Series i bond interest rate
Understanding Series I Savings Bonds
Series I savings bonds are a type of U.S. savings bond available from the U.S. Department of the Treasury.
TreasuryDirect.gov serves as the sole electronic platform for buying and redeeming U.S. Savings Bonds.
Series I Bond Interest Rate Components
For Series I Savings Bonds issued from May 1, 2026, to October 31, the interest rate is 4.26%.
This overall rate for these specific bonds incorporates a fixed rate of 0.90%.
Tracking Your I Bond Value
A Savings Bond Value Calculator is available to help determine the current worth of savings bonds.
You can use our free savings bond calculator at / to monitor the growth of your Series I savings bonds and other U.S. savings bonds.
Key takeaways
- Series I savings bonds are offered by the U.S. Department of the Treasury.
- The interest rate for Series I bonds includes a fixed rate component.
- A savings bond calculator can be used to track the value of your bonds.
Related tools
Estimate materials with our free savings bond calculator on Savings Bond Calculator.