What SSDI is and who it's for

Social Security Disability Insurance (SSDI) is a federal program that pays monthly benefits to people who cannot work because of a medical condition expected to last at least 12 months or result in death. Unlike Supplemental Security Income (SSI), which is need-based, SSDI is based on your own work history and the taxes you or a family member paid into Social Security.

You don't have to be poor to receive SSDI. The program looks at whether you have worked long enough and paid enough Social Security taxes, and whether your condition meets the Social Security Administration's definition of disability. If you worked and paid into the system, you may be may have access to to benefits even if you have savings or own a home.

Family members can also receive benefits on your SSDI record — your spouse, ex-spouse, or children under 19 (or up to 22 if in high school full-time). This is separate from your own benefit amount and doesn't reduce what you receive.

Key Takeaways

  • SSDI requires a work history and sufficient Social Security tax payments, not a low income, so you may have assets and still receive benefits.
  • Your condition must prevent you from working for at least 12 months or be expected to result in death, and must match Social Security's medical criteria.
  • The Social Security Administration reviews your medical records, work history, and age to decide whether you meet the disability standard.
  • Family members on your record can receive their own monthly payments, and you may be able to work part-time while receiving benefits under specific rules.
  • The process typically takes three to six months for an initial decision, though many people are denied the first time and must request reconsideration or a hearing.

Work history and earnings requirements

To receive SSDI, you must have worked and paid Social Security taxes for a certain period. The exact requirement depends on your age when you become disabled. Generally, you need 40 work credits, with at least 20 earned in the 10 years before you became disabled. A work credit is earned by paying Social Security tax on your wages; you can earn up to four credits per year.

If you became disabled before age 24, the requirements are lower — you may need only six credits earned in the three years before disability began. If you're between 24 and 31, you typically need credits for half the time between age 21 and when you became disabled, with a minimum of six credits.

Self-employed people and gig workers can also earn SSDI credits by paying self-employment tax, though the calculation is different. Your Social Security statement shows how many credits you've earned and is a good place to start if you're unsure whether you have enough.

How Social Security defines disability

Social Security has a strict definition of disability. Your condition must prevent you from doing any substantial work — not just your current job, but any job you could reasonably do given your age, education, and work experience. "Substantial work" means earning more than a set monthly amount, which changes yearly but is typically around $1,550 per month.

Social Security maintains a list called the Blue Book that describes conditions it recognizes as disabling. These include cancer, heart disease, arthritis, mental illness, back injuries, and many others. Your condition doesn't have to be on the list to be approved, but the medical evidence must show you meet or equal the severity described for a similar condition.

The agency will review your medical records, test results, and statements from your doctors. They may also send you to a doctor they choose for an examination. If your condition improves enough that you could work, your benefits can be stopped, so Social Security may ask for medical updates periodically.

The application and decision process

You can file for SSDI online at ssa.gov, by phone at 1-800-772-1213, or in person at your local Social Security office. You'll need your Social Security number, birth certificate, proof of citizenship or legal residency, and medical records related to your condition. Have your doctors' names, addresses, and phone numbers ready, because Social Security will contact them directly.

After you file, Social Security sends your case to your state's Disability information Services (DDS) office, which makes the initial decision. This typically takes three to six months. The DDS will request your medical records, may order additional tests, and will evaluate whether your condition meets their criteria. You'll receive a written decision in the mail.

If you're denied, you have the right to request reconsideration within 60 days. If reconsideration is also denied, you can request a hearing before an administrative law judge. Many people are approved at the hearing stage even after two denials, so this step is worth pursuing if you believe your condition truly prevents work.

Monthly benefit amounts and family payments

Your SSDI benefit is based on your average lifetime earnings — the higher your earnings history, the higher your monthly payment. Social Security calculates this using a formula that weights recent earnings more heavily. The average SSDI payment varies widely but is typically between $1,200 and $1,500 per month, though some people receive more or less.

When you turn 66 or 67 (depending on your birth year), your SSDI automatically converts to retirement benefits at the same amount. This is not a separate program; it's a transition that happens without any action on your part.

