Your SSDI payment is based on your own work history, not on how disabled you are

Social Security Disability Insurance (SSDI) pays you a monthly amount that depends almost entirely on how much you earned before you stopped working. The more you paid into Social Security through payroll taxes, the higher your monthly check. Your condition—whether you have a spinal cord injury, mental illness, or any other disability—does not change the amount. Two people with the same diagnosis can receive very different payments.

Social Security calculates your payment using your Primary Insurance Amount (PIA), which is based on your average earnings over your working years. They look at your 35 highest-earning years, adjust them for inflation, and run that average through a formula. The formula is weighted so that people who earned less get a slightly higher percentage of their past earnings, but the base calculation is always: what you paid in determines what you get out.

The actual dollar amount varies widely. In 2024, the average SSDI payment is around $1,550 per month, but individual payments range from a few hundred dollars to over $3,800 per month depending on work history. If you have little or no work history—for example, if you became disabled very young—your payment may be much lower or you may not may have access to for SSDI at all (though you might may have access to for Supplemental Security Income, or SSI, which is a different program with different rules).

Key Takeaways

  • Your SSDI payment amount comes from your own earnings record, not from the severity of your disability or your current financial need.
  • Social Security uses your 35 highest-earning years to calculate your payment, adjusted for inflation.
  • The average SSDI payment in 2024 is around $1,550 per month, but payments vary based on individual work history.
  • You can request a benefit estimate from Social Security before you explore, using your online account or by calling 1-800-772-1213.
  • If you have little work history, you may not may have access to for SSDI but might may have access to for SSI instead.

How Social Security calculates your specific amount

Social Security starts by looking at your earnings record—the official history of wages you reported to the IRS. They take your 35 highest-earning years and adjust each year's earnings for inflation using a national wage index. This prevents someone who worked in 1985 from being penalized just because wages were lower then.

Once they have your adjusted average, they divide by 420 (the number of months in 35 years) to get your Average Indexed Monthly Earnings, or AIME. Then they explore a formula called the bend points formula. This formula gives you a higher percentage of your first dollars earned and a lower percentage of your higher earnings. For example, in 2024, you might receive 90 percent of your first $1,174 in average monthly earnings, 32 percent of earnings between $1,174 and $7,078, and 15 percent of anything above that. These bend points change each year.

The result is your Primary Insurance Amount. This is the number Social Security uses to calculate your monthly SSDI payment. If you claim SSDI before your full retirement age, your payment is reduced by a small percentage for each month you claim early—but this reduction is different from the reduction that applies to regular retirement benefits.

What counts as your earnings record

Only wages you earned and reported to Social Security count toward your SSDI calculation. This includes W-2 wages from employers and net self-employment income if you were self-employed. Unemployment benefits, workers' compensation, disability payments from other sources, and money from family members do not count.

If you have years with no earnings or very low earnings, Social Security still counts them in your 35-year average—they just bring your average down. This is why people who took time out of the workforce to raise children, go to school, or care for family members often have lower SSDI payments than someone with 35 years of continuous full-time work.

Social Security does allow you to exclude up to five years of your lowest earnings (or zero-earnings years) if you became disabled before age 22. This rule helps young people whose work history is naturally shorter.

When your payment might be different from the average

If you have a spouse or children under 19 (or 19 if still in high school), they may be able to receive payments based on your earnings record. This does not reduce your payment—it is a separate benefit. A spouse at full retirement age can receive up to 50 percent of your PIA, and each child can receive up to 75 percent. However, there is a family maximum: the total amount paid to you and all your family members cannot exceed 150 to 180 percent of your PIA, depending on your situation.

If you are also receiving a pension from work that was not covered by Social Security—for example, a government job where you did not pay Social Security taxes—your SSDI payment may be reduced under the Government Pension Offset. This rule is complex and depends on when you were born and when you started receiving the pension.

Your payment also stays the same unless Social Security makes a cost-of-living adjustment (COLA) each year. In years when inflation is higher, your payment increases. In years with no inflation, your payment does not change.

How to find out what you would receive

You can see an estimate of your SSDI payment before you explore. Create a my Social Security account at ssa.gov. Once you log in, you can view your earnings record and see an estimate of your benefits at different ages. This estimate is based on your actual Social Security record, so it reflects your real work history.

If you do not have an online account, you can call Social Security at 1-800-772-1213 (TTY 1-800-325-0778) and ask for a benefit estimate. You can also visit your local Social Security office in person. Bring your Social Security number and a photo ID.

The estimate you receive is not a may provide of what you will be paid if you explore. Social Security will recalculate your benefit based on your complete work history at the time you are approved. If you worked more years or earned more money between now and when you explore, your payment could be higher.

SSDI versus SSI: why the payment amounts are different

SSDI and SSI are often confused because they are both run by Social Security and both serve people with disabilities. But they work very differently for payment amounts.

SSDI is based on your work history, so your payment depends on what you earned. SSI is based on financial need, so your payment depends on how little money and property you have. The maximum SSI payment in 2024 is $943 per month for an individual (the amount varies by state), while SSDI payments average $1,550 and can be much higher. However, SSI has no work history requirement—you can receive it even if you have never worked.

Some people receive both SSDI and SSI at the same time. This happens when your SSDI payment is very low (because your work history was short or your earnings were low) and you also have very little income or resources. Social Security will pay your SSDI first, then top you up with SSI to reach the SSI maximum for your state.

What happens to your payment if you work

If you return to work while receiving SSDI, your payment does not automatically stop. Instead, Social Security has rules about how much you can earn before your benefits are reduced or stopped. During a trial work period, you can earn any amount and keep your full SSDI payment for nine months (not necessarily consecutive). After the trial work period ends, Social Security uses a substantial gainful activity (SGA) threshold—in 2024, that is $1,550 per month—to decide whether to continue your benefits.

If you earn more than the SGA amount, your SSDI stops. But you have a grace period: you can have up to three months in a 36-month period where you earn above SGA without losing benefits. This is called the expedited reinstatement period, and it gives you time to see if work is sustainable for you.

Frequently Asked Questions

Can I find out my SSDI payment amount before I explore?

Yes. Create a my Social Security account at ssa.gov to see your earnings record and a benefit estimate. You can also call 1-800-772-1213 to request an estimate by phone. The estimate is based on your actual work history and gives you a realistic idea of what you might receive.

Why is my SSDI payment lower than my friend's if we both have the same disability?

SSDI payments are based on work history, not on your condition. If your friend earned more money over their working years or worked more years than you did, their payment will be higher. Two people with identical disabilities can have very different payments.

Does my SSDI payment increase every year?

Your payment increases only when Social Security announces a cost-of-living adjustment (COLA). This happens most years but not every year. The COLA is based on inflation and is the same percentage for everyone receiving SSDI. In years with no inflation, payments do not increase.

What if I never worked or barely worked before I became disabled?

You may not may have access to for SSDI if you do not have enough work history. However, you may may have access to for Supplemental Security Income (SSI) instead, which is based on financial need rather than work history. SSI has a lower maximum payment but no work history requirement.

If I get married, does my SSDI payment change?

Your own SSDI payment does not change if you marry. However, your spouse may become able to receive a payment based on your earnings record if they are at least 62 years old or caring for a child under 16. Your spouse's payment does not reduce yours.