SSI and SSA are separate programs run by the same agency, but they work differently
SSI (Supplemental Security Income) and SSA (Social Security Administration) are often confused because SSA runs both programs. But SSI is a specific benefit program, while SSA is the federal agency that administers it. SSA also runs Social Security Disability Insurance (SSDI) and retirement benefits — these are different programs with different rules about who qualifies and how much you receive.
The key difference: SSI is a needs-based program that looks at your income and assets right now. SSDI is based on your work history and the taxes you paid into Social Security. If you have never worked much or recently, SSI may be your only option. If you have worked and paid into Social Security, you might may have access to for SSDI instead, or possibly both.
Both programs serve people who are blind, disabled, or over 65, but the money comes from different sources and the rules about what you can own or earn are not the same.
Key Takeaways
- SSI is a needs-based program that pays based on your current income and assets; SSDI is based on your work history and Social Security taxes you paid.
- SSA is the agency that runs both SSI and SSDI, plus retirement benefits — it is the organization, not the benefit itself.
- SSI has strict limits on how much money and property you can own; SSDI does not count assets the same way.
- You can receive both SSI and SSDI at the same time if you meet the rules for each program.
How SSI works: income and asset limits matter most
SSI pays a monthly amount set by the federal government — the amount changes each year. To receive SSI, you must be disabled, blind, or 65 or older, and your income and assets must fall below the limits SSA sets. In 2024, the asset limit for an individual is $2,000; for a couple it is $3,000. These limits have not changed since 1989, even though the cost of living has risen.
Income includes wages, unemployment benefits, food, and shelter you receive for free. SSA counts most of what you own — a house you live in does not count, but a second property does. A car does not count if you use it for work or medical care, but money in a bank account counts fully.
SSI also has rules about work. If you work and earn money, SSA subtracts part of your earnings from your SSI payment. The first $65 per month you earn does not count, and then SSA counts only half of what you earn above that. But if you earn too much, your SSI stops.
How SSDI works: your work record determines your payment
SSDI is based on your Social Security work record — the wages you earned and the taxes you paid into Social Security over your lifetime. You do not have to be poor to receive SSDI. You can own a house, a car, have savings, and still receive SSDI because the program does not have asset limits.
To may have access to for SSDI, you must have worked long enough and recently enough to have earned enough Social Security credits. The number of credits you need depends on your age when you become disabled. Generally, you need 40 credits (roughly 10 years of work), but younger workers need fewer.
SSDI also allows you to work more than SSI does. You can earn up to a certain amount per month (called substantial gainful activity, or SGA) and still receive your full benefit. In 2024, that amount is $1,550 per month for non-blind workers. If you earn more than that, your benefit may be reduced or stop, but you keep your Medicare coverage for a longer period.
When you might receive both SSI and SSDI
Some people may have access to for both programs. This happens when you have a work record that qualifies you for SSDI, but your SSDI payment is very low — lower than the SSI federal payment amount. SSA will pay you SSDI first, then add SSI on top to bring you up to the SSI payment level.
The rules about income and assets still apply to the SSI portion. So if you have too many assets, you cannot receive the SSI top-up even if your SSDI payment is low. Your work income is also counted differently under each program, which can make the math complicated. An SSA representative can tell you whether you would receive both and how much.
How SSA determines disability
Both SSI and SSDI use the same definition of disability: a condition that prevents you from working and is expected to last at least 12 months or result in death. SSA does not pay for partial disability or short-term conditions. The condition must be severe enough that you cannot do any work that exists in the national economy, not just your old job.
SSA has a list of conditions (called the Blue Book) that automatically may have access to if your medical records match the criteria. If your condition is not on the list, SSA will look at your medical evidence, your age, education, and work history to decide whether you can work.
The disability information process is the same for SSI and SSDI, but the financial rules are different. You can be found disabled under both programs, but only receive one payment because of income or asset limits.
What happens to your benefits if you work
SSI and SSDI treat work income very differently. Under SSI, your payment is reduced dollar-for-dollar after you earn more than $65 per month (after the first $20 of unearned income does not count). This means working can quickly reduce or eliminate your SSI payment.
Under SSDI, you can earn up to the SGA amount without losing your benefit. Above that amount, your benefit is reduced by $1 for every $2 you earn. SSDI also includes a trial work period where you can test your ability to work for nine months without losing your benefit, and an extended period where you keep Medicare even if your benefit stops.
Both programs have work incentives designed to help you return to work without losing all your benefits immediately. These include plans to achieve self-support (PASS) under SSI and impairment-related work expenses (IRWE) under SSDI. These are complex rules that require planning with SSA.
How to find out which program you might receive
Contact SSA directly by calling 1-800-772-1213 or visiting your local SSA office. You can also create an account on ssa.gov to check your Social Security record and see how many work credits you have earned. Bring your Social Security card, birth certificate, and proof of citizenship or legal residency.
If you have worked, SSA can tell you whether you have enough credits for SSDI. If you have not worked much or recently, SSI may be your only option. If you may have access to for both, SSA will explain how much you would receive from each program and how the payments work together.
Frequently Asked Questions
Can I receive SSI and SSDI at the same time?
Yes. If you may have access to for SSDI but the payment is lower than the SSI federal rate, SSA will pay both. The SSI portion tops up your SSDI to the SSI amount. Asset and income limits still apply to the SSI portion.
Does SSA count my house as an asset for SSI?
No. The house you live in does not count toward the $2,000 asset limit for SSI. A second home, rental property, or land you own does count. Your car also does not count if you use it for work or medical care.
What is the difference between SSA and Social Security?
SSA is the federal agency. Social Security refers to the retirement and disability insurance programs SSA runs. SSI is a separate needs-based program also run by SSA. People often use "Social Security" to mean SSDI or retirement benefits, not SSI.
If I work, will I lose my SSI or SSDI?
Not automatically, but the rules are different. Under SSI, your payment drops quickly as you earn more. Under SSDI, you can earn up to a set amount ($1,550 in 2024) without losing your benefit. Both programs have work incentives that can help you keep some benefits while working.
How long does it take SSA to decide if I am disabled?
Initial decisions usually take three to six months. If SSA denies you, you can request reconsideration, which takes another three to six months. If denied again, you can request a hearing before an administrative law judge, which can take one to two years depending on your local office's backlog.