Savings Bond Calculator

A savings bond is worth what you paid plus the interest it has earned, less the last three months of interest if it is under five years old. Choose the series, type the month and year printed on the bond (the issue date), then the denomination on a paper bond or the amount you paid for an electronic one. The calculator answers for the latest month in Treasury’s official value files and for any earlier month you pick. Electronic bonds are held in TreasuryDirect, where the value is shown for you.

Looking for an I bond instead? Pick Series I above, or open the I bond calculator and the current I bond rate.

Interest is added every month and compounded twice a year: every sixth month from the issue date the bond’s rate is applied to a new, larger value. Paper EE bonds were sold for half of their face value (a $100 bond cost $50); electronic EE bonds are sold for their face value. Treasury works every value out for a unit with a $12.50 price (a $25 paper bond) and scales it to your bond (31 CFR 351.16 and 351.70).

• May 2005 and later: a fixed rate set when the bond is issued, kept for 20 years. Example: a bond issued in May 2026 earns a fixed 2.40% and is guaranteed to double in 20 years.
• May 1997 to April 2005: a variable rate, 90% of the 6-month average of 5-year Treasury yields, reset every six months. These bonds double at 17 years (issued through May 2003) or 20 years (issued June 2003 to April 2005).
• May 1995 to April 1997: a short-term rate for five years, then a long-term rate (85% of the 6-month average of 5-year Treasury yields). The value changes only every six months, and there is no 3-month penalty.
• January 1980 to April 1995: the higher of a guaranteed rate and a market-based rate. All of these bonds stopped earning interest at 30 years, between 2010 and 2025, so the calculator shows Treasury’s published final value for them.

The EE bond interest rate for new bonds is a fixed 2.40% for bonds issued May 1, 2026 to October 31, 2026. Treasury sets the next fixed rate on November 1, 2026. Doubling in 20 years takes about 3.5% a year with interest compounded twice a year (3.496%). A rate of 2.40% is below that, which is why the 20-year guarantee matters: if the interest alone does not double your money, Treasury makes up the difference at year 20.

The rate is fixed for the first 20 years. Treasury may change the rate for the last 10 years, and if it does, you can cash the bond at 20 years instead.

EE bonds bought since May 2005 are guaranteed to be worth at least twice the price after 20 years, as are bonds issued from June 2003. Older bonds issued from May 1997 to May 2003 double at 17 years. The calculator shows the month your bond doubles and whether Treasury had to add money to get there. Example: a bond issued in November 2005 at a fixed 3.20% was worth less than double after 20 years, so Treasury raised it to double in November 2025.

After 30 years. The bond’s final maturity is 30 years after the issue month. After that it earns nothing, so a paper bond just sits at the same value. If the issue date on a paper EE bond is more than 30 years ago, it has already stopped earning interest: cash it in. Use Treasury’s Treasury Hunt to find bonds you forgot about.

Cash an EE bond issued since 1997 less than five years after the issue date and Treasury gives you the value from three months earlier. The calculator shows that amount as your value and tells you how much interest was left out. A bond cannot be cashed during its first year (the first 6 months for bonds issued before February 2003), and the value is never lower than what you paid.

Interest on EE and I bonds is subject to federal income tax but not to state or local income tax. You can report it each year or when you cash the bond. If you use the money for qualified higher education costs, some of it may be tax free (IRS Form 8815). The bond must have been issued after 1989 (1980s bonds do not qualify), in your name or in yours and your spouse’s, and you must have been at least 24 before it was issued. You cannot be married filing separately, and for the 2025 tax year the exclusion starts to phase out at modified AGI of $99,500 (single or head of household) or $149,250 (married filing jointly) and is gone at $114,500 or $179,250. Check the current Form 8815 instructions for each year.

Electronic bonds are cashed in your TreasuryDirect account. Paper bonds can be cashed at many banks and credit unions, or sent to Treasury. See Treasury’s cashing instructions. To compare with a bank product, try the CD rate calculator.

The $12.50 unit values behind every EE result match all 92,525 EE values the calculator serves in Treasury’s Savings Bond Value Files (through November 2026), with 0 differences. Treasury’s own paper tables equal that unit value times the face amount divided by 25 for all 743,088 of their values (March 1999 to May 2023), and the calculator’s paper results match 363,168 of those table values; the other 379,920 are values it deliberately does not show. Electronic amounts follow 31 CFR 351.70 (amount ÷ 100 × the value of a $100 bond); there is no official data for individual electronic amounts to compare with. Bonds issued from May 1995 on are computed with Treasury’s rules. Bonds issued from January 1980 to April 1995 are shown from Treasury’s published final values once they stopped earning interest at 30 years; their value in earlier months used rules that are not reproduced here, so those months are not shown. Months after November 2026 are not shown.