Estimate your SSDI or SSI benefits, calculate back pay, and check your eligibility. All free, all updated for 2026.
Figuring out how much you'll get from Social Security Disability shouldn't require a math degree. These calculators use the same formulas and 2026 numbers that the SSA uses, broken down so you can actually understand them.
Every tool here is free to use, runs right in your browser, and doesn't store any of your information. Pick the one that fits your situation and get your estimate in under a minute.
Estimate your monthly SSDI payment based on your earnings history. Uses the 2026 PIA formula with current bend points.
Calculate your estimated SSI payment based on your income, resources, and living situation. Uses the 2026 Federal Benefit Rate of $994/month.
Estimate your SSDI lump sum back pay based on your onset date, application date, and approval date. Includes attorney fee calculations.
Answer 8 quick questions to find out if you might qualify for SSDI, SSI, or both. Takes less than 2 minutes.
If your estimates look good or the screener says you might qualify, the next step is to check your eligibility with a quick evaluation.
See If You QualifyAll of these tools use the same formulas and data points that the Social Security Administration uses in 2026. The SSDI calculator applies the Primary Insurance Amount (PIA) formula with the current bend points. The SSI calculator uses the Federal Benefit Rate and income exclusion rules. The back pay calculator factors in waiting periods and retroactive benefit limits.
That said, these are estimates. The SSA looks at your full work history, specific earnings record, and other factors we can't account for in a simple calculator. For exact numbers, check your Social Security Statement or contact your local SSA office.
Want to learn more about disability benefits before running the numbers? Check out these guides and articles: