Social Security looks back at your entire work history, but only counts years where you earned enough to be credited

SSDI uses a work credit system, not a straightforward count of years. You earn credits by working and paying Social Security taxes. The number of credits you need depends on your age when you become unable to work — younger workers need fewer credits than older ones. Social Security does not look at only the last five years or ten years; it examines your entire record from age 21 onward, but only the years where you earned enough money count toward the total.

A work credit is earned when you make a certain amount of money in a calendar year. In 2024, you earn one credit for each $1,705 you make, up to a maximum of four credits per year. This dollar amount changes each year. The total number of credits you need to be found disabled ranges from 20 to 40, depending on how old you are when you stop working.

Key Takeaways

  • You need between 20 and 40 work credits to may have access to for SSDI, with the exact number based on your age when you became unable to work.
  • One work credit is earned for each $1,705 you earn in 2024 (the amount changes yearly), up to four credits per year.
  • Social Security reviews your entire work history from age 21 onward, but only years where you earned enough money count as credited years.
  • If you stopped working at age 24, you need only 20 credits; if you stopped at age 31 or older, you typically need 40 credits.
  • Your work history is shown on your Social Security Statement, which you can view online or request by mail.

How Many Credits You Actually Need

The number of credits required depends on your age when your disability began. If you became unable to work before age 24, you need only 20 credits — roughly five years of full-time work. If you became unable to work between ages 24 and 30, you need one credit for each year from age 21 to the year you stopped working, with a minimum of 20 credits.

At age 31 and older, you need 40 credits total. This does not mean 40 years of work — because you can earn up to four credits per year, you could earn 40 credits in as few as 10 years of full-time work. However, Social Security also requires that you have earned at least 20 of those 40 credits in the 10 years before you became unable to work. This is called the recency requirement.

The recency requirement is why a person who worked steadily from age 22 to 32, then stopped working, might not may have access to at age 50. Even though they have 40 credits, they do not have 20 credits earned in the past 10 years.

What "Earned" Means in Social Security's Records

A year counts as a credited year only if you earned enough money to be credited for it. In 2024, you need $1,705 in earnings to receive one credit. You do not need to earn $6,820 (four times that amount) to get four credits in one year — you earn one credit at each $1,705 threshold, up to a maximum of four per calendar year.

Self-employment income counts the same way as wages. If you were self-employed, Social Security looks at your net profit (income minus business expenses) reported on your tax return. Unearned income — such as interest, dividends, rental income, or gifts — does not count toward work credits.

The earnings threshold changes every year because it is tied to the national average wage. A year you worked in 2010 required different earnings than a year you worked in 2024. Social Security automatically adjusts the historical threshold when calculating your record, so you do not have to do the math yourself.

How Social Security Reviews Your Complete Work History

When you file for SSDI, Social Security obtains your complete earnings record from the Internal Revenue Service. This record goes back to 1951 or to age 21, whichever is later. Social Security does not ignore old years — it counts every year from age 21 onward where you earned enough to be credited.

However, the recency requirement means that recent work matters more than distant work. If you worked steadily from age 22 to 35, then did not work again, those early credits still count toward your total of 40. But you would fail the recency test because you do not have 20 credits earned in the past 10 years.

Your earnings record is available on your Social Security Statement, which you can view at ssa.gov by creating a my Social Security account. The statement shows each year's earnings and the credits you received. If you see an error — such as a year where you worked but no earnings are recorded — you can request a correction by contacting Social Security with documentation like W-2 forms or tax returns.

Why Recent Work Matters More Than Old Work

The recency requirement exists because Social Security assumes that if you have not worked in many years, you may not be currently attached to the workforce. A person who worked from age 22 to 32, then spent 18 years not working, is treated differently than someone who worked until age 50.

The rule is: you must have earned at least 20 of your 40 credits in the 10 years when ready before you became unable to work. If you became unable to work on January 1, 2024, Social Security looks at credits earned from January 1, 2014 onward. Credits earned before 2014 do not count toward the recency requirement, even though they count toward your total of 40.

This is why a person who worked part-time or took time off for caregiving might not may have access to, even if they have 40 lifetime credits. If the break in work means they do not have 20 credits in the past 10 years, they fail the recency test.

What Happens If You Do Not Have Enough Credits

If you do not have the required number of credits, or if you fail the recency test, you are not found disabled under SSDI rules. This does not mean you have no options — you may be able to file for Supplemental Security Income (SSI) instead, which is a needs-based program that does not require work credits. SSI has different rules and looks at your income and assets, not your work history.

If you are close to having enough credits, you might be able to delay your SSDI claim until you have earned more credits through continued work. Each year you work and earn enough to be credited adds one to four credits to your record. However, if your medical condition prevents you from working, this option is not realistic.

You can request a detailed review of your work history and credit count by contacting Social Security directly. They will tell you exactly how many credits you have, how many you need, and whether you meet the recency requirement. This information is free and does not commit you to filing.

How to Check Your Own Work Credits

You do not have to wait until you file to see your credits. You can create a my Social Security account at ssa.gov and view your earnings record and work credits when ready. The statement shows each year from age 21 onward, the earnings recorded for that year, and the number of credits you received.

If you do not use the online account, you can request a paper Social Security Statement by calling 1-800-772-1213 or visiting a local Social Security office. The statement arrives in the mail within two weeks. Keep a copy for your records — you will need it if you file for SSDI and Social Security questions your work history.

If you see earnings listed that you do not recognize, or if a year you worked shows no earnings, contact Social Security when ready with documentation. Corrections can take several months, so do not wait until you file for SSDI to fix errors.

Frequently Asked Questions

Do I need 40 credits if I became disabled at age 28?

No. At age 28, you need one credit for each year from age 21 to age 28 — that is seven credits minimum. However, you still must have earned at least 20 of those credits in the past 10 years. If you worked steadily from age 21 to 28, you would have more than enough.

If I worked part-time and earned only $1,705 per year, do I get one credit or four?

You get one credit. You earn one credit for each $1,705 threshold you cross, up to four per year. If you earned exactly $1,705, you earned one credit. You would need to earn $6,820 in a single year to earn four credits.

Can I use work credits I earned 30 years ago?

Yes, they count toward your total of 40 credits. However, they do not count toward the recency requirement, which looks only at the past 10 years. You need both: enough total credits and enough recent credits.

What if I worked overseas or for a foreign government?

Work performed outside the United States generally does not count toward Social Security credits unless you were a U.S. citizen or resident alien and paid U.S. Social Security taxes. Some countries have agreements with Social Security that allow credits to transfer. Contact Social Security to report foreign work.

Does military service count as work credits?

Military service from 1957 onward counts as work credits if you were on active duty. Social Security automatically credits you for this service — you do not have to report it separately. Service before 1957 may count under different rules; contact Social Security if you served before that year.