Social Security Credits Are Based on Your Earnings, Not Years Worked

SSDI (Social Security Disability Insurance) requires you to have earned enough work credits before you became disabled. A work credit is not a year of work — it is a measure of how much you earned in a calendar year. You earn credits by paying Social Security taxes on your wages or self-employment income, and Social Security tracks these credits in your account.

In 2024, you earn one credit for every $1,730 of wages or self-employment income you make. You can earn a maximum of four credits per year, no matter how much you earn above that threshold. This means you do not need to work all year to get four credits — you could earn all four in a few months if your income is high enough.

The dollar amount that triggers each credit changes every year based on national wage averages. Social Security publishes the new amount in October for the following year. If you earned $6,920 in 2024, for example, you would have earned four credits that year (one for each $1,730). If you earned $3,460, you would have earned two credits.

Key Takeaways

  • You need 40 work credits total to be insured for SSDI, with at least 20 of those credits earned in the 10 years before you became disabled.
  • Work credits are earned based on income, not time — you can earn up to four credits per year, and the income threshold changes annually.
  • Self-employment income counts toward work credits the same way wages do, after you subtract the self-employment tax deduction.
  • Social Security calculates your credits automatically when you report your earnings; you do not need to do anything to "earn" them beyond paying taxes.
  • Your Social Security Statement shows exactly how many credits you have earned in each year, so you can verify the record is correct.

The Two-Part Credit Requirement for SSDI

SSDI has a two-part credit test. First, you must have earned 40 work credits total during your working life. Second, you must have earned at least 20 of those credits in the 10 years before you became disabled. Both conditions must be met.

The second requirement is the one that disqualifies many younger workers. If you became disabled at age 28 but had not worked much in the past 10 years, you might have 40 total credits from earlier work but only 8 credits in the recent 10-year window. You would not meet the SSDI test, even though you had worked enough overall.

The 10-year window is measured from the date you became disabled or the date you filed for SSDI, whichever is earlier. If you became disabled in March 2024, Social Security looks back to March 2014 and counts forward. Any credits earned before March 2014 do not count toward the 20-credit requirement, even if you have 40 total credits.

How Self-Employment Income Counts Toward Credits

If you are self-employed, your net self-employment income counts toward work credits the same way wages do. You must have paid self-employment tax (Social Security and Medicare tax on your business income) for the credits to count.

Self-employment tax is calculated on your net profit — your business income minus business expenses. When you file your tax return, you report this on Schedule C (for sole proprietors) or Schedule F (for farmers). Social Security uses the net profit figure from your tax return to determine how many credits you earned that year.

The income threshold for each credit is the same whether you are an employee or self-employed. In 2024, you need $1,730 in net self-employment income to earn one credit. If your net profit was $6,920, you earned four credits. If you had a loss or very low income, you earned zero credits that year.

Checking Your Work Credits on Your Social Security Statement

You can see exactly how many credits you have earned in each year by viewing your Social Security Statement. This is a record that shows your earnings history and the credits you have earned year by year. You can create an account at ssa.gov and view your statement online at no cost.

Your statement lists your earnings from age 18 forward and shows the number of credits you earned in each year. It also shows your estimated SSDI benefit amount if you became disabled today. This estimate is based on your current credit count and your average earnings record.

Check your statement for errors before you file for SSDI. If Social Security has recorded lower earnings than you actually made in a particular year, you can request a correction. You will need tax returns or W-2 forms to prove the correct amount. Corrections can take several months, so report errors as soon as you notice them.

What Happens If You Do Not Have Enough Credits

If you do not have 40 total credits or do not have 20 credits in the past 10 years, you do not meet the credit requirement for SSDI. Social Security will deny your claim based on insufficient work history.

If you are close to meeting the requirement, you may be able to wait and reapply later. For example, if you have 38 credits and are still working, you could earn two more credits in the next year or two and then file. However, if you are already disabled and unable to work, waiting may not be an option.

If you do not have enough credits for SSDI, you may be able to receive Supplemental Security Income (SSI) instead, which is a needs-based program that does not require work credits. SSI has different rules and income limits. You can file for both SSDI and SSI at the same time if you think you might be may be able to access for either one.

How Credits Affect Your Benefit Amount

Work credits determine whether you are insured 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 earnings record over your entire working life.

Social Security uses your 35 highest-earning years to calculate your PIA. If you have fewer than 35 years of earnings, Social Security counts zero-earnings years to fill out the 35. This is why having more work history generally results in a higher benefit, but the relationship is not one-to-one. Earning more in a single year raises your average, but it does not raise your benefit proportionally.

Your benefit amount is also adjusted for cost-of-living increases (COLA) each year. The COLA is the same for all beneficiaries and is based on inflation, not on your individual earnings or credits.

Credits for Spouses and Children on Your SSDI Record

If you are approved for SSDI, your spouse and unmarried children under age 19 (or 19 if still in high school) may be able to receive benefits based on your work record. They do not need their own work credits to receive these benefits — they are may be able to access based on your credits and your relationship to them.

A spouse at full retirement age receives 50 percent of your benefit amount. A spouse under full retirement age receives a reduced amount. Each child receives 50 percent of your benefit amount. There is a family maximum — the total amount paid to all family members cannot exceed 150 to 180 percent of your benefit, depending on your situation.

These family members do not need to have worked or earned credits themselves. Their may be able to access is entirely based on your work record and your SSDI approval.

Frequently Asked Questions

Can I earn work credits after I become disabled?

If you continue to work after becoming disabled, you can still earn work credits. However, if your earnings are high enough, you may lose SSDI benefits due to work incentives and earnings limits. The credits you earn do not change your SSDI benefit amount, but they may affect your may be able to access for other benefits later.

What if I worked in another country — do those credits count?

Work you did outside the United States generally does not count toward Social Security credits unless you paid Social Security taxes on that income. Some countries have agreements with the United States that allow work credits to be combined, but this is rare. Contact Social Security directly if you have worked abroad.

Do I need to have worked recently to get SSDI?

You do not need to have worked recently, but you must have earned at least 20 credits in the 10 years before you became disabled. If you became disabled 15 years ago and have not worked since, you would not meet the recent work requirement, even if you had 40 total credits from earlier work.

What if Social Security says I have the wrong number of credits?

Request a detailed earnings record from Social Security and compare it to your tax returns and W-2 forms. If there is a discrepancy, file a request for correction with your local Social Security office. You will need documents showing your actual earnings for the year in question.

Do volunteer work or unpaid caregiving count toward work credits?

No. Work credits are earned only through paid work on which you pay Social Security taxes. Volunteer work, caregiving for family members, or other unpaid work does not generate work credits, even if it is full-time.