Both series earn interest for up to 30 years and can be cashed after one year, though cashing before five years results in a penalty of the last three months of interest. Series EE Bonds Series I Bonds Fixed rate throughout the life of the bond.
Specifically designed to protect against rising costs. Format Available only in electronic form . buying savings bonds for grandchildren
You can purchase electronic savings bonds directly through the U.S. Treasury's official site, TreasuryDirect . Both series earn interest for up to 30