What a Work Credit Is and How Many You Need
A work credit is a record that you worked and paid Social Security taxes in a given quarter (three-month period). Social Security issues one credit per quarter, up to a maximum of four credits per year. To be found insured for SSDI, you must have earned enough credits by the time you become disabled — the exact number depends on your age when the disability began.
If you became disabled at age 31 or older, you typically need 40 credits total, with at least 20 of those earned in the 10 years before the disability started. If you became disabled between ages 24 and 30, the requirement is lower — usually 20 credits, with half earned in the years when ready before. If you became disabled before age 24, you may need as few as 6 credits earned in the three years before the disability began.
The reason for these different thresholds is that younger workers have had less time to build a work history. Social Security assumes that someone who has been working steadily for a few years has demonstrated enough attachment to the workforce to deserve protection if they become disabled.
Key Takeaways
- You earn one work credit per quarter (three-month period) when you earn and pay Social Security taxes, up to four credits per year.
- Most people need 40 total credits to be insured for SSDI, with at least 20 earned in the 10 years before disability began.
- Younger workers have lower credit requirements because they have had less time to work.
- Your Social Security Statement shows exactly how many credits you have earned in each year, and you can request an updated statement online.
How Much You Must Earn to Get One Credit
Social Security sets a dollar amount each year — the credit threshold — that you must earn in a quarter to receive one credit for that quarter. In 2024, you need to earn $1,730 in a quarter to receive one credit. This amount changes each year based on national average wage growth.
The key point is that you do not need to earn the threshold amount four times over the course of a year to get four credits. You can earn all four credits in a single quarter if you earn enough. For example, if you earned $6,920 in January alone, Social Security would credit you with four credits for that quarter, and you would have no credits remaining to earn for the rest of that year.
Self-employed workers and employees both count toward this threshold. If you are self-employed, you report your net earnings from self-employment on your tax return, and Social Security uses that figure to calculate credits. You must still pay self-employment tax for the credits to count.
How Social Security Tracks Your Credits Year by Year
Social Security maintains a record of your earnings history and the credits you earned in each quarter of each year. This record is tied to your Social Security number and is updated once per year, usually in the spring, when employers and the IRS report wage information to Social Security.
You can see your own record by creating an account on ssa.gov and viewing your Social Security Statement. The Statement shows your earnings for each year since you began working, the credits you earned in each year, and an estimate of your future benefits. If you do not have an online account, you can request a paper Statement by mail or visit a local Social Security office.
If you spot an error — for example, earnings that were not credited to your account or earnings credited to the wrong year — you can report it to Social Security. You have a limited window (usually three years, three months, and 15 days from the end of the year in which the earnings occurred) to correct the record, so it is worth checking your Statement regularly.
Credits Earned Before and After Disability Begins
The date your disability is determined to have begun matters because Social Security looks backward from that date to count your recent credits. This date is called your onset date. It is not necessarily the date you stopped working; it is the date a medical examiner or judge determines your condition became severe enough to prevent substantial work.
If you became disabled at age 35, for example, Social Security would count backward 10 years (to age 25) and require that you have earned at least 20 of your 40 total credits in that 10-year window. Credits earned before age 25 would count toward your total of 40, but they would not count toward the "recent work" requirement.
Credits you earn after your onset date do not count toward your SSDI insured status. Once you are found disabled, your work record is frozen at that point. If your disability is later found to have ended and you return to work, you can earn new credits going forward, but those new credits would not retroactively change your SSDI status during the period you were disabled.
How Quarters and Years Line Up
Social Security divides each calendar year into four quarters: January–March (Q1), April–June (Q2), July–September (Q3), and October–December (Q4). You can earn up to one credit per quarter, for a maximum of four per year. The quarter in which you earn the money is the quarter that receives the credit, regardless of when you actually receive the paycheck.
For example, if you earned $1,730 in February 2024, that credit is assigned to Q1 2024. If you earned $1,730 in December 2024, that credit is assigned to Q4 2024. This matters because Social Security looks at specific quarters when determining whether you meet the "recent work" requirement.
The table below shows how credits accumulate over a typical year of steady work:
| Quarter | Earnings Needed | Credits Earned | Total Credits for Year |
|---|---|---|---|
| Q1 (Jan–Mar) | $1,730 | 1 | 1 |
| Q2 (Apr–Jun) | $1,730 | 1 | 2 |
| Q3 (Jul–Sep) | $1,730 | 1 | 3 |
| Q4 (Oct–Dec) | $1,730 | 1 | 4 |
What Happens If You Do Not Have Enough Credits
If you do not have enough credits to be insured for SSDI, you cannot receive SSDI benefits based on your own work record. However, you may be able to receive benefits as a family member — for example, as a spouse or adult child of someone who is receiving or may have access to to Social Security retirement or disability benefits.
If you are close to having enough credits, you may be able to return to work part-time and earn additional credits before your condition worsens. Each quarter you work and earn the threshold amount adds one more credit to your record. If you are uncertain whether you have enough credits, you can contact Social Security directly or review your Statement online.
Another option is to wait. If you became disabled before age 24 and do not yet have the required credits, you may be able to meet the requirement by waiting a few more months or years, as long as you continue to work. However, this only works if your disability has not yet begun in Social Security's view — once an onset date is established, your work record is frozen.
Frequently Asked Questions
Can I earn more than four credits in a single year?
No. The maximum is four credits per year, one per quarter. Even if you earn $10,000 in a single month, you still receive only one credit for that quarter and cannot earn credits for future quarters in that year.
Do credits expire or disappear after a certain number of years?
No. Once you earn a credit, it stays on your record permanently. Credits earned 30 years ago count the same as credits earned last year. However, for the "recent work" requirement, only credits earned in the 10 years before your onset date count toward that specific requirement.
What if I worked for a government employer that did not pay Social Security taxes?
Some government employees, particularly those hired before certain dates, are covered by pension systems instead of Social Security. Those quarters do not generate credits. If you have a mix of covered and non-covered work, only the covered quarters count. You can ask Social Security which of your employers were covered.
If my disability onset date is changed, do my credits change?
No. Your credits themselves do not change. However, the "recent work" requirement is recalculated based on the new onset date. If your onset date moves forward, you may no longer meet the recent work requirement even though you have the same total number of credits.
Can I see a breakdown of my credits by quarter, not just by year?
Your online Social Security Statement shows credits by year only. If you need a quarter-by-quarter breakdown, you can request a detailed earnings record by contacting Social Security directly at 1-800-772-1213 or visiting a local office.