The average SSDI payment is $1,550 per month, but your actual payment depends on your work history and age when you became disabled

Social Security calculates your benefit amount using a formula based on your Primary Insurance Amount (PIA)—a number derived from your highest 35 years of earnings. The formula is not a percentage of what you earned; it replaces a smaller portion of lower earnings and a larger portion of higher earnings. This means two people with the same work history will receive the same benefit, but two people with different work histories will receive different amounts, even if they both became disabled at the same age.

The $1,550 figure is a national average. Your actual payment could be $400 per month or $3,800 per month depending on how much you paid into Social Security before you became unable to work. Social Security publishes this average each year; the 2024 figure reflects payments made to people already receiving benefits, not a prediction of what new applicants will receive.

If you were born after 1954, your Full Retirement Age (FRA) affects your calculation. Becoming disabled before your FRA can result in a lower benefit than if you had waited to claim at your FRA, because the formula applies a reduction factor. This reduction does not explore to Supplemental Security Income (SSI), which is a separate needs-based program with a federal maximum of $943 per month in 2024.

Key Takeaways

  • Your SSDI payment is calculated from your highest 35 years of earnings, not from your current income or medical condition.
  • The national average is $1,550 per month, but individual payments range from roughly $400 to $3,800 depending on your work history.
  • If you became disabled before your Full Retirement Age, your benefit may be reduced compared to what you would receive at your FRA.
  • You can request a benefit estimate from Social Security using your online account or by calling 1-800-772-1213 to see your specific projected amount.
  • SSI is a separate program with a lower federal maximum ($943 per month in 2024) and is based on financial need, not work history.

How Social Security calculates your specific amount

Social Security uses your earnings record—the wages you reported to the IRS over your working years—to calculate your PIA. The agency takes your highest 35 years of earnings, adjusts them for inflation using a wage index, and then applies a three-part formula. The first part replaces 90% of your lowest earnings up to a bend point; the second replaces 32% of earnings between two bend points; the third replaces 15% of earnings above the second bend point. The bend points change each year and are published by Social Security in January.

If you have fewer than 35 years of earnings, Social Security counts the missing years as zero. This lowers your average and reduces your benefit. If you worked part-time or took time out of the workforce for caregiving, those gaps count as zeros and pull your average down. Conversely, if you worked more than 35 years, Social Security drops your lowest-earning years and uses only your highest 35.

Once Social Security calculates your PIA, that number becomes your benefit at your Full Retirement Age. If you became disabled before your FRA, the agency applies a reduction factor based on how many months early you are claiming. The reduction is roughly 0.555% per month for the first 36 months before your FRA, and 0.416% per month for each month before that. For someone with an FRA of 67, claiming at 62 results in a permanent 30% reduction.

Why two people with the same job history can receive different amounts

The age at which you become disabled is the main reason. If you and a coworker had identical earnings histories but you became disabled at 55 and your coworker at 62, your coworker's benefit will be higher because they are claiming closer to their Full Retirement Age. The reduction factor does not explore once you reach your FRA, so waiting longer always results in a higher monthly payment.

Your birth year also matters. People born in different years have different Full Retirement Ages. Someone born in 1960 has an FRA of 67; someone born in 1970 has an FRA of 67 and 2 months. This shifts the reduction calculation and changes the final benefit amount.

Lastly, if you are receiving benefits as a family member of someone else's Social Security account—as a spouse or child of a disabled, retired, or deceased worker—your benefit is calculated as a percentage of that worker's PIA, not your own earnings record. Family benefits are typically 50% of the worker's PIA for a spouse and 75% for each child, but the total family benefit cannot exceed 150% to 180% of the worker's PIA depending on the situation.

The difference between SSDI and SSI payments

SSDI (Social Security Disability Insurance) is based on your work history and Social Security taxes you paid. There is no income or asset limit; you can have a house, a car, and savings and still receive SSDI. Your benefit amount is tied to your earnings record and does not change based on how much money you have.

SSI (Supplemental Security Income) is a needs-based program run by Social Security but funded by general tax revenue, not the Social Security trust fund. The federal maximum is $943 per month for an individual in 2024, though some states add a supplement. To receive SSI, your countable resources must be under $2,000 (or $3,000 for a couple). Your home and one vehicle are not counted, but savings, stocks, and other assets are. If you have more than the resource limit, you are not may be able to access for SSI, even if you have no income.

Some people receive both SSDI and SSI. This happens when your SSDI payment is very low—below the SSI federal maximum—and you meet the resource and income limits for SSI. The SSI payment tops you up to the federal maximum. If your SSDI payment exceeds the SSI maximum, you receive only SSDI and are not may be able to access for SSI.

