Your SSDI payment amount depends on your work history and earnings record, not on how severe your disability is

The Social Security Administration calculates your SSDI payment based on how much you earned during your working years — specifically, your average earnings over your highest-earning 35 years. The more you earned and paid into Social Security through payroll taxes, the higher your monthly payment. Two people with the same disability can receive very different amounts because their work histories are different.

Your payment is not based on need, family size, or the cost of living where you live. It is based entirely on your own past earnings. The Social Security Administration calls this your Primary Insurance Amount (PIA), and it is calculated using a formula that applies to everyone.

The average SSDI payment in 2024 is around $1,550 per month, but this is just an average. Some people receive less than $800 per month; others receive more than $3,800. Your actual amount depends on when you became disabled and what you earned before that happened.

Key Takeaways

  • Your SSDI payment comes from your own Social Security earnings record, not from a needs-based program, so it does not change based on your income or assets.
  • The Social Security Administration uses your highest 35 years of earnings to calculate your payment, and you must have worked long enough to have enough credits on your record.
  • You can request a benefit estimate from Social Security before you file, which shows what you would receive based on your current earnings record.
  • If you worked for a government employer that did not pay into Social Security, your SSDI payment may be reduced by a formula called the Government Pension Offset.

How Social Security calculates your payment amount

Social Security uses a three-step process to turn your earnings record into a monthly payment. First, they adjust your past earnings for inflation using a wage index — this makes sure that earnings from 20 years ago are counted fairly against recent earnings. Second, they take your highest 35 years of indexed earnings and calculate your average monthly earnings. Third, they explore a benefit formula that converts that average into your Primary Insurance Amount.

The benefit formula is progressive, meaning it replaces a higher percentage of earnings for people who earned less. Someone who earned $20,000 per year will see a larger percentage of that income replaced by SSDI than someone who earned $100,000 per year. This is by design — the program aims to prevent poverty for lower-wage workers.

You do not need to have worked for 35 years to receive SSDI. If you have fewer than 35 years of earnings, Social Security counts the missing years as zeros, which lowers your average. But you do need to have earned enough credits — typically 40 credits total, with at least 20 earned in the 10 years before you became disabled. One credit equals roughly $1,550 in earnings in 2024 (this amount changes each year).

What affects your payment amount

Your age when you became disabled affects your payment. If you became disabled before age 22, Social Security uses a different calculation that may result in a lower payment because you have fewer years of work history. If you became disabled at 50 or later, your payment is typically based on your full earnings record up to that point.

Work you did outside the United States may or may not count toward your SSDI payment, depending on whether you paid into Social Security and whether you have a totalization agreement with that country. Work for certain government employers — federal, state, or local — may not have been covered by Social Security, which means those years do not count toward your benefit amount.

If you have already been receiving Social Security retirement benefits before you became disabled, your SSDI payment is usually the same as your retirement benefit. You do not receive both payments; you receive whichever is higher. If you are receiving a pension from work that was not covered by Social Security, the Government Pension Offset may reduce your SSDI payment by up to two-thirds of that pension amount.

How to find out what you would receive

You can create a my Social Security account at ssa.gov and view your earnings record and benefit estimate without filing for SSDI. This estimate shows what you would receive based on your current earnings record and assumes you became disabled today. The estimate updates each year after Social Security posts your new earnings.

The estimate you see online is not a may provide — it is based on the information Social Security has on file. If there are errors in your earnings record, your actual payment could be different. You should review your record every few years to catch mistakes early. If you find an error, you can request a correction by contacting Social Security directly.

If you do not have a my Social Security 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 card and a photo ID.

Payment amounts for family members

If you are receiving SSDI, your spouse and children may also receive payments based on your earnings record. These are called family benefits, and they do not reduce your payment. Your spouse can receive up to 50 percent of your Primary Insurance Amount, and each of your children can receive up to 50 percent as well.

However, there is a family maximum — the total amount paid to you and all family members combined cannot exceed 150 to 180 percent of your Primary Insurance Amount. If the family maximum is reached, each family member's payment is reduced proportionally. A spouse caring for a child under age 16 can receive benefits regardless of age; otherwise, a spouse must be at least 62 years old.

Children can receive benefits until age 19 if they are in high school full-time, or until age 18 if they are not in school. Adult children who became disabled before age 22 can continue receiving benefits for life, as long as they remain disabled.

Cost-of-living adjustments and payment changes

Your SSDI payment increases each year if there is a Cost-of-Living Adjustment (COLA). Social Security calculates COLA based on the Consumer Price Index for Urban Wage Earners and Clerical Workers. If inflation rises, your payment rises by the same percentage. If there is no inflation, there is no COLA that year.

Your payment can also change if you return to work and earn above the Substantial Gainful Activity (SGA) level. In 2024, the SGA level is $1,550 per month for non-blind individuals and $2,590 for blind individuals. If you earn more than this amount, Social Security may determine that you are no longer disabled and stop your benefits. However, there are work incentives that allow you to test your ability to work without when ready losing benefits.

Your payment does not change based on other income you receive — retirement accounts, investments, rental income, or help from family members do not affect your SSDI amount. SSDI is not a means-tested program, so your assets and other income do not matter.

Frequently Asked Questions

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

Yes. Create a my Social Security account at ssa.gov to view your earnings record and see an estimate of what you would receive. You can also call 1-800-772-1213 and ask for a benefit estimate. The estimate assumes you became disabled today and is based on your current earnings record.

Why is my SSDI payment lower than I expected?

Your payment is based on your average earnings over your highest 35 years of work. If you had years with no earnings or low earnings, those years are included in the average and lower your payment. If you became disabled before age 22, you have fewer years of work history, which also lowers the amount.

Does my SSDI payment change if I move to a different state?

No. SSDI payments are the same in every state because they are based on your earnings record, not on where you live. Your cost of living may be different, but your payment amount does not change.

What happens to my SSDI payment if I go back to work?

If you earn more than the Substantial Gainful Activity level ($1,550 per month in 2024), Social Security may determine you are no longer disabled and stop your benefits. However, work incentive programs allow you to test your ability to work for a trial period without losing benefits when ready. Contact Social Security to learn about these options before you start working.

Can my SSDI payment be reduced because of other benefits I receive?

SSDI itself is not reduced by other income or benefits. However, if you are also receiving a pension from government work not covered by Social Security, the Government Pension Offset may reduce your SSDI payment. If you are receiving both SSDI and Supplemental Security Income (SSI), the two programs coordinate, and your total payment may be affected.