How is Social Security Disability Benefits calculated? This is how your earnings determine what you receive
Social Security Disability Insurance benefits aren’t calculated using a fixed payment for each type of disability. Instead, the Social Security Administration looks at your earnings record and works out how much you paid into the system during your working years.
The first step is calculating your Average Indexed Monthly Earnings, known as AIME. Social Security adjusts previous earnings to account for changes in national wage levels and then uses the relevant years from your work history to produce a monthly average.
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Your disability itself doesn’t determine the payment amount once you qualify. Two people with the same medical condition can receive very different SSDI benefits because their earnings histories are different.
How Social Security turns earnings into an SSDI payment
Once Social Security has calculated your AIME, it uses that figure to determine your Primary Insurance Amount, or PIA.
For somebody who first becomes eligible for disability benefits in 2026, the formula applies 90% to the first $1,286 of AIME, 32% to earnings between $1,286 and $7,749, and 15% to any amount above $7,749.
Those amounts are then added together to produce the PIA, which forms the basis of the worker’s monthly disability benefit.
The percentages remain fixed, but the dollar thresholds, known as bend points, are adjusted over time in line with changes in national wages.
Why your SSDI benefit can be different from someone else’s
The amount ultimately depends on how much you earned in jobs covered by Social Security and how long you worked before becoming disabled.
A worker with consistently higher covered earnings will generally receive a larger SSDI payment than somebody with a lower earnings history.
The average monthly benefit for disabled workers in 2026 is about $1,630, but individual payments can be considerably higher or lower.
Other factors can also affect what is actually paid. Certain public disability benefits, including some workers’ compensation payments, can reduce SSDI, while eligible spouses or children may qualify for additional benefits based on the worker’s record.
The easiest way to see a personalized estimate is through a my Social Security account, which uses your actual earnings record.
The central rule is simple: SSDI eligibility depends on both medical and work requirements, but the size of your monthly benefit is primarily determined by your past Social Security covered earnings.