Social Security
SSI vs. SSDI: What's the Difference and Can You Get Both?
SSI vs. SSDI: one is based on your work record, the other on financial need. Compare eligibility, 2027 payment amounts, Medicare, Medicaid and applying.
By the FinancialAdviser.com Editorial Team
Fact-checked against primary sources
How we make money
FinancialAdviser.com is free to read. We may be paid when you call a licensed agent listed on our pages or use a partner link.
Short answer: SSI vs. SSDI comes down to work history versus financial need. SSDI (Social Security Disability Insurance) pays people with a qualifying disability who worked long enough in jobs covered by Social Security. SSI (Supplemental Security Income) doesn't require a work history; it pays people who are 65 or older, blind or disabled and have limited income and resources. In 2027, the SSI federal payment standard is $1,029 a month for an individual, and SSA estimates the average disabled worker's SSDI benefit at $1,701.
Both programs are run by the Social Security Administration (SSA), and both can pay people with disabilities. But they have different rules, different health coverage and different effects on your retirement. This guide walks through each difference using SSA's own figures.
What Is the Difference Between SSI and SSDI?
USA.gov sums it up in two lines: "SSDI is tied to your work history," and "SSI does not require you to have a work history." Here's how the two programs compare:
| SSDI | SSI | |
|---|---|---|
| Who it's for | People with a qualifying disability who are "insured" through Social Security work credits | People 65 or older, blind or disabled, with limited income and resources |
| Work history needed | Yes, generally 40 credits, 20 earned in the 10 years before the disability (fewer for younger workers) | No |
| Income and asset limits | Earnings above the SGA level generally mean SSA won't consider you disabled | Limited income; countable resources of $2,000 (individual) or $3,000 (couple) in 2026 and 2027 |
| Paid from | Social Security disability trust fund | General tax revenues, not Social Security taxes |
| 2027 amount | Average disabled worker: $1,701 a month (SSA estimate) | Federal payment standard: $1,029 individual, $1,544 couple |
| Health coverage | Medicare after 24 months of SSDI benefits | Medicaid in most states |
| Effect of other income and resources | Don't affect the SSDI payment (SSA Red Book) | Countable income lowers the payment; many states add a supplement |
Who Qualifies for SSDI?
SSDI is an insurance program you pay into through payroll taxes. To qualify, SSA says you must be "insured" based on the Social Security (FICA) taxes paid on your earnings, or in some cases the earnings of a spouse or parent.
Work credits. You can earn up to four credits a year. SSA says you generally need 40 credits, 20 of them earned in the 10 years ending with the year your disability begins. Younger workers may qualify with fewer. In 2027, you earn one credit for each $1,970 of earnings, up from $1,890 in 2026.
A qualifying disability. SSA says it pays "only for total disability." Partial and short-term disabilities don't qualify. You must be unable to work at the substantial gainful activity (SGA) level because of a medical condition that has lasted, or is expected to last, at least 12 months or to result in death.
The SGA limit. SGA is the monthly earnings level SSA uses to judge whether you're working too much to be considered disabled:
| SGA level (monthly) | 2026 | 2027 |
|---|---|---|
| Non-blind | $1,690 | $1,770 |
| Blind | $2,830 | $2,950 |
The waiting period. SSA says there is generally a five-month waiting period. Once you're approved, SSA says your entitlement to benefit payments begins in the sixth full month after the date your disability began.
Who Qualifies for SSI?
SSI is a needs-based program. SSA says that to get SSI, "you must be at least 65 years old, blind, or have a disability, and have 'limited' income and resources." Children with disabilities or blindness may also qualify. You also must meet citizenship or qualified noncitizen rules and live in the 50 states, Washington, D.C., or the Northern Mariana Islands.
Resource limits. SSA's 2026 guide to SSI resources sets the limit for countable resources at $2,000 for an individual and $3,000 for a couple; the 2027 fact sheet keeps those limits. Not everything counts. Among the items SSA excludes:
- The home you live in and the land it's on
- One vehicle, regardless of value, if you or a household member use it for transportation
- Household goods and personal effects
- Life insurance policies with a combined face value of $1,500 or less
- Burial spaces, and burial funds of $1,500 or less each for you and your spouse
- Up to $100,000 in an ABLE (Achieving a Better Life Experience) account
Income. SSI is reduced by your "countable income." According to SSA's 2026 guide to SSI income, SSA subtracts countable income from the SSI federal benefit rate. Not all income counts in full. For example, SSA excludes the first $65 of monthly earnings and one-half of earnings over $65. Unearned income, which SSA says includes Social Security benefits and pensions, also counts.
How Much Do SSI and SSDI Pay in 2026 and 2027?
The 2027 cost-of-living adjustment (COLA) is 3.6%. SSA says increased payments to SSI recipients begin on December 31, 2026, and the increase for Social Security beneficiaries, including SSDI, begins with benefits payable in January 2027. Our guide to the 2027 Social Security COLA covers the full set of changes.
| Monthly amount | 2026 | 2027 |
|---|---|---|
| SSI federal payment standard, individual | $994 | $1,029 |
| SSI federal payment standard, couple | $1,491 | $1,544 |
| Average SSDI benefit, all disabled workers (SSA estimate) | $1,642 | $1,701 |
| Average SSDI benefit, disabled worker with spouse and one or more children (SSA estimate) | $2,970 | $3,077 |
Keep in mind what these numbers mean:
- SSI's federal payment standard is a maximum federal amount, not a guaranteed payment. Countable income lowers it, and many states add their own supplement.
