The Basic Number: 40 Credits, With a Catch
You need 40 work credits total to receive Social Security Disability Insurance (SSDI). That sounds like a fixed answer, but it is not quite. The real requirement depends on your age when you become disabled.
Social Security counts work credits based on your earnings history. You earn one credit for every $1,550 you earn in a year (this dollar amount changes each year, so the threshold is different depending on when you worked). You can earn a maximum of four credits per year, no matter how much you earn above that threshold.
If you are 31 or older when you become disabled, you need those 40 credits. If you are younger, the requirement drops. This is where the catch matters: Social Security also requires that you earned at least 20 of those credits in the 10 years before you became disabled. This second rule is called the recency requirement, and it is the one that actually stops younger workers from getting SSDI.
Key Takeaways
- You need 40 total work credits, but if you are under 31 when you become disabled, you may need fewer.
- At least 20 of your credits must come from the 10 years right before you became disabled, regardless of your age.
- You earn one credit for every $1,550 you earn in a year (the dollar amount changes annually), up to four credits per year.
- Social Security looks at your actual W-2 earnings history or self-employment tax records, not at how long you worked.
How the Age Rule Changes Your Credit Requirement
The number of credits you need shrinks as you get younger at the time you become disabled. Here is how it breaks down:
| Age When Disabled | Total Credits Needed | Credits Needed in Last 10 Years |
|---|---|---|
| 31 or older | 40 | 20 |
| 24 to 30 | Between 20 and 39 | 20 |
| 22 to 23 | 12 | 12 |
| 21 to 22 | 8 | 8 |
| 20 or younger | 6 | 6 |
The recency requirement is the real barrier for younger workers. If you are 25 and become disabled, you technically need only about 20 credits total, but all 20 must come from the past 10 years. That means you need to have worked and earned enough in the last decade. A gap of a few years in your work history can make you ineligible, even if you have worked before.
What Counts as a Work Credit
A work credit is tied to money you earned and paid Social Security taxes on. If you are an employee, your employer withholds Social Security tax from your paycheck automatically. If you are self-employed, you pay Social Security tax when you file your taxes. Either way, Social Security tracks your earnings through your Social Security number.
The dollar threshold for earning a credit changes every year because it is tied to the national average wage. In 2024, you need $1,550 in earnings to get one credit. In 2025, the amount is $1,630. Social Security publishes the current year's amount on its website each October.
Work you did without paying Social Security taxes does not count. This includes cash jobs where taxes were not withheld, volunteer work, or work done before you had a Social Security number. If you worked in a job covered by a different retirement system (some government jobs, for example), those years may not count toward SSDI, though they might count toward a different benefit.
How Social Security Verifies Your Credits
You do not have to do anything to earn credits. Social Security receives reports from your employer (or from you, if you are self-employed) showing how much you earned each year. The agency automatically converts your earnings into credits and stores them in your record.
When you explore for SSDI, Social Security pulls your complete earnings history and counts your credits. You can see your own record by creating an account on ssa.gov and viewing your Social Security Statement. The statement shows your year-by-year earnings and the credits you have earned so far.
If you think there is an error in your record—if you worked in a year that does not show up, or if the earnings amount is wrong—you can contact Social Security to correct it. You will need to provide proof, such as old tax returns, W-2 forms, or pay stubs. Social Security has a time limit for correcting old records, so if you spot an error, report it as soon as you can.
What Happens If You Do Not Have Enough Credits
If you do not have enough credits when you explore for SSDI, Social Security will deny your claim based on your work history. This does not mean you cannot get disability support—it means you may be looking at a different program.
Supplemental Security Income (SSI) is a separate program that does not require work credits. Instead, it looks at your current income and assets. If you have very little income and resources, you may be able to get SSI even if you have never worked or have very few credits. The monthly payment is usually lower than SSDI, and the rules are stricter, but it is an option if SSDI is not available to you.
If you are close to having enough credits—say you need just a few more—it may be worth waiting if you can. Each year you work and earn above the threshold adds another credit to your record. Some people delay explore for SSDI specifically to build up their credit count, though this only works if you are still able to work.
Credits for Spouses and Children
Your work credits are yours alone. Your spouse or children cannot use your credits to meet their own requirements if they explore for benefits. However, if you become disabled and are approved for SSDI, your spouse and children may be able to get benefits based on your record—they do not need their own work credits to do so.
This is called a family benefit. Your spouse (at any age if caring for your child, or at 62 or older otherwise) and your unmarried children under 19 (or up to 22 if in high school full-time) can each receive a portion of your benefit amount. Their may be able to access depends on their relationship to you and their age, not on their own work history.
Frequently Asked Questions
Can I get SSDI if I have not worked in five years?
It depends on your age and how many credits you earned before the gap. If you are 31 or older, you need 20 of your 40 credits from the past 10 years—a five-year gap does not automatically disqualify you if you earned enough before it. If you are younger, the recency rule is stricter. Contact Social Security with your age and work history for a specific answer.
Do military service years count as work credits?
Military service before 1968 may count toward SSDI if you were on active duty. Service after 1968 does not automatically create credits, but you earn credits the same way as any other worker if you were paid and Social Security taxes were withheld. Check your Social Security Statement to see what is recorded for your service years.
What if I worked under different names or Social Security numbers?
Report this to Social Security as soon as possible. Earnings under different names or numbers will not show up on your record and will not count toward your credits. Social Security can sometimes consolidate earnings records, but you need to provide proof of the connection and request the correction in writing.
Do I need 40 credits if I am already receiving retirement benefits?
No. If you are already on Social Security retirement, you do not need to meet the work credit requirement again to switch to SSDI. Social Security will convert your retirement benefit to a disability benefit if you become disabled and meet the medical requirements, as long as you were insured when the disability began.
Can I earn credits faster by working more hours?
No. You earn a maximum of four credits per year no matter how much you earn. Working 60 hours a week does not earn you more credits than working 20 hours a week—what matters is the total amount you earn in the year, and the cap is four credits per year.