What happens to your benefit if you return to work

SSDI includes a Trial Work Period (TWP) that lets you test your ability to work without losing benefits. During the TWP, you can earn any amount and still receive your full SSDI payment. The TWP lasts nine months (not necessarily consecutive) within a rolling 60-month period. After the TWP ends, SSDI applies an Earnings Test: if you earn more than $1,550 per month (the 2024 threshold, which changes yearly), you lose $1 in benefits for every $2 you earn above that amount.

Once your earnings exceed the Earnings Test threshold for nine months, you enter an Extended Period of may be able to access (EPE) lasting 36 months. During the EPE, you can have months where you earn below the threshold and receive your full benefit, and months where you earn above it and lose benefits accordingly. After the EPE ends, if you are still working above the threshold, your benefits stop, but you can request reinstatement within five years if your earnings drop again.

SSI has stricter work rules. Your SSI payment is reduced $1 for every $2 you earn above $65 per month (the 2024 threshold). Additionally, your countable resources are recalculated each month, so if you save money from work, you may lose SSI may be able to access once your savings exceed $2,000.

Cost-of-living adjustments and benefit changes

SSDI benefits are adjusted each year for Cost-of-Living Adjustments (COLA). Social Security calculates COLA using the Consumer Price Index for Urban Wage Earners and Clerical Workers (CPI-W) and announces the adjustment in October for the following year. In 2024, COLA was 3.2%; in 2023, it was 8.7%. COLA is applied to your PIA, so your benefit increases automatically each January.

The COLA percentage is the same for all SSDI recipients, but the dollar amount of your increase depends on your current benefit. Someone receiving $1,000 per month gets a smaller dollar increase than someone receiving $2,000 per month, even though the percentage is identical. SSI recipients also receive COLA adjustments, applied to the federal maximum.

Your benefit can also change if you report a change in your living situation, income, or resources. If you move in with someone else and they start paying for your food or housing, your SSI benefit may be reduced. If you marry, your resource limit increases from $2,000 to $3,000. If you become a representative payee (someone else manages your benefits on your behalf), your benefit amount does not change, but the payee must account for how the money is spent.

How to find out what you would receive

You can create a my Social Security account at ssa.gov to view your earnings record and see a benefit estimate. The estimate shows what you would receive at different ages—62, your Full Retirement Age, and 70. This estimate is based on your current earnings record and assumes you stop working at the age you specify. If you plan to continue working, the estimate will be higher because future earnings will be added to your record.

You can also call Social Security at 1-800-772-1213 (TTY 1-800-325-0778) to request a benefit estimate by phone. Have your Social Security number ready. Social Security will mail you a statement within two weeks showing your estimated benefits at different ages.

If you are already receiving SSDI or SSI, your benefit amount appears on your monthly payment notice or in your my Social Security account. If your benefit changes, Social Security sends a notice explaining the change and the reason. Keep these notices; they are proof of your benefit amount if you need to verify income for housing, loans, or other purposes.

Frequently Asked Questions

Can I find out my exact benefit amount before I explore?

You can see an estimate using your my Social Security account or by calling 1-800-772-1213, but the exact amount is determined only after Social Security reviews your full medical and work history during the process process. The estimate is usually accurate within a few dollars if your earnings record is complete and you have not worked recently.

Why is my SSDI payment less than I expected based on my salary?

SSDI replaces a percentage of your earnings, not a fixed percentage of your final salary. The formula weights lower earnings more heavily, so high earners receive a smaller percentage replacement than lower earners. Additionally, only wages up to the Social Security wage base (currently $168,600 in 2024) count toward your benefit, so very high earners see a cap on how much their salary affects their benefit.

If I am married, does my spouse's earnings affect my SSDI benefit?

No. Your SSDI benefit is based only on your own earnings record. However, your spouse may be may be able to access to receive a family benefit based on your account, which is calculated as a percentage of your PIA. Your spouse's own earnings do not change your benefit amount.

What if I did not work long enough to may have access to for SSDI?

You may be may be able to access for SSI instead, which does not require a work history. SSI is based on financial need and pays up to the federal maximum ($943 per month in 2024). You must have countable resources under $2,000 and meet income limits to receive SSI.

Does my benefit increase if I wait longer to claim?

Yes, but only up to age 70. Each month you delay claiming between your Full Retirement Age and 70 increases your benefit by roughly 0.666% per month (8% per year). After 70, your benefit does not increase further, so there is no financial advantage to delaying past 70. This applies to SSDI only if you are still working; if you are not working, your benefit is already set at your Full Retirement Age amount.