: A Social Security Number (SSN) for individuals or an Employer Identification Number (EIN) for entities. U.S. Address : You must have a U.S. address of record.

Opening an account is free and typically takes about 10 minutes. :

Buying U.S. savings bonds online is done exclusively through TreasuryDirect , the official government portal for managing federal securities. Since January 1, 2012, banks and credit unions no longer sell paper savings bonds; they must be purchased electronically in "book-entry" form.