Social Security Disability Has Two Official Names

Social Security disability is called by two different names depending on which program you are in: Social Security Disability Insurance (SSDI) or Supplemental Security Income (SSI). Both are run by the Social Security Administration, both require you to have a medical condition that prevents work, and both pay monthly cash benefits. But they are separate programs with different rules about who can receive them, how much you get paid, and what other income or resources you can have.

The confusion happens because people often use "Social Security disability" to mean either one, and the Social Security Administration itself sometimes groups them together in public materials. When you contact Social Security or read a letter from them, you need to know which program you are actually in, because the rules that explore to you are completely different.

Key Takeaways

  • SSDI is for people who have worked and paid Social Security taxes; SSI is for people with very low income and resources, regardless of work history.
  • SSDI payments are based on your earnings record; SSI payments are a flat federal amount that varies only by state and living situation.
  • SSDI has no resource limit; SSI limits you to $2,000 in countable resources (or $3,000 if you are married).
  • Both programs use the same medical definition of disability, but the financial rules that determine who gets in are completely separate.
  • Your Social Security statement or award letter will tell you which program you are in by name.

SSDI: Disability Based on Your Work Record

Social Security Disability Insurance is the program for people who have worked and paid into Social Security through payroll taxes. To be found disabled under SSDI, you must have a medical condition that prevents you from doing substantial work, and you must have earned enough work credits in recent years. The amount you receive each month is based on your own earnings history — the higher your average earnings were, the higher your SSDI payment.

SSDI is sometimes called "workers' disability" because it is tied to your work record. You do not have to be poor to receive it. You can own a house, a car, have savings, and still receive SSDI. The only limit is on how much you can earn from work itself: if you earn more than about $1,550 per month (in 2024), Social Security will reduce or stop your benefits.

When you turn 66, your SSDI payments automatically convert to retirement benefits at the same rate. You do not have to reapply or do anything — Social Security handles the change on its own.

SSI: Disability Based on Financial Need

Supplemental Security Income is the program for people with very low income and very few resources, regardless of whether they have ever worked. To receive SSI, your countable income must be below a certain threshold (which varies by state), and your countable resources must not exceed $2,000 if you are single or $3,000 if you are married. Countable resources include cash, bank accounts, stocks, and some other assets, but not your home or one vehicle.

SSI payments are the same federal base amount for everyone in the same living situation — about $943 per month for an individual in 2024, though many states add a small supplement on top. Unlike SSDI, your SSI payment does not depend on how much you earned in the past. It depends only on how much income you have now and how many resources you own.

SSI is a needs-based program, which means it is designed to help people who are poor and disabled. If your income or resources go above the limit, you lose SSI even if your medical condition has not changed.

The Medical Definition of Disability Is the Same

Both SSDI and SSI use the same medical standard to decide whether you are disabled. Social Security defines disability as a medical condition that prevents you from doing any substantial work and is expected to last at least 12 months or result in death. The condition must be severe enough that you cannot do the work you did before and cannot do other work that exists in the national economy.

This is a high bar. Social Security denies most applications the first time. You do not have to be unable to leave your house or be in constant pain; you have to be unable to work at a level that supports you financially. Social Security looks at your age, education, work history, and medical records to decide whether you could do any other kind of work, even if it pays less than your old job.

Because the medical standard is the same, a person can be found disabled under SSDI and also be found disabled under SSI. The difference is not in the medical decision — it is in whether you have the work record for SSDI or the financial need for SSI.

How to Know Which Program You Are In

Your award letter from Social Security will state which program you are in by name. It will say either "Social Security Disability Insurance" or "Supplemental Security Income" near the top. If you cannot find your award letter, you can call Social Security at 1-800-772-1213 and ask a representative which program you are receiving.

You can also check your online account at ssa.gov. Log in to your "my Social Security" account, go to the "Benefits" section, and look at your benefit statement. It will show your program name and your monthly payment amount.

Knowing which program you are in matters because the rules about work, earnings, resources, Medicare or Medicaid, and what happens if you try to return to work are all different. If you are unsure, ask Social Security directly rather than guessing based on how much money you get or whether you worked before.

Why the Names Matter for Your Benefits

The program name determines what happens if you earn money from work. Under SSDI, you can earn up to about $1,550 per month without losing benefits (as of 2024). Under SSI, you can earn only about $65 per month before benefits start to reduce. If you are thinking about working, even part-time, you need to know which program you are in so you know how much you can earn.

The program name also determines what happens to your benefits if you inherit money or receive a settlement. Under SSDI, you can have unlimited resources. Under SSI, any money over $2,000 will cause you to lose benefits. A person on SSI who receives an inheritance might have to spend it down or lose their benefits entirely, while a person on SSDI would keep their benefits no matter how much money they have.

Finally, the program name determines which health insurance you get. SSDI leads to Medicare after 24 months of benefits. SSI leads to Medicaid, which is available when ready in most states. If you are on SSI and move to a state with a different Medicaid program, your coverage might change.

Frequently Asked Questions

Can I be on both SSDI and SSI at the same time?

Yes, in a situation called "concurrent benefits." This happens when your SSDI payment is very low (because your earnings record was low) and you also have very little income and few resources. Social Security will pay you SSDI first, then add SSI on top to bring you up to the SSI federal benefit rate. This is rare but does happen.

If I was on SSDI and my benefits stopped, can I get SSI instead?

Possibly, but only if you now meet the SSI financial limits. SSI has strict income and resource rules. If you have more than $2,000 in resources or your income is too high, you will not be found SSI-may be able to access even if you are still medically disabled. You would need to contact Social Security and ask them to evaluate you for SSI.

Does the name of the program affect how long I can receive benefits?

SSDI continues as long as you are disabled and meet the work rules. SSI continues as long as you are disabled and meet the income and resource limits. Both programs require periodic medical reviews to confirm you are still disabled. If your condition improves, either program can end, regardless of which one you are in.

What if I do not know whether I was approved for SSDI or SSI?

Call Social Security at 1-800-772-1213 with your Social Security number ready. A representative can tell you which program you are receiving in less than five minutes. You can also check your online account at ssa.gov if you have set one up, or visit your local Social Security office in person.