Disability payments come from Social Security, but only if you have worked and paid into the system

When you receive a disability payment, it comes from the Social Security Administration—but the money itself comes from a specific place. If you are receiving Social Security Disability Insurance (SSDI), your payments come from a trust fund built by payroll taxes that you and your employers have paid over your working years. If you are receiving Supplemental Security Income (SSI), your payments come from general federal tax revenue, not from Social Security taxes you paid.

The key difference is work history. SSDI requires that you have worked long enough and recently enough to have built up credits in the Social Security system. SSI does not require work history at all—it is a needs-based program for people with low income and limited resources, regardless of whether they have ever worked.

Both programs are run by the Social Security Administration, and both send monthly payments to people who cannot work because of a medical condition. But the source of the money and the rules for receiving it are different.

Key Takeaways

  • SSDI payments come from a trust fund built by your own payroll taxes and your employers' contributions over your working years.
  • SSI payments come from general federal tax revenue and do not require any work history.
  • Both programs are administered by Social Security, but they have different income and resource limits.
  • You cannot receive both SSDI and SSI at the same time, though you may be able to receive one and then transition to the other.

How SSDI payments are funded

Every paycheck you receive has a line item for Social Security tax—6.2 percent of your wages. Your employer pays an equal amount. That money does not sit in an account with your name on it. Instead, it goes into the Old-Age, Survivors, and Disability Insurance Trust Fund, which is a shared pool that pays benefits to millions of people.

When you work, you earn Social Security credits. In 2024, you earn one credit for every $1,730 in wages (the amount changes each year). You can earn up to four credits per year. To be found unable to work due to a medical condition and receive SSDI, you generally need 40 credits total, with at least 20 of them earned in the 10 years before you became unable to work. Younger workers may need fewer credits.

The trust fund is separate from the general federal budget. It exists only to pay SSDI, retirement benefits, and survivor benefits to people who have paid into it. If you have paid into Social Security through work, you have a claim on this fund when you meet the other requirements.

How SSI payments are funded

SSI is funded differently. The money comes from the general U.S. Treasury—the same pool that pays for roads, defense, and other federal programs. There is no separate trust fund and no requirement that you have worked.

SSI is a means-tested program, which means your income and resources are counted. In 2024, the federal SSI payment is $943 per month for an individual (amounts vary by state and change each year). To receive SSI, your countable income must be below the federal limit, and you can own only limited resources—typically $2,000 or less in countable assets.

SSI exists to provide a safety net for people who are unable to work and have no other income source. You do not need work history, but you do need to show that you have a medical condition that prevents you from working, and that your income and resources fall below the limits.

What happens if you receive both SSDI and SSI

You cannot receive the full amount of both programs at the same time. However, the rules are complex and depend on your specific situation.

If you are found unable to work and have enough work credits for SSDI, you will receive SSDI. If your SSDI payment is very low—below the federal SSI limit—you may also receive a small SSI payment to bring your total up to the SSI federal rate. This is called concurrent receipt.

Some people start on SSI when they have no work history, and later become able to receive SSDI as they accumulate work credits (for example, if they work part-time while on SSI). In that case, they may transition from SSI to SSDI, or receive both temporarily depending on the amounts involved.

The role of the Social Security Administration

The Social Security Administration is the federal agency that runs both programs. They review your medical records, decide whether your condition meets their definition of disability, track your work history and credits, and send your monthly payment.

Social Security does not decide where the money comes from—that is determined by which program you are in. But Social Security is responsible for determining whether you are unable to work, how much you are owed, and whether you continue to meet the rules of the program.

If you receive SSDI and your condition improves enough that you can work, Social Security will stop your payments. If you receive SSI and your income rises above the limit, Social Security will reduce or stop your payments. Both programs have work incentives that allow you to test your ability to work without when ready losing all your benefits, but Social Security administers these rules.

Why the funding source matters

The funding source affects several practical things. SSDI payments are based on your earnings record, so higher earners generally receive higher payments. SSI payments are the same federal amount for everyone (adjusted by state), regardless of how much you earned before.

SSDI has no resource limit—you can own a house, a car, and savings without affecting your payment. SSI has strict resource limits. SSDI has no income limit from other sources, though work income is counted in a specific way. SSI counts most income and will reduce your payment if you earn money.

The funding source also affects what happens to your family. If you receive SSDI, your spouse and children may be able to receive benefits based on your work record. SSI is an individual program—your family members cannot receive SSI based on your record.

What you should know about your own payments

When you receive a payment from Social Security, your payment stub or online account will tell you which program you are in. It will say "SSDI" or "SSI" clearly. If you are unsure, you can call Social Security at 1-800-772-1213 and ask.

Knowing which program you are in matters because the rules are different. If you start working, if your income changes, if you move to a different state, or if your medical condition changes, the rules for how your payment is affected will depend on which program you receive.

You can also view your Social Security account online at ssa.gov. Your account shows your earnings record, your work credits, and information about any benefits you are receiving. This is a free resource and does not require you to pay anyone to access it.

Frequently Asked Questions

If I receive SSDI, am I taking money away from people who are retired?

No. SSDI and retirement benefits come from the same trust fund, but they are separate programs with separate accounting. The trust fund is large enough to pay both. Your SSDI payment is based on your own work record and the taxes you paid, just as a retirement benefit would be.

Can I receive SSI if I have ever worked?

Yes. SSI does not care whether you have worked. It only cares about your current income and resources. If you worked years ago but have no income now, you can still receive SSI if you meet the other rules.

What if I do not have enough work credits for SSDI?

You may be able to receive SSI instead. SSI does not require work credits. You would need to show that you have a medical condition that prevents you from working, and that your income and resources are below the limits. You can explore for both programs at the same time.

Do I have to pay taxes on my disability payment?

SSDI and SSI payments are generally not taxable income. However, if you have other income above a certain amount, part of your SSDI payment may become taxable. SSI is almost never taxable. A Social Security representative can tell you whether your specific situation involves taxes on your benefits.

Where can I find out how much I have paid into Social Security?

You can create a free account at ssa.gov and view your earnings record. This shows every year you worked and how much you earned. It also shows how many work credits you have earned. You can print this record or read it.