Series HH U.S. Savings Bonds are no longer available for purchase. Because they are a 20-year non-marketable bond, some people still own HH bonds. HH bonds pay interest twice a year. The interest rate is the same (fixed) for the first 10 years after the bond’s issue date. After 10 years, the interest rate is reset by the U.S. Treasury for the rest of the bond’s life. Interest on HH bonds is exempt from state and local – but not federal – taxes.