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SSI stands for Supplemental Security Income. It’s a Social Security program that assists people with disabilities. It helps those with low income and few resources.
SSDI stands for Social Security Disability Insurance. This program is based on your work history. People qualify for SSDI by paying Social Security taxes while working.
Many people who cannot work because of a disability hear two similar terms: SSI and SSDI. These can be confusing. A common question is: What is the difference between SSI and SSDI, and which one applies to me?
At Pond Lehocky, our disability attorneys help people understand Social Security disability benefits. We will review your eligibility.
What Is SSI?
SSI stands for Supplemental Security Income. It’s a Social Security program that assists people with disabilities. It helps those with low income and few resources.
SSI benefits are not based on your work history. This means you can qualify even if you have never worked or have worked very little. SSI benefits may be available to:
- Adults with disabilities
- Children with disabilities
- People who are blind
- People with very low income
To qualify, the Social Security Administration looks closely at your finances. This includes your income, savings, and other resources.
What Is SSDI?
SSDI stands for Social Security Disability Insurance. This program is based on your work history. People qualify for SSDI by paying Social Security taxes while working.
If you have worked and paid into Social Security long enough, you may be covered under SSDI. SSDI is for people who:
- Have a medical condition that limits work
- Have earned enough work credits
- Can no longer work full-time
Unlike SSI, SSDI does not depend on how much money you have saved. It depends on your past work.

Overview of the Difference Between SSI and SSDI
The main difference between SSI and SSDI is work history and income:
- SSI is based on financial need.
- SSDI is based on your work record.
Both programs require proof of a qualifying disability. However, the financial rules are very different. Here is a simple way to think about it:
- SSI helps people with little or no income.
- SSDI helps people who worked and paid into Social Security.
How Social Security Defines a Qualifying Disability
For both SSI and SSDI, Social Security uses the same definition of disability. A disability must:
- Be expected to last at least 12 months or result in death
- Prevent you from working full-time
- Limit your ability to do your past work or other work
A diagnosis alone is not enough. The Social Security Administration looks at how your condition affects your daily life. They also consider your ability to work.
Income Rules for SSI
SSI has strict income and resource limits. Social Security looks at:
- Wages
- Other disability benefits
- Savings and bank accounts
- Property other than your home
If your income or resources are above the limit, you may not qualify for SSI. Even small changes in income can affect your SSI benefits.
Because of these rules, SSDI and SSI claims often involve detailed financial reviews.
Payment Amounts for SSI and SSDI
Federal government rules set SSI payments. The amount is the same nationwide, though some states add small supplements.
SSDI payments vary. The amount depends on how much you earned while working and how long you worked. Higher past earnings often lead to higher SSDI payments.
This is another key difference between SSDI and SSI.

Health Insurance Differences
SSDI and SSI also differ when it comes to health coverage. SSI recipients usually qualify for Medicaid right away. Medicaid covers doctor visits, hospital care, and more.
People approved for SSDI usually qualify for Medicare after a waiting period. Medicare coverage typically starts after 24 months of SSDI benefits. This waiting period can be difficult for people with serious health needs.
Can SSI Applicants Also Apply for SSDI?
Yes, some people qualify for both federal programs. This is called concurrent benefits. This may happen when:
- You worked in the past but earned low wages.
- Your SSDI payment is very small.
- Your income still falls below SSI limits.
In these cases, SSI may help add to your SSDI payments.
Why Claims Are Often Denied
Many SSDI and SSI claims are denied the first time. This often happens because Social Security does not have the information it needs.
For those who receive SSI, financial assistance can lead to problems. This is true if income is not reported correctly.
A denial does not mean you are not disabled. It usually means Social Security did not have enough information to approve you. Many people often appeal. They get approved when their records are clear and complete.
Why Medical Records Matter
Medical records are very important for both SSDI and SSI claims. Social Security needs these records to understand how your disabling condition affects you.
What helps:
- Doctor visit notes
- Test results
- Treatment history
- Statements that explain your daily limits
When records show these limits, the SSA can better see why working is hard or impossible.

How Long Does the Process Take?
SSDI and SSI claims often take several months to process. If you need to appeal, the process can take even longer. Delays often happen because:
- Social Security handles many claims
- They request more medical evidence
- They schedule medical evaluations
These steps can slow things down, even when your claim is valid. Being ready from the start and submitting clear information can help reduce delays.
How Our Legal Help Can Make a Difference
Understanding the difference between SSDI and SSI is not always easy. The rules can be confusing, especially when you are already stressed.
Our disability lawyers help with SSI benefits. We focus on clear communication and strong support at every stage. You do not have to pay attorney fees unless you win your case. Call us for a free consultation to get started.
Move Forward with Confidence with Our Disability Lawyers
If you want to know about SSI programs, learning SSDI eligibility requirements is key. Knowing the difference between SSDI and SSI can help you avoid mistakes. It can also protect your income. That’s where an experienced attorney can help SSDI applicants.
With the right info and support, many can access the financial benefits they need. This helps them find greater stability and peace of mind. You will find the support you need from the disability lawyers at Pond Lehocky. Contact us today for a free consultation with an SSDI attorney.