Understanding Pricing and Interest Rates — TreasuryDirect (2024)

This page explains pricing and interest rates for the five different Treasury marketable securities.

For information on recent auctions, see Results of recent auctions

Bills

Bills are short-term securities that mature in one year or less. They are sold at face value (also called par value) or at a discount. When they mature, we pay you the face value.

The difference between the face value and the discounted price you pay is "interest."

To see what the purchase price will be for a particular discount rate, use the formula:

  • Price = Face value (1 – (discount rate x time)/360)

Example:

  • A $1,000 26-week bill sells at auction for a discount rate of 0.145%.
    • Price = 1000 (1 – (.00145 x 182)/360) = $999.27
  • The formula shows that the bill sells for $999.27, giving you a discount of $0.73.
    When you get $1,000 after 26 weeks, you have earned $0.73 in "interest."

Bonds and Notes

Bonds are long-term securities that mature in 20 or 30 years.

Notes are relatively short or medium-term securities that mature in 2, 3, 5, 7, or 10 years.

Both bonds and notes pay interest every six months. The interest rate for a particular security is set at the auction.

The price for a bond or a note may be the face value (also called par value) or may be more or less than the face value. The price depends on the yield to maturity and the interest rate.

If the yield to maturity is the price of the bond or note will be
greater than the interest rate less than par value
equal to the interest rate par value
less than the interest rate more than par value

The "yield to maturity" is the annual rate of return on the security.

Here are examples from recent auctions:

Type of security Time to maturity High yield at auction Interest rate set at auction Price
Bond 20 year 1.850% 1.750% 98.336995
Note 7 year 1.461% 1.375% 99.429922

In both examples, the yield is higher than the interest rate. Therefore, the price was lower than par value.

During the life of the bond or note, you earn interest at the set rate on the par value of the bond or note. The interest rate set at auction will never be less than 0.125%.

If you still own the bond after 20 years or the note after seven years, you get back the face value of the security. That means you will have also earned $1.66 for every $100 par value of your bond and $0.57 for every $100 par value of your note.

TIPS

Treasury Inflation-Protected Securities (TIPS) are available both as medium and long-term securities. They mature in 5, 10, or 30 years.

Like bonds and notes, the price and interest rate are determined at the auction.

The interesting aspect of TIPS, that differs from bonds and notes, is that the principal goes up and down with inflation and deflation. While the interest rate is fixed, the amount of interest you get every six months may vary due to any change in the principal.

To calculate the inflation-adjusted interest you will get, near the time your interest payment is due, follow these steps:

  1. Locate your TIPS on the TIPS Inflation Index Ratios page.
  2. Follow the link and locate the Index Ratio that corresponds to the interest payment date for your security.
  3. Multiply your original principal amount by the Index Ratio. (this is your inflation-adjusted principal).
  4. Now, multiply your inflation-adjusted principal by half the stated interest (coupon) rate on your security.

The resulting number is your semi-annual interest payment.

Example:

  • You have $1,000 invested in a 5-year TIPS with an interest rate of 0.125%.
    You will get an interest payment next week and want to know how much it will be.
  • When you look up the Index Ratio for your TIPS, you see it is 1.01165.
    Multiplying your $1,000 by 1.01165, you get your adjusted principal: $1,011.65.
  • For this six-month payment, you get half of 0.125% (your annual interest rate), which is 0.0625%.
  • Turn the percent into a decimal by moving the decimal point two places to the left: 0.000625.
  • Now, multiply the adjusted principal by the half-year interest rate: In this example, multiplying $1,011.65 times 0.000625 gives you your expected interest payment: $0.63.

Floating Rate Notes (FRNs)

FRNs are relatively short-term investments that mature in two years.

The price of an FRN is determined at auction. The price may be greater than, less than, or equal to the FRN's par amount.

The interest rate of an FRN changes, or “floats,” over the life of the FRN.

The interest rate is the sum of two parts: an index rate and a spread.

  • Index rate - The index rate of your FRN is tied to the highest accepted discount rate of the most recent 13-week Treasury bill. We auction the 13-week bill every week, so the index rate of an FRN is reset every week. You can see the daily index for current FRNs.
  • Spread - The spread is a rate we apply to the index rate. The spread stays the same for the life of an FRN. The spread is determined at auction when the FRN is first offered. The spread is the highest accepted discount margin in that auction.

The spread plus the index rate equals the interest rate.

We apply the interest rate to an FRN's par amount daily. The aggregate interest earned to date on an FRN accumulates every day.

For more detailed formulas and useful tables

See The Code of Federal Regulations, §356.20, Appendix B

Understanding Pricing and Interest Rates — TreasuryDirect (2024)

FAQs

Understanding Pricing and Interest Rates — TreasuryDirect? ›

Both bonds and notes pay interest every six months. The interest rate for a particular security is set at the auction. The price for a bond or a note may be the face value (also called par value) or may be more or less than the face value. The price depends on the yield to maturity and the interest rate.

