Work credits are the Social Security Administration's way of measuring whether you have worked enough to earn disability coverage

You do not earn SSDI by having a disability alone. The Social Security Administration requires that you have a work history — specifically, that you have paid Social Security taxes through employment for a certain length of time. Work credits are the unit the SSA uses to count that history. You earn one credit for each $1,550 of wages you earn in a calendar year (this dollar amount changes annually). Most people can earn a maximum of four credits per year, one per quarter.

The number of credits you need depends on your age when your disability begins. If you become disabled before age 24, you need only six credits earned in the three years before your disability started. If you are between 24 and 31, you need credits equal to half the quarters that have passed since you turned 21, with a minimum of six. If you are 31 or older, you typically need 40 credits total, with at least 20 of those earned in the 10 years before your disability began. This 20-in-10 rule is the most common threshold for working-age adults.

Key Takeaways

  • You earn one work credit for each $1,550 of wages you pay Social Security taxes on in a calendar year, up to four credits per year.
  • Adults 31 and older typically need 40 total credits, with at least 20 earned in the 10 years before disability begins.
  • Self-employment income counts toward work credits if you report it on your tax return and pay self-employment tax.
  • Once you have earned enough credits, they do not expire — you can may have access to for SSDI years or even decades after you stopped working.
  • The SSA counts credits based on your earnings record, which you can view and correct through your my Social Security account.

How the SSA counts your work history

The SSA pulls your work history from your Social Security earnings record. This record is built from W-2 forms your employers file and from self-employment tax returns you file with the IRS. Every dollar you earn in covered employment — that is, work where you and your employer pay Social Security tax — counts toward your credits. Railroad employees have a separate system through the Railroad Retirement Board, but the credit concept is the same.

Your earnings record is not automatic. You must have a Social Security number, and your employer must report your wages correctly. Errors happen: a name change, a missing digit in your Social Security number, or a typo in your employer's records can cause wages to be credited to the wrong account or not credited at all. This is why the SSA lets you check your earnings record through my Social Security, a free online account. You can see exactly what wages the SSA has on file for each year you worked.

If you find an error, you have a limited window to correct it. Generally, you must report wage errors within three years, three months, and 15 days of the year the wages were earned. If your employer still has records, they can file a corrected W-2 with the IRS, which then updates your Social Security record. If your employer is out of business or records are lost, you may be able to submit other proof — pay stubs, tax returns, bank statements — to the SSA, though this is slower and less certain.

Self-employment and work credits

If you are self-employed, you earn work credits the same way: one credit per $1,550 of net self-employment income in a calendar year, up to four per year. Net self-employment income is what remains after you subtract business expenses. You must report this income on Schedule C (or Schedule F for farming) when you file your federal tax return, and you must pay self-employment tax on it. The self-employment tax is what funds your Social Security account.

Many self-employed people underreport income or do not file tax returns, which means the SSA has no record of their work. If you are self-employed and later become disabled, you will need your tax returns to prove your earnings. The SSA will not accept bank deposits, invoices, or cash-only records as proof of self-employment income for work credit purposes. This is why keeping accurate tax records is essential if you are self-employed and want SSDI coverage.

The 20-in-10 rule for working-age adults

The most important threshold for people who become disabled between ages 31 and retirement age is the 20-in-10 rule: you need 40 work credits total, and at least 20 of those must have been earned in the 10 calendar years before your disability began. This rule exists because the SSA wants to may support that disabled workers have recent work history, not just a distant job from decades ago.

The 10-year window is measured in calendar years, not months. If you became disabled on March 15, 2024, the SSA counts back 10 calendar years to January 1, 2014. Any credits you earned from January 1, 2014, through December 31, 2023, count toward the 20-in-10 requirement. Credits earned before January 1, 2014, count toward your total of 40, but they do not count toward the 20-in-10 threshold.

