What determines your SSDI payment
Your Social Security Disability Insurance (SSDI) payment is based on your Primary Insurance Amount (PIA), which the Social Security Administration calculates from your lifetime earnings record. The SSA does not use a fixed dollar amount for everyone—your payment depends on how much you earned and paid into Social Security through payroll taxes before you became unable to work.
The calculation starts with your average indexed monthly earnings (AIME), which adjusts your past earnings for inflation. The SSA then applies a formula to that number to arrive at your PIA. This is the same formula used for retirement benefits, but you receive it earlier because you became disabled rather than reaching retirement age.
Your actual monthly payment may be higher or lower than the national average, which varies year to year. If you have dependents—a spouse or children under 19 (or 19 if still in high school)—they may receive their own payments based on your PIA, though there is a family maximum that caps total household benefits.
Key Takeaways
- Your SSDI payment is calculated from your earnings history, not a standard amount everyone receives.
- The Social Security Administration converts your past earnings into an average indexed monthly earnings figure, then applies a formula to determine your Primary Insurance Amount.
- You can view your own earnings record and a payment estimate by creating a my Social Security account on ssa.gov.
- Your payment amount does not change based on the severity of your disability—only your earnings history matters.
- Dependents may receive payments based on your PIA, but the total household benefit is capped at a family maximum.
How the SSA calculates your average indexed monthly earnings
The Social Security Administration looks back at your entire work history, usually the 35 years in which you earned the most. They take your actual earnings from each year and adjust them for inflation using a national wage index. This adjustment is called indexing, and it puts all your past earnings on a level playing field so that a dollar earned in 1990 is not compared directly to a dollar earned in 2020.
Once your earnings are indexed, the SSA adds up your highest 35 years of indexed earnings and divides by 420 (the number of months in 35 years). The result is your average indexed monthly earnings. If you worked fewer than 35 years, zeros are included in the calculation, which lowers your average.
You can see your actual earnings record by logging into your my Social Security account at ssa.gov. The record shows what the SSA has on file for each year you worked. If you spot an error—a missing year, an underreported amount, or earnings credited to the wrong year—you can request a correction, though you must do so within three years, three months, and 15 days of the year the earnings were posted.
The bend points formula that converts earnings to your payment
Once the SSA has your average indexed monthly earnings, they apply a formula using three bend points. Bend points are dollar amounts that change each year based on national wage growth. For 2024, the bend points are $1,174 and $7,078, though these numbers shift annually.
The formula works like this: you receive 90 percent of your AIME up to the first bend point, then 32 percent of the amount between the first and second bend point, then 15 percent of anything above the second bend point. This structure means lower earners get a higher percentage of their past earnings replaced, while higher earners get a smaller percentage.
Here is a concrete example: if your AIME is $3,000, the calculation would be (90% × $1,174) + (32% × $1,826, which is $3,000 minus $1,174) + (15% × $0, since you did not exceed the second bend point). That equals $1,056.60 + $584.32 + $0, or $1,640.92 as your Primary Insurance Amount.
The bend points change every January, so your PIA can increase slightly from year to year even if your earnings record does not change. The SSA publishes the current year's bend points on their website.
What happens if you have dependents
If you have a spouse or unmarried children under 19 (or 19 if in high school full-time), they can receive their own SSDI payments based on your PIA. A spouse typically receives up to 50 percent of your PIA, and each child typically receives up to 75 percent of your PIA. However, the total amount paid to your entire family cannot exceed a family maximum, which is usually 150 to 180 percent of your PIA.
This means if your PIA is $1,500 and your family maximum is 180 percent, the total household benefit would be capped at $2,700. If your spouse and two children would otherwise receive $1,800 combined, they would all receive less so the total stays within the cap. The SSA reduces each dependent's payment proportionally.
Dependents must meet their own requirements to receive benefits. A spouse must be at least 62 years old (or any age if caring for your child under 16), and children must be unmarried and under the age limit. If a dependent works and earns above a certain threshold, their payment may be reduced or suspended.
