SSDI is a federal insurance program that pays monthly cash to people who cannot work because of a disability

Social Security Disability Insurance (SSDI) is funded by payroll taxes you and your employer paid into Social Security while you worked. Unlike needs-based programs, SSDI does not look at how much money you have in the bank or what your income is now. Instead, it looks at whether you have a medical condition that prevents you from working, and whether you paid into the system long enough.

The program pays you a monthly check for as long as your condition meets Social Security's definition of disability. Family members — your spouse, ex-spouse, or children under 19 (or 22 if in school full-time) — may also receive payments based on your work record, even if you have never worked together.

SSDI is separate from Supplemental Security Income (SSI), which is a needs-based program for people with low income and few resources. Some people receive both, but they are different programs with different rules.

Key Takeaways

  • SSDI pays a monthly benefit based on your lifetime earnings record, not on your current financial need.
  • You must have a medical condition that prevents you from doing any substantial work, and the condition must last at least 12 months or result in death.
  • You must have worked long enough and recently enough to have earned enough Social Security credits — the number required depends on your age.
  • Your spouse, ex-spouse, and children may receive benefits on your record even if they have never worked.
  • The monthly payment amount varies by person and is based on your average lifetime earnings, not a fixed dollar amount.

How much SSDI pays each month

Your monthly SSDI payment is based on your Primary Insurance Amount (PIA), which Social Security calculates from your average earnings over your working years. The program uses a formula that weights your highest-earning years more heavily. Because the formula is based on your actual work history, no two people receive the same amount.

The average SSDI payment in 2024 is roughly $1,500 per month, but this varies widely. Someone who worked in a low-wage job for many years will receive less than someone who earned higher wages. Someone who worked only briefly will receive less than someone with a full career.

If you are married or have children, they may receive their own payments based on your record. A spouse typically receives up to 50 percent of your PIA; a child typically receives up to 75 percent. However, there is a family maximum — the total amount paid to you and all family members combined cannot exceed roughly 150 to 180 percent of your PIA. If the family total would exceed this cap, each family member's payment is reduced proportionally.

What counts as a disability under SSDI

Social Security has a strict definition of disability. You must have a medical condition — physical or mental — that prevents you from doing any substantial work. "Substantial work" means earning more than a set monthly amount, which changes each year. In 2024, that amount is $1,550 per month (or $2,590 if you are blind).

The condition must be expected to last at least 12 months or result in death. A temporary injury or illness, even a serious one, does not may have access to. Social Security also does not pay for partial disability or temporary disability.

Social Security maintains a list called the Blue Book, which describes medical conditions that automatically meet the disability standard if your medical records match the criteria. Conditions on this list include cancer, heart disease, severe arthritis, severe mental illness, and many others. If your condition is on the list and your medical evidence matches, approval is faster.

If your condition is not on the list, Social Security will still consider your case. They look at your medical records, what your doctors say you can and cannot do, your age, education, and work history. Approval takes longer in these cases because each process is reviewed individually.

Work history and credits required for SSDI

To receive SSDI, you must have worked long enough to earn enough Social Security credits. You earn one credit for each $1,730 of wages you earn in a year (this amount changes annually). You can earn a maximum of four credits per year.

The number of credits you need depends on your age when you become disabled. If you become disabled before age 24, you need six credits earned in the three years before you became disabled. If you are between 24 and 31, you need credits equal to the number of years from age 21 to the year you became disabled, with a minimum of six. If you are 31 or older, you typically need 40 credits total, with at least 20 earned in the 10 years before you became disabled.

This means a young person who worked part-time for a few years may have enough credits, while someone who worked full-time for only a few years may not. Social Security can tell you exactly how many credits you have earned by looking at your work record.

How to understand your SSDI payment notice

When Social Security approves your SSDI claim, they send you a notice that explains your monthly payment amount and when payments begin. The notice also lists any family members who are receiving payments on your record.

Your payment is deposited directly into your bank account each month, usually on the third of the month (though the exact date may vary). Social Security sends you an annual statement called the Benefit Verification Letter, which shows your current payment amount and confirms you are receiving SSDI. You may need this letter to prove your income to landlords, lenders, or other organizations.

If your circumstances change — you return to work, your medical condition improves, you marry, or a family member turns 19 — you must report it to Social Security. Changes can affect your payment amount or whether you continue to receive benefits.

What happens if you try to work while on SSDI

SSDI includes work incentives that allow you to test whether you can return to work without when ready losing your benefits. The Trial Work Period lets you work and earn any amount for nine months (not necessarily consecutive) without affecting your SSDI payment. Social Security does not count these nine months toward the limit on how long you can work.

After your Trial Work Period ends, you enter the Extended may be able to access Period, which lasts 36 months. During this time, you can work, but if you earn more than the substantial gainful activity amount ($1,550 in 2024), your benefits stop for that month. However, you do not lose SSDI entirely — if your work attempt fails and your earnings drop below the limit again, your benefits restart without a new process.

If you work and earn above the substantial gainful activity amount for nine months during the Extended may be able to access Period, your SSDI ends. You can reapply later if you stop working and your condition still prevents substantial work, but you will have to go through the process process again.

Frequently Asked Questions

Can I receive SSDI and SSI at the same time?

Yes. If your SSDI payment is very low, you may also receive SSI to bring your total income up to the SSI limit. This is called concurrent benefits. However, you must meet the requirements for both programs — you need the work history for SSDI and the low income and resources for SSI.

What if I disagree with Social Security's decision to deny my claim?

You can request reconsideration within 60 days of the denial notice. If reconsideration is denied, you can request a hearing before an administrative law judge. You can represent yourself or hire a lawyer. Many people win at the hearing stage after losing at earlier stages.

Does SSDI count as income for other programs?

SSDI counts as income for some programs and not others. It counts for SSI, SNAP (food information), and housing programs. It does not count for Medicare or Medicaid. Check with each program you use to understand how SSDI affects your benefits.

Can my ex-spouse receive benefits on my SSDI record?

Yes, if you were married at least 10 years, you are both at least 62 years old (or your ex-spouse is caring for your child under 16), and your ex-spouse is not married to someone else. Your ex-spouse's benefit does not reduce your payment.

What happens to my SSDI when I turn 66?

Your SSDI automatically converts to retirement benefits at your full retirement age, but the payment amount stays the same. You continue to receive the same monthly check under a different program name. If you are also receiving family benefits, they convert as well.