Family members can receive up to 50 percent of your benefit amount (spouses and ex-spouses) or 75 percent (children). If multiple family members are on your record, there's a family maximum — typically 150 to 180 percent of your own benefit. This means if your benefit is $1,400 and your family maximum is 180 percent, the total paid to you and all family members combined cannot exceed $2,520.

Work incentives and continuing to earn

You can work part-time while receiving SSDI under rules called work incentives. During a nine-month trial work period, you can earn any amount without affecting your benefits. After that, if your earnings stay below the substantial gainful activity level (around $1,550 per month), you continue receiving full benefits.

If your earnings exceed that amount, your benefits are reduced by $1 for every $2 you earn above the limit. This continues for a 36-month period called the extended may be able to access period. After that, if you're still earning above the limit, your benefits stop, but you can restart them within five years if your earnings drop again without having to reapply.

Other work incentives include the Plan to Achieve Self-Support (PASS), which lets you set aside income and resources for a work goal, and Impairment Related Work Expenses (IRWE), which lets you deduct costs related to your disability. These are complex rules, and a work incentives planning specialist can help you understand how much you can earn without losing benefits.

Medicare and Medicaid coverage

After you receive SSDI for 24 months, you become may have access to to Medicare Part A (hospital insurance) and Part B (medical insurance), even if you're under 65. You pay the standard Part B premium, which is deducted from your benefit. Medicare is the same program available to people over 65 and covers hospital stays, doctor visits, and some prescription drugs.

Medicaid coverage varies by state. Some states provide Medicaid automatically to SSDI recipients; others require a separate application. Medicaid covers services Medicare doesn't, such as long-term care and dental work in some states. Your local Social Security office can tell you what Medicaid coverage is available in your state.

What happens if you're denied

Denial is common on the first application — roughly two-thirds of initial applications are denied. This doesn't mean you're ineligible; it often means Social Security needs more medical evidence or clearer documentation of how your condition affects your ability to work.

You have 60 days from the date on your denial letter to request reconsideration. This sends your case to a different examiner at the DDS office. If reconsideration is denied, you can request a hearing before an administrative law judge within 60 days. At a hearing, you can present new evidence, have a representative speak for you, and testify about how your condition affects your daily life and ability to work.

Many people find it helpful to have a representative — either a lawyer or a non-lawyer advocate — help with reconsideration or a hearing. Representatives are paid only if you win, and their fee is limited by law to 25 percent of your back pay (the money owed from when you first filed).

Frequently Asked Questions

Can I receive SSDI if I've never worked?

No. SSDI requires a work history and Social Security tax payments. If you've never worked or don't have enough work credits, you may be able to receive Supplemental Security Income (SSI) instead, which is need-based and available to people with low income and resources, regardless of work history.

Will my SSDI stop if my condition improves?

Possibly. Social Security can stop your benefits if medical evidence shows your condition has improved enough that you could work. However, you have a right to medical review, and you can continue receiving benefits during the appeal process. The agency also has a Ticket to Work program that lets you test your ability to work without immediately losing benefits.

How much can I earn while on SSDI?

During your nine-month trial work period, you can earn any amount. After that, you can earn up to the substantial gainful activity level (around $1,550 per month in 2024) without losing benefits. Above that, benefits are reduced by $1 for every $2 earned. Work incentives like PASS and IRWE may let you earn more in specific situations.

Can my family members receive benefits on my SSDI record?

Yes. Your spouse, ex-spouse (if married at least 10 years), and unmarried children under 19 (or up to 22 if in high school) can each receive their own payment based on your earnings record. Each family member's benefit is typically 50 percent of your amount, but the total paid to all family members is capped at 150 to 180 percent of your benefit.

What's the difference between SSDI and SSI?

SSDI is based on your work history and Social Security taxes paid. SSI is need-based and available to people with low income and resources, regardless of work history. You can receive both programs at the same time if you meet the requirements for each, though your SSI payment will be reduced by any SSDI you receive.