If the bond is paper, use the Savings Bond Calculator. How do you find the current value of an I bond? If the bond is in TreasuryDirect, look in your account there. That way, your money grows not just from the interest percentage but from the fact that the interest is calculated on a growing balance. This is called semiannually compounding (adding value 2 times a year). Over the next 6 months, we apply the new interest rate to that entire new value. That gives the bond a new value (old value + interest earned). Twice a year, we add all the interest the bond earned in the previous 6 months to the main (principal) value of the bond. I bonds earn interest from the first day of the month you buy them. The interest gets added to the bond's value Use this table to understand when each new rate begins to apply to your I bond. Interest rate changes depend on when we issued the bondĪlthough we announce the new rates in May and November, the date when the rate changes for your bond is every 6 months from the issue date of your bond. Turning the decimal number to a percentage gives a composite rate of The composite rate for I bonds issued from November 2023 through April 2024 is 5.27%.Ĭomposite rate formula:
