31 C.F.R. § 359.17 When is interest payable on Series I savings bonds?
Title 31 - Money and Finance: Treasury
Interest earnings are payable upon redemption.
Title 31: Money and Finance: Treasury
PART 359—OFFERING OF UNITED STATES SAVINGS BONDS, SERIES I
Subpart A—General Information
§ 359.17 When is interest payable on Series I savings bonds?