How do you read Treasury bond prices? ›

Calculating a Bond's Dollar Price

A bond is simply a loan, after all, and the principal balance, or par value, is the loan amount. So, if a bond is quoted at $98.90 and you were to buy a $100,000 twenty-year Treasury bond (Treasury note), you would pay ~$98,900.

How do interest rates affect Treasury bond prices? ›

A fundamental principle of bond investing is that market interest rates and bond prices generally move in opposite directions. When market interest rates rise, prices of fixed-rate bonds fall. this phenomenon is known as interest rate risk.

How is interest paid on Treasurydirect bonds? ›

How does an I bond earn interest? I savings bonds earn interest monthly. Interest is compounded semiannually, meaning that every 6 months we apply the bond's interest rate to a new principal value. The new principal is the sum of the prior principal and the interest earned in the previous 6 months.

What do you understand by I bond interest rates? ›

The actual rate of interest for an I bond is calculated from the fixed rate and the inflation rate. The combined rate changes every 6 months. It can go up or down. I bonds protect you from inflation because when inflation increases, the combined rate increases.

How do treasury bonds work for dummies? ›

We sell Treasury Bonds for a term of either 20 or 30 years. Bonds pay a fixed rate of interest every six months until they mature. You can hold a bond until it matures or sell it before it matures.

How do you interpret bond prices? ›

The easiest way to understand bond prices is to add a zero to the price quoted in the market. For example, if a bond is quoted at 99 in the market, the price is $990 for every $1,000 of face value and the bond is said to be trading at a discount.

Should I buy bonds when interest rates are high? ›

Should I only buy bonds when interest rates are high? There are advantages to purchasing bonds after interest rates have risen. Along with generating a larger income stream, such bonds may be subject to less interest rate risk, as there may be a reduced chance of rates moving significantly higher from current levels.

Is it a good time to buy treasury bonds? ›

Bond yields have shot higher since March 2022, when the Federal Reserve began raising interest rates. The 10-year Treasury yield has soared to 4.67% Friday (April 26) from 1.72% Feb. 27, 2022. It even hit a 16-year high of 5% last October.

How to calculate treasury bill interest? ›

Face Value Redemption and Interest Rate

For example, suppose an investor purchases a 52-week T-bill with a face value of $1,000. The investor paid $975 upfront. The discount spread is $25. After the investor receives the $1,000 at the end of the 52 weeks, the interest rate earned is 2.56% (25 / 975 = 0.0256).

How do you avoid tax on treasury bonds? ›

You can skip paying taxes on interest earned with Series EE and Series I savings bonds if you're using the money to pay for qualified higher education costs. That includes expenses you pay for yourself, your spouse or a qualified dependent. Only certain qualified higher education costs are covered, including: Tuition.

What is the downside of an I bond? ›

Cons of Buying I Bonds

Potential disadvantages include: Maximum investment each year is $10,000. Yield is taxed as ordinary income. Must open a TreasuryDirect account to buy and sell.

How much is a $100 savings bond worth after 30 years? ›

How to get the most value from your savings bonds
Face ValuePurchase Amount30-Year Value (Purchased May 1990)
$50 Bond$100$207.36
$100 Bond$200$414.72
$500 Bond$400$1,036.80
$1,000 Bond$800$2,073.60
May 7, 2024

Which is better, bonds or treasury bills? ›

Treasury bonds—also called T-bonds—are long-term debt obligations that mature in terms of 20 or 30 years. They're essentially the opposite of T-bills as they're the longest-term and typically the highest-yielding among T-bills, T-bonds, and Treasury notes.

What is an I bond for dummies? ›

A series I bond is a non-marketable, interest-bearing U.S. government savings bond. Series I bonds give investors a return plus inflation protection on their purchasing power and are considered a low-risk investment. The bonds cannot be bought or sold in the secondary markets.

How long should you hold series I bonds? ›

You can cash in an I bond after a year, but if you withdraw sooner than five years, you'll pay a penalty of the last three months' interest. Because your rate changes every six months, it's smart to withdraw when your penalty will be based on a lower rate—and avoid cashing out when you'd be forfeiting a high rate.

How do you analyze Treasury bonds? ›

When evaluating the potential performance of a bond, investors need to review certain variables. The most important aspects are the bond's price, its interest rate and yield, its date to maturity, and its redemption features.

How to interpret Treasury yields? ›

The Treasury sells bonds at auction, and prices and yields change along with demand. If Treasury yields are high, it means that bond prices are low and investor demand is low due to higher confidence in other investments.

How do you read bond ratings? ›

A bond rating is a letter-based credit scoring scheme used to judge the quality and creditworthiness of a bond. Investment grade bonds are assigned “AAA” to “BBB-" ratings from Standard & Poor's and Fitch, and "Aaa" to "Baa3" ratings from Moody's. Junk bonds have lower ratings.

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