You need work credits and a medical condition to receive SSDI
Becoming SSDI-insured means you have earned enough work credits through employment and have a medical condition that meets Social Security's definition of disability. You cannot receive SSDI payments based on disability alone—you must have both the work history and the medical evidence. The Social Security Administration (SSA) does not make you SSDI-insured through an process; instead, you become insured automatically as you work and pay Social Security taxes.
The number of work credits you need depends on your age when your disability begins. Younger workers need fewer credits. Once you have enough credits, you remain insured for disability even if you stop working, though the length of time you stay insured varies. If your condition improves and you return to work, you can lose and regain insured status depending on how many credits you accumulate.
Key Takeaways
- You earn one work credit for every $1,550 of wages you earn in a year (the dollar amount changes annually), up to a maximum of four credits per year.
- Most workers need 40 work credits total, with at least 20 earned in the 10 years before disability begins.
- Younger workers—those under 24—may need as few as 6 credits if they became disabled while still young.
- Work credits are tied to your Social Security account and are recorded automatically when your employer reports your wages; you do not need to do anything to earn them.
- Having work credits does not mean you will receive SSDI; you must also have a medical condition that meets SSA's strict definition of disability.
How work credits are earned and counted
You earn work credits by working in a job covered by Social Security and having your employer deduct Social Security taxes from your paycheck. Self-employed workers also earn credits when they pay self-employment tax. Each year, SSA sets a dollar threshold; in 2024, you earn one credit for every $1,550 of wages you earn, up to four credits per year. This means you could earn all four credits in a single month if your income is high enough, or you could spread them across the year.
The dollar amount that triggers a credit increases most years. SSA publishes the current year's threshold on its website and in the Social Security Handbook. Your employer reports your wages to SSA automatically through payroll tax filings, so you do not need to track or report credits yourself. You can view your work credit record by creating a my Social Security account online and checking your earnings record.
Work credits earned in one year do not roll over or expire if you do not use them. Once you have earned a credit, it stays on your record permanently. This means you can work for several years, stop working, and still have those credits count toward SSDI insured status later.
Work credit requirements by age at disability onset
The number of credits you need to become SSDI-insured depends on how old you are when your disability begins. SSA uses a sliding scale that favors younger workers, because they have had less time to build a work history.
| Age at Disability Onset | Total Credits Needed | Credits Needed in Last 10 Years |
|---|---|---|
| 31 or older | 40 | 20 |
| 24–30 | Varies: 1 credit for every year from age 21 to disability onset, minimum 6 | Half the total credits needed |
| Under 24 | 6 | Not applicable |
The "last 10 years" rule means that for most workers, your credits must be recent. If you worked steadily from age 22 to 30 and then stopped, you would have 40 credits, but only 8 of them would fall within the 10-year window before your disability began at age 40. You would not meet the recency requirement and would not be SSDI-insured. This is why SSA looks at both total credits and recent work history.
If you became disabled before age 24, you need only 6 credits total, and there is no recency requirement. This recognizes that young workers have not had time to build a substantial work history. If you are between 24 and 30 at disability onset, the requirement scales up gradually—you need roughly one credit for each year you have been an adult.
What happens after you become SSDI-insured
Once you have enough work credits, you remain SSDI-insured for disability purposes even if you stop working. However, your insured status can expire if you do not work enough in the years after your disability begins. SSA calls this the duration of insured status, and it depends on your age and work history.
Generally, if you became disabled at age 31 or older and have 40 credits with 20 from the last 10 years, you will remain insured for at least several years without additional work. The exact length varies, but SSA publishes a table showing how long your insured status lasts based on your age and credits. If your insured status expires and you want to return to SSDI later, you would need to earn new work credits through employment.
If you work while receiving SSDI, you can earn additional work credits. These credits do not increase your SSDI payment amount, but they can extend your insured status or help you may have access to for other benefits later, such as retirement benefits or benefits for a spouse or child.
The difference between insured status and disability approval
Being SSDI-insured is a necessary condition for receiving SSDI, but it is not sufficient on its own. You must also have a medical condition that SSA recognizes as a disability. SSA's definition is strict: your condition must prevent you from doing any substantial work for at least 12 months or result in death. Having work credits does not mean SSA will find you disabled.
When you file for SSDI, SSA first checks whether you are insured. If you do not have enough work credits or your credits are not recent enough, your claim will be denied on non-medical grounds before SSA even reviews your medical evidence. If you are insured, SSA then evaluates your medical condition against its Listing of Impairments or determines whether your condition is severe enough to prevent substantial work.
Some people become SSDI-insured but are denied SSDI because their medical condition does not meet SSA's disability standard. Others have a severe medical condition but are not insured because they do not have enough work credits. Both the work history and the medical evidence must be present.
Work credits and other Social Security benefits
Work credits serve multiple purposes in the Social Security system. The same credits that make you SSDI-insured also count toward retirement benefits and survivor benefits. If you have 40 credits by age 62, you can claim reduced retirement benefits. If you have 40 credits and become disabled before retirement age, you can claim SSDI. If you die with enough credits, your family members may be able to claim survivor benefits on your record.
The recency requirement differs by benefit type. For SSDI, you generally need recent work (20 credits in the last 10 years). For retirement benefits, recency does not matter—you can claim at 62 with 40 credits earned at any point in your life. This is why some people who stopped working years ago can still claim retirement benefits but would not may have access to for SSDI if they became disabled today.
Checking your work credit record
You can view your work credits and earnings record online through my Social Security, the SSA's find portal. Create an account using your Social Security number, date of birth, and email address. Once logged in, you can see how many credits you have earned each year and your total lifetime credits. The earnings record shows the wages SSA has on file for you, which is the basis for credit calculation.
Review your record for accuracy. If you see missing wages or incorrect amounts, contact SSA to request a correction. You will need to provide documentation such as W-2 forms or tax returns. Errors in your earnings record can affect both the number of credits you receive and the benefit amount you would be paid if you became disabled or reached retirement age.
If you do not have online access or prefer to request a paper copy, you can call SSA at 1-800-772-1213 or visit a local Social Security office. SSA will mail you a Statement of Earnings, which shows your work history and credits.
Frequently Asked Questions
Can I earn work credits from volunteer work or unpaid caregiving?
No. Work credits are earned only through paid employment covered by Social Security or through self-employment income on which you pay self-employment tax. Volunteer work, caregiving for family members, and other unpaid activities do not generate work credits, even if they are full-time.
What if I worked outside the United States?
Work performed outside the U.S. generally does not count toward Social Security credits unless you were a U.S. citizen or resident alien working for a U.S. employer or self-employed in a U.S. business. Some countries have agreements with the U.S. that allow work in those countries to count. Contact SSA to discuss your specific situation.
If I have enough work credits now, will I always be SSDI-insured?
Not necessarily. Your insured status can expire if you do not work enough in the years after your disability begins. The length of time you remain insured depends on your age and the number of credits you have. SSA publishes a table showing duration of insured status; you can ask SSA or check the Social Security Handbook for your specific situation.
Do work credits earned before age 21 count toward SSDI?
Yes, but only if you became disabled before age 24. For workers who become disabled at 24 or older, only credits earned from age 21 onward count. Credits earned before age 21 are not included in the calculation.
If I am denied SSDI, can I reapply after earning more work credits?
If you were denied because you did not have enough work credits, earning additional credits through employment could make you insured in the future. However, if you were denied on medical grounds—meaning SSA found you were insured but your condition did not meet the disability standard—earning more credits will not change that decision. You would need new or worsening medical evidence to have a successful appeal or new claim.