- SSDI amounts are averages. Your SSDI benefit is based on your own earnings record, so it can be higher or lower.
Can You Get Both SSI and SSDI?
Yes, if you qualify for both. USA.gov says, "Depending on your eligibility, you may be able to collect SSDI and SSI benefits at the same time." SSA calls these beneficiaries "concurrent," meaning they are eligible for disability benefits under both programs.
The catch is that SSDI counts as unearned income for SSI. Your SSDI payment is subtracted (after any exclusions) from the SSI federal benefit rate, so the two together don't simply add up. You'd also need to meet SSI's income and resource limits. SSA's SSI overview notes that you may file a separate application for each program so eligibility can be determined for each.
How Do SSDI and SSI Connect to Medicare and Medicaid?
SSDI and Medicare. SSA's Red Book says, "Medicare entitlement begins after you have received SSDI for 24 months." Counting the five-month waiting period, that means a stretch of time between when your disability begins and when Medicare starts. For more on the program, see our guide to who qualifies for Medicare.
SSI and Medicaid. SSA's SSI overview says, "In most States, SSI recipients can also get medical assistance (Medicaid)," which helps pay for hospital stays, doctor visits, prescriptions and other health costs. Medicaid is a joint federal-state program, and SSA notes that states have options regarding eligibility and services, so the rules depend on where you live.
If you have Medicare and a limited income. Our guide to Medicare Savings Programs explains the state programs that can help with Medicare costs. FinancialAdviser.com isn't connected with the federal Medicare program; for Medicare questions, call 1-800-MEDICARE.
What Happens to SSDI at Full Retirement Age?
SSDI ends at full retirement age, but the money doesn't stop. SSA says, "Your disability benefits automatically convert to retirement benefits, but the amount remains the same."
This matters for retirement planning in a few ways:
- Your claiming decision is different. If you're on SSDI, you're already receiving a benefit based on your earnings record, and it becomes your retirement benefit at full retirement age. If you're not disabled, our guide to when to claim Social Security and our Social Security claiming age calculator can help you compare ages.
- SSI isn't tied to full retirement age. SSI eligibility is based on being 65 or older, blind or disabled, plus limited income and resources.
- Other benefits still matter. SSA's SSI overview notes that many people eligible for SSI may also be eligible for Social Security benefits, so it's worth checking both as you near retirement age.
How Do You Apply for SSI or SSDI?
USA.gov says you can apply "online, by phone, or in person."
- SSDI: Apply online through SSA, or call SSA at 1-800-772-1213 (TTY 1-800-325-0778) to make an appointment. SSA says completing an Adult Disability Report ahead of time can speed up the process.
- SSI: Start at ssa.gov/apply/ssi, or call the same SSA number.
- Both: SSA's SSI overview says you may file a separate application for each program so eligibility can be determined for each.
If you're helping a family member through this, our guide to whether Social Security pays for funerals covers another Social Security benefit question.
The Bottom Line
The difference between SSI and SSDI is the basis for eligibility. SSDI is earned through work and Social Security taxes, pays an average of $1,701 a month after the 2027 COLA (SSA estimate), and leads to Medicare after 24 months of benefits. SSI is for people 65 or older, blind or disabled with limited income and resources ($2,000 for an individual, $3,000 for a couple), pays up to a federal standard of $1,029 a month in 2027, and in most states comes with Medicaid. You may be able to get both at the same time, and SSDI turns into a retirement benefit of the same amount at full retirement age.
This article is general education, not individualized financial, legal or benefits advice. Check your own situation with the Social Security Administration.
Frequently asked questions
What is the main difference between SSI and SSDI?
SSDI is based on your work history: you need a qualifying disability and enough work credits from jobs where you paid Social Security taxes. SSI is needs-based: it doesn't require a work history, and it's for people who are 65 or older, blind or disabled and have limited income and resources. SSDI is paid from the Social Security disability trust fund; SSI is paid from general tax revenues.
Can you get both SSI and SSDI at the same time?
Yes, depending on your eligibility. SSA calls people who qualify for both programs "concurrent" beneficiaries. Social Security benefits count as unearned income for SSI, so your SSDI payment is subtracted (after any exclusions) from the SSI federal benefit rate. You may file a separate application for each program so eligibility can be determined for each.
How much is SSI in 2027?
The SSI federal payment standard is $1,029 a month for an individual and $1,544 for a couple in 2027, up from $994 and $1,491 in 2026. Increased SSI payments begin on December 31, 2026. Your own payment can be lower if you have countable income, and some states add a supplement.
Does SSDI come with Medicare?
Yes, after a wait. SSA says Medicare entitlement begins after you have received SSDI for 24 months. For SSI, SSA says that in most states SSI recipients can also get Medicaid.
What happens to SSDI when you reach full retirement age?
SSA says your disability benefits automatically convert to retirement benefits when you reach full retirement age, and the amount stays the same. The switch is automatic.
Sources
- SSA: 2027 Social Security Changes (COLA Fact Sheet)
- SSA: Cost-of-Living Adjustment (COLA) Information for 2027
- SSA: How Does Someone Become Eligible? (Disability Benefits)
- SSA: Understanding Supplemental Security Income (SSI) Overview, 2026 Edition
- SSA Red Book: Overview of Our Disability Programs
This guide is general information, not personal advice. Your situation may differ, so consider talking with a qualified professional, such as a fiduciary financial adviser, CPA or licensed agent, before making a decision.
Keep reading
