Title 5 › Part PART III— - EMPLOYEES › Subpart Subpart G— - Insurance and Annuities › Chapter CHAPTER 84— - FEDERAL EMPLOYEES’ RETIREMENT SYSTEM › Subchapter SUBCHAPTER II— - BASIC ANNUITY › § 8421
If you get a qualifying federal retirement annuity, you can also get a monthly annuity supplement while you keep that annuity. You do not get the supplement if your annuity does not start before you turn 62. Some types of annuities only qualify if you have reached the plan’s minimum retirement age. The supplement stops the month before you would first be able to get Social Security old‑age benefits, but never later than the month you turn 62. Each month’s supplement equals the Social Security benefit you would have at age 62 (calculated under Social Security rules as if you were fully insured on January 1 of the year your supplement begins, with the maximum early‑retirement reduction for people born in your year). That amount is multiplied by a fraction: your total years of service (rounded to the nearest year, with a half year rounded up, and not more than 40) divided by 40. In making the Social Security calculation, only basic pay for service years is counted; years after your separation and before age 62 are counted as zero; and years before separation without a full year of service are adjusted using a formula tied to average wages and your first full year of service. For payroll and other administrative rules, the supplement is treated like other annuity payments.
Full Legal Text
Government Organization and Employees — Source: USLM XML via OLRC
Legislative History
Reference
Citation
5 U.S.C. § 8421
Title 5 — Government Organization and Employees
Last Updated
Apr 6, 2026
Release point: 119-73