Railroad Retirement vs. Social Security Calculator

Railroad Retirement is its own separate federal retirement system, run by the Railroad Retirement Board instead of the Social Security Administration, but it's built in a way that deliberately overlaps with Social Security rather than replacing it outright. Tier I is calculated using the exact same benefit formula the SSA uses for retirement benefits, applied to your combined railroad earnings and any non-railroad Social Security-covered earnings you have. In effect, Tier I is what you'd receive if your entire earnings history had been under Social Security instead. Tier II is where railroad retirement becomes genuinely different. It's calculated only on your railroad earnings, using a formula closer to a private-sector pension: 0.7% of your average monthly earnings from your highest 60 months (up to the Tier II taxable maximum, $137,100 annually in 2026) times your years of railroad service up to 30, plus an additional 0.25% times any years of service beyond 30. Because Tier II is funded through separate railroad retirement payroll taxes and doesn't exist in the Social Security system at all, it functions as a genuine second layer on top of an SS-equivalent base, which is the core reason career railroad employees often end up with a meaningfully larger total retirement benefit than an equivalent Social Security-only worker with the same earnings history. This calculator applies both formulas using your average monthly earnings and years of service as simplified stand-ins for your actual 60-month and full-career earnings record, the same kind of simplification this site's other benefit estimators use.