You cannot receive both SSI and SSDI simultaneously, but you may transition from one to the other

Social Security administers two separate disability programs with different rules, and you can only collect from one at a time. Supplemental Security Income (SSI) and Social Security Disability Insurance (SSDI) are not stacked — Social Security will not pay you from both programs in the same month. However, your situation may change over time in ways that move you from one program to the other, or you may have been on one program and now wonder if you should switch.

The reason for this rule is that both programs are designed to replace lost income due to disability. SSI is a needs-based program for people with limited income and resources; SSDI is an earned-benefit program based on your work history and Social Security taxes paid. Social Security treats them as mutually exclusive because paying both would exceed what either program intends to provide.

What actually happens in practice is more nuanced. Some people move between programs as their circumstances change. Others receive one program and also collect other benefits — like veterans' benefits or workers' compensation — which can affect their SSI or SSDI payment. Understanding the difference between the two programs and what triggers a change is the key to knowing what you might receive.

Key Takeaways

  • Social Security will not pay you SSI and SSDI in the same month; you receive one or the other based on your work history and income.
  • If you have worked and paid Social Security taxes, SSDI is usually the program you would receive; SSI is for people with very limited income and resources who have not worked enough to earn SSDI.
  • You can move from SSI to SSDI if you work enough quarters to become insured, or from SSDI to SSI if your SSDI payment drops below the SSI federal rate.
  • If you receive other income — such as workers' compensation, veterans' benefits, or a pension — it may reduce your SSI payment but typically does not affect SSDI.
  • Social Security can tell you which program you are on and whether a change in your situation would move you to the other program.

Why you are on one program instead of the other

When you first file for disability, Social Security looks at two things: whether you have a medical condition that meets their definition of disability, and whether you have a work history that makes you insured for SSDI. If you have worked and paid into Social Security, you are usually placed on SSDI. If you have not worked enough quarters or your work history is too old, you are placed on SSI instead.

The income and resource limits are the second reason you might be on SSI rather than SSDI. SSDI has no income limit — you can earn money and still receive your full SSDI payment (with some limits on work incentives). SSI has strict limits: in 2024, you can have no more than $2,000 in countable resources and your monthly income cannot exceed the federal SSI rate, which varies by state but is roughly $943 per month for an individual. If you have savings, a pension, or other income, you may not meet SSI's resource and income rules even if you are disabled.

A third reason is age. You can receive SSI at any age if you are disabled and meet the income and resource limits. SSDI requires that you became disabled before age 22 (for Disabled Adult Child benefits on a parent's record) or that you have worked recently enough to be insured. If you are over 65, you may be on Supplemental Security Income under the aged category rather than the disability category, though the rules are the same.

Moving from SSI to SSDI through work

If you are currently on SSI and you work, you may eventually earn enough work credits to become insured for SSDI. Social Security requires 40 work credits to be insured for disability benefits, with at least 20 of those credits earned in the 10 years before you became disabled. If you are working now, you earn one credit for each $1,730 of wages in 2024 (the amount changes yearly), up to four credits per year.

When you have earned 40 credits and meet the other requirements, Social Security will automatically move you from SSI to SSDI. You do not have to file again. Your SSDI payment will be based on your average earnings over your work history, so it may be higher or lower than your current SSI payment. Social Security will send you a notice explaining the change and your new payment amount before it takes effect.

During the transition, you may have a month where you receive both payments — this is a processing issue, not a permanent arrangement. Social Security will recover the overpayment from your future SSDI checks, or you may be asked to repay it. Contact your local Social Security office if you receive both payments in the same month to report it.

Moving from SSDI to SSI when your payment drops

SSDI payments are based on your earnings record and do not have an income limit. However, some people on SSDI have their payment reduced by other benefits they receive, such as workers' compensation, a government pension, or certain veterans' benefits. If your SSDI payment is reduced to below the federal SSI rate (roughly $943 per month in 2024, varying by state), you may be able to receive SSI to make up the difference.

This is called concurrent receipt or payment leveling. You do not apply for it separately; Social Security determines whether you meet the rules and adds SSI to your SSDI automatically. The SSI portion will be small — only enough to bring your total payment up to the SSI federal rate — but it can help if your SSDI has been reduced significantly.

To receive SSI alongside a reduced SSDI payment, you must still meet SSI's resource limits ($2,000 for an individual). Your income limit for SSI purposes is calculated differently when you are also on SSDI, so having a reduced SSDI payment does not automatically disqualify you from SSI.

How other income affects SSI versus SSDI

If you receive other benefits or income, the rules differ sharply between the two programs. SSDI has no income limit and does not count most other benefits against your payment. You can receive SSDI and also receive a pension, workers' compensation, unemployment, or veterans' benefits without any reduction to your SSDI check. The only exception is if you are working and earning above the substantial gainful activity level ($1,550 per month in 2024 for non-blind individuals), which can trigger a work incentive review.

SSI, by contrast, counts most other income dollar-for-dollar against your payment. If you receive workers' compensation, a pension, or certain other benefits, your SSI payment is reduced by that amount. Some income is excluded — such as the first $65 of monthly earnings plus half of earnings above that, or certain in-kind support. But if you receive $500 in workers' compensation and your SSI payment is $943, your new SSI payment would be $443.

This is one reason why moving from SSI to SSDI can be financially beneficial if you have other income. Once you are on SSDI, that other income no longer reduces your payment.

What happens if your disability improves or ends

If Social Security determines that your disability has improved and you no longer meet the medical criteria, your benefits will stop. This applies to both SSI and SSDI equally. However, Social Security has work incentive programs that allow you to work and still receive benefits for a period of time while you test your ability to work. These programs are the same for both SSI and SSDI recipients.

If you are on SSDI and you work, you can use the Trial Work Period, which allows you to work for up to nine months without any reduction to your benefit, as long as you report your earnings. After the Trial Work Period ends, you enter the Extended may be able to access Period, where you can work and still receive a benefit if your earnings are below the substantial gainful activity level. If you are on SSI and you work, you have similar protections under SSI work incentives, though the rules are slightly different.

If you move from one program to the other during a work incentive period, the rules of the new program apply going forward. Your work history and earnings are tracked continuously, so Social Security knows whether you are still meeting the requirements for your current program.

Frequently Asked Questions

Can I receive SSI and SSDI at the same time?

No. Social Security will not pay you both programs in the same month. You receive one or the other based on your work history, income, and resources. However, if your SSDI payment is reduced by other benefits below the SSI federal rate, you may receive a small SSI payment alongside your SSDI.

If I am on SSI now, can I switch to SSDI later?

Yes, if you work and earn enough work credits. You need 40 credits total, with at least 20 earned in the 10 years before you became disabled. Social Security will move you automatically once you meet the requirements; you do not have to file again.

What if I receive workers' compensation and I am on SSI?

Workers' compensation reduces your SSI payment dollar-for-dollar. If you receive $500 in workers' compensation, your SSI payment is reduced by $500. If you were on SSDI instead, the workers' compensation would not reduce your SSDI payment at all.

How do I know which program I am currently on?

Your Social Security award letter or payment stub will state whether you are receiving SSI or SSDI. You can also call Social Security at 1-800-772-1213 or visit your local office. They can tell you which program you are on and explain why.

If my SSDI payment is very low, can I get SSI to supplement it?

Possibly. If your SSDI payment is below the federal SSI rate and you meet SSI's resource limits, Social Security may add a small SSI payment. This is determined automatically; you do not have to file separately. Contact Social Security to ask whether you may have access to.