Established in 1987, FERS is the retirement framework for U.S. federal employees, replacing the legacy Civil Service Retirement System (CSRS). It utilizes a three-tiered structure: Social Security, the Thrift Savings Plan (TSP), and a Defined-Benefit pension annuity.
Federal employees pay standard FERS payroll contributions and 6.2% Social Security taxes, accumulating credits toward full Social Security benefits.
The TSP is the federal equivalent of a 401(k) plan, sharing the same contribution limits and catch-up rules under IRC §402(g) and IRC §414(v). Under FERS, agencies provide an automatic 1% contribution and match employee deferrals dollar-for-dollar up to 3%, and 50 cents on the dollar up to 5%, securing an immediate 100% return on your first 5% of savings.
A defined-benefit pension funded by mandatory employee contributions (ranging from 0.8% to 4.4% depending on hire date) and government funding, guaranteeing a lifetime monthly pension.
The Thrift Savings Plan (TSP) offers a curated, low-cost selection of index funds:
The Government Securities Investment Fund is unique to the TSP. It invests in short-term Treasury securities but is legally guaranteed to yield interest at the average yield of all outstanding Treasury bonds with maturities of four years or more. This delivers long-term bond yields with zero volatility and zero principal risk.
Tracks the Bloomberg U.S. Aggregate Bond Index, offering broad investment-grade debt exposure.
Tracks the S&P 500 Index, representing large-cap U.S. equities.
Tracks the Dow Jones U.S. Completion Total Stock Market Index, capturing mid- and small-cap U.S. equities.
Tracks the MSCI ACWI ex USA IMI Index, providing international stock exposure.
Lifecycle Funds that operate as Target-Date Funds, automatically shifting assets from equities to debt as you near your target retirement date.
The FERS basic annuity is calculated using a statutory formula:
The average of your highest three consecutive years of basic pay.
The total active years of federal service, plus accrued sick leave.
The standard pension multiplier is 1.0% per year of service. If you retire at age 62 or older with 20 or more years of service, the multiplier increases to 1.1%, generating a permanent 10% pension boost.
For example, a federal professional retiring at age 62 with 30 years of creditable service and a High-3 salary of $150,000 secures an annual pension of:
This pension is paid monthly for life and is adjusted annually for inflation via Cost Of Living Adjustments (COLAs) starting at age 62.
Social Security Fairness Act & FERS Bridges The legacy Windfall Elimination Provision (WEP) and Government Pension Offset (GPO) rules historically slashed Social Security benefits for retires receiving pensions from employment not covered by Social Security (such as old CSRS). Because FERS employees contribute to Social Security throughout their careers, they were never subject to these reductions. Furthermore, the Social Security Fairness Act, signed in January 2025, repealed both provisions, protecting affected public servants. If you retire at your Minimum Retirement Age (MRA) with 30 years of service, or at age 60 with 20 years of service, you are eligible for the FERS Special Retirement Supplement. This supplement acts as a bridge, paying an amount that estimates your future Social Security benefit earned during federal service, lasting until you reach age 62.