31 C.F.R. § 359.53 Are taxpayer identification numbers (TINs) required for registration of book-entry Series I savings bonds?
Title 31 - Money and Finance: Treasury
The TIN of each person named in the registration is required to purchase a book-entry bond.
Title 31: Money and Finance: Treasury
PART 359—OFFERING OF UNITED STATES SAVINGS BONDS, SERIES I
Subpart C—Book-Entry Series I Savings Bonds
§ 359.53 Are taxpayer identification numbers (TINs) required for registration of book-entry Series I savings bonds?

