Welcome to the free FERS retirement calculator for federal employees. The Federal Employees Retirement System (FERS) is a three-tiered retirement plan consisting of the Basic Benefit Plan (a defined-benefit pension), Social Security, and the Thrift Savings Plan (TSP). Understanding how these three pillars work together is essential for planning a financially secure retirement.
This calculator helps you estimate your FERS annuity based on your High-3 average salary and years of creditable service, project your TSP growth and withdrawal strategy, model Social Security benefits and the Special Retirement Supplement (SRS), and analyze taxes, FEHB health insurance premiums, and Medicare Part B costs. You can compare up to three retirement scenarios side by side — for example, retiring at your Minimum Retirement Age (MRA) of 57, at age 60, or at age 62 with the enhanced 1.1% multiplier.
Our Monte Carlo simulation stress-tests your TSP portfolio against hundreds of randomized market scenarios so you can see the probability that your savings will last through age 85, 90, or 95. Every projection is inflation-adjusted to show real purchasing power, not misleading nominal values. All calculations run locally in your browser — we never collect or store your financial data.
Built by Clean Analytics LLC, this tool is free and will remain free. It is designed as an educational resource and does not constitute official financial, tax, or retirement advice. For official guidance, consult your agency HR office or a certified financial planner.