Disability Benefits Estimator

Social Security Disability Insurance (SSDI) pays a monthly benefit to workers who become disabled after paying enough into Social Security through payroll taxes, and the dollar amount is calculated the same way as a retirement benefit -- there is no separate "disability formula." This calculator approximates that process: it first builds an Average Indexed Monthly Earnings (AIME) figure by taking your Average Monthly Earnings and applying it across the lesser of your Years Worked or 35 (the real SSA formula always divides by 35 years, treating any missing years as zero, which is why working fewer than 35 years lowers the estimate and working beyond 35 stops helping it). That AIME then runs through the current Primary Insurance Amount (PIA) bend-point formula set by the SSA every year: 90% of the first $1,286 of AIME, 32% of the amount between $1,286 and $7,749, and 15% of anything above $7,749 -- a progressive structure that replaces a larger share of low earnings than high earnings, which is why Income Replacement is highest for the lowest earners and steadily drops off once Average Monthly Earnings climbs past the first bend point. The result is capped at the 2026 statutory maximum monthly SSDI benefit of $4,152, since no one's benefit -- disabled or retired -- can exceed that published ceiling regardless of how high their earnings were. Filing Status is captured for context but does not change this estimate: unlike a joint tax return, a worker's own SSDI benefit is calculated purely from that worker's earnings record -- a spouse may separately qualify for an auxiliary benefit on the same record, but this calculator estimates only the disabled worker's own benefit.

Treat the figures here as a ballpark planning estimate, not an official SSA determination -- this calculator does not wage-index your historical earnings the way the real SSA formula does, and it skips the separate non-medical eligibility test (a recent, sufficiently long work history measured in "quarters of coverage") that decides whether you qualify for SSDI in the first place. Only the SSA, working from your complete earnings record, can tell you your actual benefit and whether you're eligible to receive it. Current Age is likewise captured only for context: the dollar amount comes entirely from Average Monthly Earnings and Years Worked, and while a worker's age can determine SSDI *eligibility* in the real program, that eligibility test is outside what this estimator calculates.