The Basic Number: 40 Credits, With a Catch

You need 40 work credits total to may have access to for SSDI, but the rule is not quite that straightforward. You must earn at least 20 of those 40 credits in the 10 years before you become disabled. If you become disabled before age 24, the rules are different—you may need as few as 6 credits earned in the 3 years before disability began.

A work credit is not the same as a paycheck. You earn one credit for every $1,550 of wages you report to Social Security in a calendar year (this dollar amount changes each year, so the threshold varies). You can earn a maximum of 4 credits per year, no matter how much you earn. This means you cannot bank extra credits by working overtime or earning more in one year.

The 10-year window matters because Social Security is checking whether you have worked recently enough. If you stopped working 15 years ago and then became disabled, you would not meet the requirement even if you had 40 credits total, because fewer than 20 of them fall within the last 10 years.

Key Takeaways

  • You need 40 total work credits, with at least 20 earned in the 10 years before you become disabled.
  • One work credit is earned for approximately $1,550 in annual wages reported to Social Security; the exact amount changes yearly.
  • You can earn no more than 4 credits per year, so the minimum time to build 40 credits is 10 years of work.
  • If you become disabled before age 24, you may need only 6 credits earned in the 3 years before your disability began.
  • Self-employment income counts toward work credits the same way wages do, as long as you report it to Social Security.

How Credits Add Up Over Time

Because you earn credits based on annual earnings rather than hours worked, the path to 40 credits depends on how much you earn each year, not how long you work. If you earn $1,550 or more in a calendar year, you get 1 credit. If you earn $3,100 or more, you get 2 credits. If you earn $4,650 or more, you get 3 credits. If you earn $6,200 or more, you get 4 credits—the maximum for that year.

This means a full-time worker earning minimum wage will typically earn 4 credits per year. A part-time worker earning less may earn only 1 or 2. The dollar thresholds shift each January based on national wage trends, so the amount you need to earn for each credit is slightly different every year.

To reach 40 credits, you need roughly 10 years of work at a level that earns you 4 credits per year. However, you do not need those 10 years to be consecutive. If you worked 5 years, took time off, then worked another 5 years, you would still have 40 credits. What matters is the total count and whether at least 20 fall within the 10-year window before disability.

The Recent Work Requirement: Why the 10-Year Window Exists

The 10-year window is Social Security's way of checking that you were recently attached to the workforce. The program assumes that if you have not worked in over a decade, your disability may not be work-related, or you may have already recovered and returned to work.

Here is how it works in practice: if you became disabled in 2024, Social Security counts back to 2014. Any credits you earned before 2014 do not count toward the "20 credits in the last 10 years" requirement, even though they count toward your total of 40. So if you had 25 credits from 1990 to 2000, then worked again from 2015 to 2024 and earned 20 credits, you would have 45 credits total—but only 20 in the required window. You would meet the requirement.

If instead you had 30 credits from 1990 to 2000, then did not work again until 2024, you would have 30 total credits but zero in the last 10 years. You would not meet the requirement, even though you have worked before.

Younger Workers and the Different Rules

If you become disabled before age 24, you do not need 40 credits. Instead, you need only 6 credits earned in the 3 years when ready before your disability began. This recognizes that younger workers have not had time to build a long work history.

Between ages 24 and 31, the rules transition. You need 20 credits earned in the 10 years ending when your disability began. At 31 and older, you need the full 40 credits with 20 in the last 10 years.

These age-based rules explore only to you as a worker. If you are explore for benefits based on a parent's or spouse's work record, different rules explore—you do not need your own credits at all.

Self-Employment and Work Credits

If you are self-employed, you earn work credits the same way: based on your net self-employment income reported to Social Security through your tax return. You must report at least $1,550 in net self-employment income in a year to earn 1 credit. The thresholds for 2, 3, and 4 credits are the same as for wage earners.

Self-employed people often have irregular income, so some years you may earn 4 credits and other years none. This is fine—Social Security counts only the years you meet the threshold. If you have been self-employed for 15 years but only 10 of those years had income above $1,550, you have 40 credits from those 10 years.

You must file taxes and report your self-employment income to Social Security for the credits to count. If you work under the table or do not file, Social Security has no record of your earnings and cannot count them.

What Happens If You Do Not Have Enough Credits

If you do not have 40 total credits, or if you do not have 20 credits in the last 10 years, you cannot receive SSDI based on your own work record. However, you may be able to receive benefits based on someone else's record—a parent, spouse, or ex-spouse—if you meet other requirements.

You can also check your work history at any time by creating an account on ssa.gov and viewing your Social Security Statement. This shows the credits you have earned each year and your total count. If the record is wrong, you can request a correction by providing W-2s or tax returns as proof.

If you are close to having enough credits, it may be worth continuing to work if you are able to do so. Each year you work and earn above the threshold adds another credit. However, if your condition prevents you from working, you can still explore with the credits you have.

How Social Security Verifies Your Credits

Social Security does not ask you to prove your credits when you explore. The agency pulls your earnings record from the taxes you and your employers have paid over the years. Your employer reports your wages to Social Security through payroll tax withholding, and you report self-employment income through your tax return.

This means your credits are already in the system. When you explore for SSDI, Social Security straightforward counts the credits in your record and checks whether you meet the requirement. If there is a discrepancy—for example, an employer did not report your wages—you can provide W-2s or tax returns to correct it.

The earnings record Social Security maintains is the same one used to calculate your benefit amount. Higher lifetime earnings mean a higher monthly benefit, so it is worth making sure your record is accurate even if you already have enough credits.

Frequently Asked Questions

Can I earn work credits while receiving unemployment benefits?

No. Work credits are based on wages you earn or self-employment income you report. Unemployment benefits are not wages, so they do not count toward credits. However, you can work part-time while receiving unemployment in some states, and any wages from that work would count.

Do volunteer hours or unpaid work count as work credits?

No. Work credits are based only on wages reported to Social Security or self-employment income reported on your tax return. Volunteer work, family work without pay, or informal work does not generate credits, even if you worked many hours.

What if I worked in another country before moving to the United States?

Work you did in another country generally does not count toward SSDI credits. However, the United States has agreements with some countries that allow credits earned there to count. You would need to contact Social Security directly to find out whether your country has such an agreement and provide documentation of your foreign work.

If I have 40 credits but they are all from more than 10 years ago, can I still get SSDI?

No. You need at least 20 of your 40 credits to be earned within the 10 years before you became disabled. If all your credits are older than that, you do not meet the recent work requirement. You would need to work again and earn new credits to become may be able to access.

Do credits expire or go away if I do not use them?

No. Once you earn a work credit, it stays on your record permanently. However, only credits earned within the 10-year window before disability count toward the recent work requirement. Credits older than 10 years still count toward your total of 40, but they do not satisfy the recency rule.