CFR › Title 31 › Part 359 › §359.3531 CFR §359.35Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkTreasury discontinued the issuance of definitive Series I savings bonds through a payroll savings plan:(a)Effective October 1, 2010, for United States government employees, and(b)Effective January 1, 2011, for all other employees.