Find Out What Your SSDI Benefit Could Be in 2026

How This Calculator Works

SSDI pays you based on what you earned over your working life. The Social Security Administration uses a formula called the Primary Insurance Amount (PIA). It sounds complicated. It isn't.

Here is what happens. SSA takes your top 35 earning years. It adjusts them for inflation. It averages them into a monthly figure called your AIME. Then it applies a formula using two bend points — $1,286 and $7,749 in 2026 — to get your monthly benefit.

Enter your average annual earnings above. Our calculator runs the same math SSA uses. You get an estimate in seconds.

2026 SSDI Key Numbers

What Is SSDI?

SSDI stands for Social Security Disability Insurance. It is not welfare. You paid for it. Every paycheck you ever received had FICA taxes taken out. Those taxes funded your SSDI coverage.

If a disability stops you from working, SSDI replaces part of that income. The amount you get depends on your earnings history — not your need. The more you earned and paid in, the higher your monthly check.

To qualify, you must have a condition that prevents substantial work, that has lasted or will last at least 12 months, and you need enough work credits. In 2026, one credit requires $1,890 in earnings. Most people need 40 credits total, with 20 earned in the last 10 years.

Your Potential Back Pay

Most SSDI claims take months or years to process. That time is not lost. If approved, SSA pays you for every month you qualified but weren't receiving benefits yet. That lump sum is called back pay.

Many approved applicants receive $20,000 to $50,000 or more in back pay. Our back pay calculator shows you what you might be owed.

Should You Work With an Attorney?

You don't have to. But the numbers are compelling.

Applicants with attorneys are approved at higher rates, especially at the hearing stage. The fee structure is set by federal law. Your attorney takes 25% of your back pay, capped at $7,200 total. You pay nothing unless you win. Nothing out of pocket. Ever.

If you are considering filing — or if you have already been denied — a free consultation costs you nothing.

How the SSA Calculates SSDI Benefits

The Social Security Administration calculates your SSDI benefit in two steps. First, it determines your Average Indexed Monthly Earnings (AIME) by adjusting your historical earnings for national wage growth and averaging your highest 35 years. If you worked fewer than 35 years, the missing years are counted as zeros, which can lower the average.

Second, it applies the Primary Insurance Amount (PIA) formula using 2026 bend points: 90% of the first $1,286 of AIME, plus 32% of AIME between $1,286 and $7,749, plus 15% of AIME above $7,749. Your SSDI monthly benefit equals 100% of your PIA — there is no early-retirement reduction.

For a concrete example, an AIME of $2,000 produces a PIA of $1,385.80: 90% × $1,286 = $1,157.40, plus 32% × ($2,000 − $1,286) = $228.48, for a total of $1,385.88, rounded down to the nearest 10 cents.

The 5-Month Waiting Period

SSDI imposes a five-month waiting period from your disability onset date before benefits begin. This means your first eligible benefit month is the sixth full month after onset. The waiting period also affects back pay — accumulated benefits start from the protected onset date (onset + 5 months), not the onset itself. Terminal conditions in the SSA's Compassionate Allowances list may bypass the standard waiting period.

SSDI vs. Working — The SGA Rule

In 2026, earning more than $1,690/month ($2,830 if statutorily blind) is considered Substantial Gainful Activity (SGA) and can end your SSDI benefits. The Trial Work Period (TWP) lets you test work for 9 months without losing benefits regardless of earnings — but in 2026, any month earning more than $1,210 counts toward the 9-month limit.