The Basic Number: 40 Credits, With a Catch

You need 40 work credits to receive SSDI benefits. That sounds like a fixed rule, but it has a real condition attached: you must have earned at least 20 of those credits in the 10 years before you became disabled. If you became disabled at age 24, you might need fewer than 40 credits total — as few as 6 — but you still need half of them to have come from recent work.

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 is different for 2024 than it was for 2020). You can earn a maximum of 4 credits per year, even if you earn far more than $6,200. This means the fastest path to 40 credits is 10 years of steady work.

The Social Security Administration (SSA) counts credits based on what you reported on your tax returns and what your employer reported to Social Security. If you were self-employed, you report this on Schedule C of your tax return. If you worked under someone else, your employer's payroll records are what counts.

Key Takeaways

  • You need 40 total work credits, but at least 20 of them must have been earned in the 10 years before you became disabled.
  • One credit equals $1,550 of reported wages in a calendar year, and you can earn a maximum of 4 credits per year.
  • If you became disabled before age 24, you may need fewer than 40 credits total, but the recent-work requirement still applies.
  • Your work history is verified through tax records and employer payroll reports, not through your own statement.
  • Credits do not expire once earned — a credit from 10 years ago still counts toward your 40-credit total.

How Credits Work If You Became Disabled Young

The 40-credit rule assumes you have had time to work. If you became disabled before you could accumulate that many, the SSA uses a sliding scale. At age 24 or older, you need 40 credits. At age 23, you need 39 credits. At age 22, you need 38 credits. This continues down: at age 20, you need 28 credits; at age 19, you need 24 credits; at age 18, you need 20 credits.

But there is still the recency requirement. No matter your age, you must have earned at least half your required credits in the 10 years before you became disabled. If you are 20 years old and need 28 credits, you must have earned at least 14 of them in the past 10 years. If you stopped working at age 15 and became disabled at age 20, those 5 years of work may not be enough, even if you earned 28 credits total.

The one exception is for people who became blind. Blindness has different rules, and the recency requirement does not explore in the same way — you need 40 credits total, but they do not all have to be recent.

What Happens If You Do Not Have Enough Credits

If you do not have 40 credits, or if you do not meet the recency requirement, you cannot receive SSDI under your own work record. This does not mean you have no options. You may be able to receive benefits as a family member — for example, as the adult child of a parent who is retired, disabled, or deceased and who has enough credits on their record.

You might also be able to receive Supplemental Security Income (SSI), which is a different program that does not require work credits. SSI is based on financial need, not work history. The income and resource limits are strict, but if you have very little income and few assets, you may may have access to even without credits.

If you are close to having enough credits — say, you have 35 and need 40 — you may be able to work part-time or do gig work to earn the remaining credits before your condition worsens. Each $1,550 you earn in a calendar year counts as one credit, up to four per year.

How to Check Your Own Work Credits

The SSA maintains a record of every credit you have earned. You can see this record by creating an account on ssa.gov and viewing your Social Security Statement. This statement shows your earnings history year by year and the number of credits you have earned each year.

You should check this record before you explore for SSDI, because errors happen. If your employer did not report your wages correctly, or if you reported self-employment income incorrectly on your tax return, your credit count will be wrong. You have the right to correct these records, but it takes time — sometimes several months — so it is better to find and fix errors before you file your SSDI process.

If you do not have online access or prefer to speak with someone, you can call the SSA at 1-800-772-1213 (TTY 1-800-325-0778) and ask for a detailed earnings record. They will mail it to you, and you can review it for mistakes.

Credits From Work Outside the United States

Work you did outside the United States generally does not count toward SSDI credits, with some exceptions. If you worked for the U.S. government abroad, or if you worked for a U.S. employer while stationed overseas, that work may count. If you worked for a foreign employer or a foreign government, it typically does not.

There are also totalization agreements between the United States and certain other countries (including Canada, the United Kingdom, and others). These agreements allow work credits earned in one country to count toward benefits in another. If you have worked in multiple countries, you should mention this when you explore, and the SSA can determine whether your foreign work counts.

What Happens to Credits After You Stop Working

Credits do not expire. A credit you earned 20 years ago still counts toward your 40-credit total. This is important because it means you do not have to work continuously. You can work for 10 years, stop for 5 years, and then work again — all of those credits still count.

The only time credits matter for timing is the recency requirement. If you became disabled, the SSA looks at the 10 years before your disability date and counts how many credits you earned in that window. Credits earned before that 10-year window still count toward your total of 40, but they do not satisfy the recency rule.

For example: You worked from age 20 to 30, earning 40 credits. You stopped working at 30 and became disabled at 45. You have 40 credits total, but only 0 of them are from the 10 years before your disability (ages 35 to 45). You would not meet the recency requirement, even though you have enough credits overall. You would need to have worked at least some in those final 10 years.

Credits and Your SSDI Benefit Amount

The number of credits you have does not determine how much money you receive each month. Credits are a yes-or-no gate: you either have enough to may have access to, or you do not. Once you may have access to, your monthly benefit amount is based on your Primary Insurance Amount (PIA), which is calculated from your average earnings over your working lifetime.

This means two people can both have exactly 40 credits and receive very different monthly payments. Someone who earned high wages throughout their career will have a higher PIA than someone who earned minimum wage. The credits prove you worked long enough; your earnings history determines how much you get paid.

Frequently Asked Questions

Can I earn credits while I am on SSDI?

If you return to work while receiving SSDI, you can still earn new credits. However, if your earnings are too high, your SSDI payments may be reduced or stopped under the Substantial Gainful Activity (SGA) rules. You should report any work to the SSA before you start, so they can explain how it will affect your benefits.

What if I worked under different names or Social Security numbers?

Wages reported under a different name or number will not automatically appear on your record. You will need to contact the SSA with proof of the name or number you used, and they can attempt to locate and transfer those wages to your current record. Bring old tax returns or W-2 forms as evidence.

Do credits count if I was paid in cash and did not report it?

No. Credits are based on wages reported to Social Security through tax returns or employer payroll records. Cash wages that were not reported do not create credits, even if you actually earned them. This is why it is important to report all income on your tax return, even if you are self-employed.

If I have a child, does that affect how many credits I need?

No. The number of credits you need for SSDI is based only on your age and work history, not on whether you have dependents. However, once you are approved for SSDI, your children may be able to receive benefits on your record — that is a separate matter from your own credit requirement.

Can my spouse's work credits count toward my SSDI?

No. SSDI is based on your own work record only. Your spouse's credits do not add to yours. However, if your spouse is retired, disabled, or deceased and has enough credits on their own record, you may be able to receive spousal or survivor benefits based on their work history.