How work history gaps affect your calculation
If you did not work for several years—because you were unemployed, in school, raising children, or for any other reason—those years count as zeros in your 35-year calculation. The more years of zero earnings, the lower your average indexed monthly earnings and the lower your PIA.
The SSA does allow you to exclude certain years from the calculation in limited situations. If you were caring for a child under 16, you may be able to exclude those years. If you received a workers' compensation or public disability benefit, you may be able to exclude years during which you received that benefit. These exclusions are called dropout years, and they can raise your AIME by removing low or zero-earning years from the average.
You cannot request dropout years yourself—the SSA applies them automatically when they calculate your benefit. However, if you believe you may have access to for an exclusion and the SSA did not apply it, you can contact your local Social Security office to ask them to review your record.
Viewing your own payment estimate
The fastest way to see what your SSDI payment would be is to 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 benefit amount. This estimate is based on the earnings the SSA has on file as of your last login, so it updates as new earnings are added to your record.
The estimate assumes you become disabled at your current age and uses your earnings history up to the present. If you continue working, your estimate will change because the SSA will recalculate your AIME to include your new earnings. Conversely, if you have not worked recently, your estimate may be lower than it would have been if you had continued earning.
If you do not have a my Social Security account or prefer to speak with someone, you can call the Social Security Administration at 1-800-772-1213 (TTY 1-800-325-0778) to request a benefit estimate. You can also visit your local Social Security office in person, though wait times vary by location.
How cost-of-living adjustments change your payment each year
Your SSDI payment does not stay the same forever. Each January, the SSA applies a cost-of-living adjustment (COLA) to increase your benefit by a percentage tied to inflation. The COLA is the same percentage applied to all Social Security beneficiaries, and it is based on the Consumer Price Index for Urban Wage Earners and Clerical Workers (CPI-W).
In years when inflation is low or negative, the COLA may be zero or very small. In years with high inflation, the COLA can be 3 percent or higher. The SSA announces the COLA for the following year in October, and the increase takes effect in January. Your payment stub or my Social Security account will show the new amount.
COLA increases apply to your PIA, which means any dependents' payments also increase proportionally. However, if your family is subject to the family maximum, the COLA increase may be distributed differently among family members to keep the total within the cap.
Frequently Asked Questions
Can I see my SSDI payment calculation broken down?
The my Social Security account shows your earnings record and an estimate of your benefit, but it does not show the bend points formula applied to your specific numbers. To see the full calculation, you can request a detailed benefit statement by calling 1-800-772-1213 or visiting your local Social Security office. They can walk you through how your AIME and PIA were calculated.
What if I worked in another country before moving to the United States?
The SSA only counts earnings from U.S. employment covered by Social Security. If you worked abroad, those years typically count as zeros in your calculation unless you paid into the U.S. Social Security system while working there. Some countries have totalization agreements with the United States that allow certain foreign work to count, but this varies by country. Contact the SSA to ask whether your foreign work history affects your benefit.
Does my SSDI payment change if my disability gets worse?
No. Your SSDI payment is based solely on your earnings history, not on the severity of your disability or how your condition changes over time. The only way your payment increases is through annual COLA adjustments or if you return to work and earn additional credits that raise your average indexed monthly earnings (though this is rare for SSDI beneficiaries).
What happens to my payment if I go back to work?
If you return to work and earn above the substantial gainful activity (SGA) limit—which is $1,550 per month in 2024 for non-blind individuals—your SSDI benefits may be suspended. However, you have a nine-month trial work period during which you can earn any amount without losing benefits. After the trial work period, your benefits suspend if you continue earning above the SGA limit. If you stop working again, your benefits can restart without a new application.
Can I request a recalculation of my SSDI payment?
The SSA recalculates your benefit automatically each year to account for new earnings and COLA adjustments. If you believe there is an error in your earnings record or your PIA calculation, you can request a manual review by contacting your local Social Security office. Bring documentation of any earnings you believe are missing or incorrect, and the SSA will investigate.