you hold it until maturity, you receive $10,000. Your gross dollar return is therefore $100.

$10,000 maturity value − $9,900 purchase price = $100 gross return.

That $100 is not automatically the annual yield. The actual annualized return depends on the bill’s term and purchase price. After federal taxes, your net result may be lower. If you reinvest the $10,000, the next T-bill’s rate will depend on market conditions at that time.

Who Should Choose T-Bills for Income?

T-bills can make sense for investors who have money they can leave invested until a known maturity date. They may also suit people looking for short-term Treasury exposure rather than relying on a single bank deposit or corporate issuer.

T-Bills May Fit

Investors with a defined short-term cash goal
Retirees planning for upcoming expenses
Investors who value U.S. Treasury credit quality

Consider Other Options

You need immediate, unrestricted cash access
You want long-term growth from your investment
You are choosing only by the highest advertised rate

Bottom line: A T-bill is most useful when its maturity date, expected return and tax treatment line up with your cash needs.

Frequently Asked Questions About T-Bill Returns

1. How do Treasury bills make money?

For a T-bill purchased below face value and held to maturity, the gross return generally comes from the difference between the purchase price and the face value paid at maturity.

2. Do T-bills pay monthly interest?

No. T-bills generally do not make periodic coupon payments. For a bill issued at a discount, the return is built into the purchase price and realized when the bill matures.

3. Is the T-bill discount rate the same as the investment rate?

No. They use different calculation methods and day-count conventions. The investment rate is based on the purchase price and is useful for comparing annualized T-bill returns.

4. What happens when a T-bill matures?

If you hold the bill until maturity, the Treasury pays its face value. You can keep the proceeds or use them to purchase another T-bill.

5. Are T-bill returns taxable?

Generally, yes. Interest from Treasury bills is subject to federal income tax but exempt from state and local income taxes. Specific tax reporting can vary if you sell before maturity.

6. Can I sell a T-bill before maturity?

Yes. T-bills are marketable securities and can be sold before maturity through the secondary market. The selling price can be above or below your purchase price.

7. Can I reinvest T-bill proceeds?

Yes. After maturity, you can use the proceeds to buy another T-bill. The new bill will have the rate available when you make the new investment.

8. Are T-bills a good way to earn money?

They can be useful for short-term goals when the maturity, expected return, tax treatment and liquidity fit your situation. They are not a substitute for a diversified long-term investment portfolio.

Final Verdict: How Do Treasury Bills Make Money?

How do Treasury bills make money? For a T-bill issued below face value and held to maturity, the basic return is the difference between what you paid and the face value you receive. The investment rate puts that return into an annualized form, making it easier to compare with other short-term investments.

T-bills can be a useful option for money with a defined short-term purpose. They offer exposure to U.S. Treasury obligations, and Treasury interest is generally subject to federal income tax but exempt from state and local income taxes.

Before buying, look beyond the headline rate.

Check the purchase price, investment rate, maturity date, after-tax return and access to your money. Those details tell you much more than a quoted percentage alone.

If your goal is short-term cash management and the maturity fits your timeline, a T-bill may deserve a place in your strategy. If you need unrestricted access to cash or are seeking long-term growth, compare other options before deciding.

Related Resources and Authority Sources

Ready to go deeper? These resources can help you understand T-bills, compare them with other short-term choices, and verify important pricing and tax details before investing.

Continue Your Research

Treasury Bills Explained

— a broader beginner guide covering T-bill rates, buying, taxes and risks.
CDs vs. Treasury Bills

— compare how CDs and T-bills generate returns and differ in access and taxes.
Money Market Account vs. Treasury

— compare T-bills with a more accessible cash-management option.

Official Sources

For current T-bill terms and purchase information, visit

TreasuryDirect
.
For federal tax guidance, see

IRS Publication 550
.
These official sources are useful for checking details that can change over time.

Have a Money Question? Keep Exploring.

Now you know where a T-bill’s return comes from, how the purchase price affects your profit, and why the investment rate matters. The next step is to compare that return with the options that fit your own cash needs.

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Treasury Bills Explained

CDs vs. Treasury Bills

September 16, 2026

Category: Investing

26-Week Treasury Bills Explained: Complete 2026 Guide

26-Week Treasury Bills Explained: A Complete Beginner Guide for 2026

A Six-Month Cash Plan With a Clear Finish Line

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Costs and Taxes

Risks to Keep in Mind

Common Mistakes and a Real-Life Example

Common Mistakes to Avoid

Real-Life Example: A $10,000 Face-Value Bill

Who Should Choose 26-Week T-Bills?

A 26-Week T-Bill May Fit If You:

Consider Another Cash Option If:

Frequently Asked Questions About 26-Week Treasury Bills

1. What is a 26-week Treasury bill?

2. How does a 26-week T-bill make money?

3. What is the minimum investment?

4. Do 26-week Treasury bills pay monthly interest?

5. Are 26-week Treasury bills taxable?

6. Can I sell a 26-week T-bill before maturity?

7. Is a 26-week T-bill the same as a 6-month CD?

8. What happens when a 26-week T-bill matures?

Final Verdict: Is a 26-Week Treasury Bill Right for Your Cash?

Related Resources and Authority Sources

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What Is a 13-Week Treasury Bill?

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13-Week T-Bills at a Glance

Complete Beginner Guide to 13-Week Treasury Bills

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How 13-Week Treasury Bills Work

The 91-Day Process

Benefits and Drawbacks of 13-Week Treasury Bills

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Drawbacks

13-Week T-Bills vs. Other Short-Term Options

Costs, Taxes, Risks, and Expert Tips

Costs and Taxes

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A 13-Week T-Bill May Fit If You:

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