SSDI Eligibility Requirements
The two tests SSA uses to decide an SSDI claim — work history and medical — explained for 2026.
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Reviewed by Leonard Goldberg, Editor · Last updated
The Two Tests You Must Pass
To receive SSDI you must satisfy both a work requirement and a medical requirement:
- Work / insured status — you paid enough Social Security taxes recently enough.
- Medical disability — your condition prevents substantial work and is expected to last at least 12 months (or be terminal).
Failing either test results in a denial, so it's worth understanding both before you apply.
The Work-Credit Requirement (2026)
In 2026, you earn one work credit per $1,890 of covered earnings, up to 4 credits per year. Most workers age 31+ need 40 credits total, with 20 earned in the 10 years before becoming disabled (the "recent work" test). Younger workers need fewer credits:
| Age at onset | Roughly |
|---|---|
| Under 24 | 6 credits in the prior 3 years |
| 24–30 | credits for about half the years since age 21 |
| 31–42 | 20 credits (~5 years) |
| 50 | 28 credits (~7 years) |
| 62+ | 40 credits (~10 years) |
The Medical Requirement
SSA considers you disabled if you cannot perform substantial gainful activity (SGA) because of a medically determinable impairment expected to last 12+ months. In 2026, SGA is $1,690/month (non-blind) or $2,830/month (blind) — earning above this generally means you're not considered disabled. SSA evaluates your condition through a five-step process that looks at your work activity, the severity of your impairment, SSA's medical "Listing of Impairments," your past work, and whether you can adjust to other work given your age, education, and skills.
Common Reasons Claims Are Denied
Many initial claims (about two-thirds) are denied. Frequent reasons include: insufficient or incomplete medical evidence, earning above the SGA limit, a condition not expected to last 12 months, failure to follow prescribed treatment, missing deadlines, or not meeting the work-credit/insured-status test. A strong, well-documented medical record is the single biggest factor in approval — and is where a representative most often helps.
Frequently Asked Questions
Who qualifies for SSDI?
People who (1) have enough recent work credits — generally 20 credits in the last 10 years for workers 31+ — and (2) have a medical condition that prevents substantial gainful activity and is expected to last at least 12 months or be terminal. You must meet both tests.
How many work credits do I need in 2026?
Most workers 31+ need 40 lifetime credits with 20 earned in the prior 10 years. In 2026, one credit equals $1,890 in earnings and you can earn up to 4 per year. Younger workers need fewer credits.
What is Substantial Gainful Activity (SGA)?
SGA is the earnings level at which SSA considers you able to work and therefore not disabled. In 2026 it's $1,690/month for non-blind individuals and $2,830/month for blind individuals.
What medical conditions qualify for SSDI?
There is no fixed list of automatically-qualifying conditions; SSA evaluates whether your impairment prevents substantial work for 12+ months. SSA maintains a "Listing of Impairments" (the Blue Book) describing conditions severe enough to qualify, but you can also qualify if your limitations prevent you from doing your past or other work.
Why are so many SSDI claims denied?
About two-thirds of initial claims are denied, often for insufficient medical evidence, earnings above SGA, conditions not expected to last 12 months, or missed deadlines. Many denials are overturned on appeal, especially at the hearing level.
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