StacksVerified U.S. regulatory reference

31 CFR §351.43

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The registration of a definitive Series EE savings bond must include the TIN of the owner or first-named coowner. The TIN of the second-named coowner or beneficiary is not required but its inclusion is desirable. If the bond was purchased as a gift or award and the owner's TIN is not known, the TIN of the purchaser must be included in the registration of the bond.