This rule can disqualify people who worked steadily early in life but then stopped working or worked part-time for many years. For example, if you worked full-time from age 22 to 35 and earned 52 credits, then did not work from age 35 to 50, you would have more than 40 credits total but fewer than 20 in the most recent 10 years. You would not meet the 20-in-10 requirement and would not be found disabled under the standard SSDI rules, even though you have substantial work history.

Credits do not expire once you have earned them

A common misconception is that work credits expire or fade over time. They do not. Once you have earned a credit, it stays on your record permanently. You can become disabled 20 years after your last job and still use credits you earned decades earlier to meet the 40-credit threshold — as long as you also meet the 20-in-10 requirement if you are over 31.

This permanence is why the SSA's earnings record is so important. Even if you have not worked in years, the SSA can look back at your entire work history to count your credits. However, this does not mean you can ignore gaps in your record. If you worked under a different name, in cash jobs that were never reported, or for an employer who did not file W-2s, those earnings will not appear on your record and will not count as credits.

Checking and correcting your work credits

You can view your work credits and earnings record for free through my Social Security at ssa.gov. You will need to create an account using your Social Security number, email address, and identity verification. Once logged in, you can see your earnings history year by year and the number of credits the SSA has recorded for each year.

If you see an error — missing earnings, earnings under the wrong year, or a name mismatch — you should report it to the SSA as soon as possible. You can contact your local Social Security office in person, call the national number at 1-800-772-1213, or use the online message service in your my Social Security account. Bring documentation: W-2s, tax returns, pay stubs, or a letter from your employer stating the dates and amounts you were paid.

If you are explore for SSDI and the SSA finds that you do not have enough work credits, you have the right to request reconsideration. During reconsideration, you can submit additional wage records or documentation. If you still disagree after reconsideration, you can request a hearing before an administrative law judge, where you can present evidence and testimony about your work history.

How work credits affect your SSDI benefit amount

Work credits determine whether you are covered for SSDI, but they do not directly determine how much you receive each month. Your benefit amount is based on your Primary Insurance Amount (PIA), which is calculated from your average indexed monthly earnings over your entire work history. The more you earned and the longer you worked, the higher your PIA and your monthly SSDI payment.

However, there is a floor: if you have very few work credits or very low earnings, your benefit may be reduced or you may not be found disabled under SSDI rules at all. In those cases, you might be found disabled under Supplemental Security Income (SSI), which is a separate needs-based program that does not require work credits. SSI has its own income and resource limits, and the monthly payment is typically lower than SSDI.

Frequently Asked Questions

Can I earn work credits if I am not working right now?

No. Work credits are earned only in the year you actually earn wages or self-employment income and pay Social Security tax on it. If you are not working, you are not earning new credits. However, credits you earned in past years remain on your record permanently.

What if I worked for cash and never reported it to the IRS?

Cash income that was not reported on a tax return and did not have Social Security tax withheld does not create work credits. The SSA can only count earnings that appear on your Social Security earnings record, which comes from W-2s and tax returns filed with the IRS. If you can prove you paid self-employment tax on cash income by showing a tax return, it will count.

Do work credits from my spouse's job count toward my SSDI?

No. Each person's SSDI coverage is based on their own work history and work credits. You cannot borrow or combine credits from a spouse. However, if you are married and your spouse is receiving SSDI or retirement benefits, you may be able to receive benefits as a spouse or family member based on their record, which is a separate program.

If I have 40 credits but fewer than 20 in the last 10 years, can I still get SSDI?

Not under the standard SSDI rules if you are 31 or older. You would need to meet the 20-in-10 requirement. However, you might be found disabled under SSI if your income and resources are low enough, or you could explore whether you meet the requirements for a different disability program.

How often does the dollar amount for one work credit change?

The SSA adjusts the dollar amount each year based on changes in average wages. The amount has increased most years, but the adjustment varies. You can find the current year's amount on the SSA website, and historical amounts are available in the Social Security Handbook.