What your SSDI payment will be

Your SSDI payment is based on your Primary Insurance Amount (PIA), which Social Security calculates from your lifetime earnings record. The Social Security Administration does not use a flat rate or a formula that depends on how disabled you are — instead, it looks at how much you paid into the system through payroll taxes over your working years.

The calculation starts with your highest 35 years of earnings (adjusted for inflation), averages those years, and then applies a formula that replaces a percentage of your past income. The percentage is higher for lower earners and lower for higher earners, which means SSDI replaces a larger share of income for people who earned less.

You cannot know your exact payment until Social Security completes your process and calculates your record, but you can get a rough estimate using your own earnings history or a Social Security calculator.

Key Takeaways

  • Your SSDI payment depends on your lifetime earnings record, not on the severity of your disability or your current financial need.
  • Social Security uses your highest 35 years of earnings (adjusted for inflation) to calculate your Primary Insurance Amount.
  • You can view your actual earnings record and get an estimate by creating a my Social Security account at ssa.gov.
  • The average SSDI payment varies by year and changes with cost-of-living adjustments, but you can ask Social Security for a personalized estimate during your process.
  • If you worked for a government employer that did not withhold Social Security taxes, your payment may be reduced by the Government Pension Offset.

How to find your earnings record

Your earnings record is the foundation of your SSDI calculation. You can view it for free by creating a my Social Security account at ssa.gov. You will need an email address, a Social Security number, and a way to verify your identity — usually a driver's license or state ID number.

Once you log in, select "Earnings Record" to see every year Social Security has on file for you. Check it carefully: if you see years with no earnings or earnings that seem too low, you may have a record that needs correction. If you spot an error, Social Security has a process to fix it, but you will need to act within a certain timeframe — usually three years, three months, and 15 days from the year the error occurred.

If you cannot create a my Social Security account online, you can call Social Security at 1-800-772-1213 (TTY 1-800-325-0778) and ask them to mail you a statement of your earnings record.

Using the Social Security benefit calculator

Social Security offers a free online tool called the Benefit Calculator on ssa.gov. It asks for your date of birth, current earnings, and expected future earnings, then shows you an estimate of what your SSDI payment might be. The calculator uses your actual earnings record if you have a my Social Security account, so the estimate will be more accurate than a rough guess.

The calculator gives you three scenarios: your benefit at your current age, at full retirement age, and at age 70. For SSDI purposes, you care about the first one — what you would receive if you became disabled today. The number it shows is an estimate only and will change if your earnings record changes or if Social Security corrects an error.

Keep in mind that the calculator assumes you will not earn any more money after today. If you have been working recently and expect to work more in the future, your actual benefit could be higher because Social Security will include those future earnings in the final calculation.

What happens to your payment if you keep working

If you are receiving SSDI and you work, Social Security will reduce or stop your payment if your earnings exceed the Substantial Gainful Activity (SGA) limit. This limit changes every year. In 2024, the SGA limit is $1,550 per month for non-blind individuals and $2,590 per month for blind individuals, but you should confirm the current year's limit on ssa.gov because it increases annually.

SSDI also includes a trial work period of nine months during which you can earn any amount without losing your benefit. After the trial work period ends, Social Security counts your earnings against the SGA limit. If you stay below the limit, you keep your full payment. If you go over it, your payment stops for that month.

This means your estimated benefit assumes you are not working. If you plan to work while receiving SSDI, your actual payment will depend on how much you earn each month.

The Government Pension Offset and your SSDI payment

If you worked for a federal, state, or local government employer and did not pay Social Security taxes on that job, you may be subject to the Government Pension Offset (GPO). This rule reduces your SSDI payment by two-thirds of the government pension you receive.

For example, if you receive a $900 monthly government pension and your SSDI payment would be $1,200, the GPO would reduce your SSDI by $600 (two-thirds of $900), leaving you with $600 per month in SSDI. In some cases, the GPO can reduce your payment to zero.

The GPO applies only if you worked for an employer that did not withhold Social Security taxes — typically certain government jobs hired before a specific date. If you are unsure whether your government job was covered by Social Security, ask Social Security directly or check your earnings record on your my Social Security account.

Cost-of-living adjustments and your payment

Every year, Social Security increases SSDI payments by a percentage called the Cost-of-Living Adjustment (COLA). This adjustment is based on inflation and is the same for all SSDI recipients that year. In recent years, COLA has ranged from 0% to over 8%, depending on inflation.

The COLA is announced in October and takes effect in January. Your payment will increase automatically — you do not need to do anything. If you are estimating your benefit, remember that the number you see today will likely be higher next year and the year after, assuming Congress does not change the COLA formula.

You can find the COLA history and the current year's adjustment on ssa.gov under "Cost-of-Living Adjustment Information."

What your estimate does and does not tell you

An estimate shows you what your payment might be based on your current earnings record and the current rules. It does not mean you will receive that amount — Social Security must first determine that you meet the medical definition of disability, and your actual payment depends on factors that may change between now and when you explore.

Your estimate can change if Social Security corrects an error in your earnings record, if you earn more money before you explore, if you receive a government pension, or if you are married and your spouse also receives Social Security benefits (which can affect family payments). An estimate is a starting point, not a may provide.

When you explore for SSDI, Social Security will give you a more precise estimate based on your complete process. That estimate is still not final — your actual payment is set only after your process is approved and your benefit begins.

Frequently Asked Questions

Can I see my SSDI payment amount before I explore?

You can see an estimate using the Benefit Calculator on ssa.gov or by calling Social Security at 1-800-772-1213. The estimate is based on your earnings record and current rules, but your actual payment will be determined after Social Security approves your process and calculates your final Primary Insurance Amount.

Does the amount of my disability affect how much I receive?

No. SSDI payments are based only on your earnings record, not on how severe your disability is or how much money you need. Two people with identical earnings histories will receive the same SSDI payment, even if one has a more severe disability than the other.

What if I did not work for very many years?

Social Security uses your highest 35 years of earnings. If you worked fewer than 35 years, the missing years count as zero, which lowers your average. You still may receive SSDI if you meet the medical definition of disability and have enough work credits, but your payment will be lower than someone with a longer work history.

Will my SSDI payment change after I start receiving it?

Your payment will increase each January by the Cost-of-Living Adjustment if Congress approves one that year. It may also change if you return to work and earn above the Substantial Gainful Activity limit, which would reduce or stop your payment temporarily. Otherwise, your payment stays the same until you reach full retirement age, when it converts to a retirement benefit.

How do I know if my earnings record is correct?

Log into your my Social Security account at ssa.gov and review your Earnings Record. Compare it to your tax returns or pay stubs from each year. If you see missing earnings or amounts that are too low, contact Social Security with proof of the correct amount — usually a tax return or W-2 form — and ask them to correct it.