SSDI applications are complex and often denied on the first attempt. Consider consulting a Social Security attorney or advocate — they typically work on contingency and only get paid if you win.
What Is SSDI?
Social Security Disability Insurance (SSDI) is a federal program that provides monthly income to people who are unable to work due to a serious medical condition. Unlike SSI (Supplemental Security Income), SSDI is based on your work history and the Social Security taxes you have paid throughout your career.
Who Qualifies for SSDI?
To qualify for SSDI, you must meet two main criteria. First, you must have a medical condition that prevents you from doing substantial work and is expected to last at least 12 months or result in death. Second, you must have earned enough work credits — typically 40 credits, with 20 earned in the last 10 years, though younger workers may qualify with fewer credits.
What Counts as a Disability?
The SSA uses a strict definition of disability. Your condition must prevent you from doing the work you did before, prevent you from adjusting to other types of work, and be expected to last at least one year or result in death. The SSA maintains a list of qualifying conditions called the Blue Book, but conditions not on this list can still qualify if they are severe enough.
How Much Will You Receive?
Your SSDI benefit is based on your average lifetime earnings before your disability began, calculated the same way as retirement benefits. In 2026, the average SSDI payment is approximately $1,537 per month. The maximum possible SSDI benefit in 2026 is $3,822 per month for someone with a strong earnings history.
How to Apply for SSDI
You can apply online at SSA.gov, by calling 1-800-772-1213, or by visiting your local SSA office. You will need your Social Security number, birth certificate, medical records and doctor information, work history for the past 15 years, and recent W-2 forms or tax returns. Apply as soon as you become disabled — there is a five-month waiting period before benefits begin.
The SSDI Application Process Timeline
The initial application typically takes 3 to 6 months for a decision. If denied, you can request reconsideration within 60 days, which takes another 3 to 5 months. If denied again, you can request a hearing before an Administrative Law Judge, which can take 12 to 24 months. The entire process from initial application to hearing can take 2 to 3 years in some cases.
What to Do If You Are Denied
Approximately 67% of initial SSDI applications are denied. Do not be discouraged. File an appeal within 60 days of your denial letter. The approval rate improves significantly at the hearing level, especially when applicants are represented by an attorney or advocate. Most disability attorneys work on contingency — they only collect a fee if you win, capped at 25% of back pay up to $7,200.
SSDI vs. SSI — What Is the Difference?
SSDI is based on your work history and is available to disabled workers who have paid Social Security taxes. SSI (Supplemental Security Income) is a needs-based program for disabled individuals with limited income and assets, regardless of work history. Some people qualify for both programs simultaneously, which is known as concurrent benefits.
Key Takeaways
SSDI provides essential income protection for workers who become disabled before retirement age. The application process is lengthy and complex, but persistence pays off. Use our SSDI Eligibility Check to see if you may qualify, and consider seeking professional help when applying.