The amount you receive depends on your work history and age
Social Security Disability Insurance (SSDI) payments are based on your lifetime earnings record, not on how severe your condition is or how much you need. The Social Security Administration calculates your benefit using the same formula they use for retirement benefits — they look at your 35 highest-earning years and average them. If you worked fewer than 35 years, they count zeros for the missing years, which lowers your average.
The average SSDI payment in 2024 is around $1,550 per month, but this varies widely. Someone who worked in a low-wage job for 30 years will receive far less than someone who worked in a higher-paying field. A person approved at age 25 may receive a different amount than someone approved at 55, even if they earned the same total over their careers, because the calculation includes when you earned it.
You cannot call Social Security and ask them to increase your payment because your bills are high or your condition is expensive to manage. The payment amount is fixed once it is calculated. The only way it changes is if you return to work (which can trigger a trial work period), if you reach full retirement age (which converts your disability benefit to a retirement benefit at the same rate), or if you die and your family becomes may have access to to survivor benefits.
Key Takeaways
- Your SSDI payment is calculated from your work history, specifically your 35 highest-earning years, not from the severity of your disability or your current expenses.
- The average payment is around $1,550 per month, but individual amounts range from roughly $600 to over $3,800 depending on lifetime earnings.
- You can check your estimated benefit amount by creating a my Social Security account at ssa.gov and viewing your earnings record.
- Your payment stays the same each year unless you work, reach retirement age, or Social Security adjusts all payments for cost-of-living increases.
How Social Security calculates your payment amount
Social Security uses a three-step process. First, they identify your 35 highest-earning years (or fewer if you have not worked that long). Second, they divide the total by 420 months to get your Average Indexed Monthly Earnings (AIME). Third, they explore a formula called the Primary Insurance Amount (PIA) to convert that average into your monthly benefit.
The PIA formula has bend points — thresholds where the percentage changes. In 2024, the formula roughly replaces 90% of your first $1,174 in average monthly earnings, 32% of earnings between $1,174 and $7,078, and 15% of anything above that. This means lower earners get a higher percentage of their average replaced, while higher earners get a lower percentage. Someone who averaged $2,000 a month in earnings will not receive $2,000 in benefits; they will receive less because of how the bend points work.
If you worked outside the United States, Social Security may count those years if you paid into the system or if your country has a totalization agreement with the United States. You will need to provide documentation of foreign work history, which can take months to verify.
Checking what you might receive
The most accurate way to see your estimated benefit is to create a my Social Security account at ssa.gov. You will need an email address and a way to verify your identity — usually a phone number or address on file with Social Security. Once you log in, you can view your earnings record, which shows what Social Security has on file for each year you worked.
Review your earnings record carefully. If you see years missing or amounts that look wrong, contact Social Security to correct them. Errors in your record directly lower your benefit. You can request a correction by calling 1-800-772-1213 or visiting a local Social Security office. Bring tax returns or W-2s as proof of the correct amount.
The estimate in your my Social Security account assumes you continue working at your current pace until you reach full retirement age. If you plan to stop working soon or have already stopped, your actual benefit will be different — usually lower, because Social Security will count zero-earning years going forward.
What happens if you worked part-time or had gaps in work
Social Security counts zero-earning years in your 35-year average. If you worked only 20 years, the remaining 15 years count as zero, which significantly reduces your average and your benefit. This is why people who took time out for caregiving, education, or unemployment often receive lower SSDI payments than they expected.
There is no way to remove zero years from the calculation, but there is one exception: if you were born before 1951 and have at least 30 years of substantial earnings, you may be able to use a different calculation called the "30/40 rule." This counts only your 30 highest-earning years instead of 35, which can raise your benefit if you have significant gaps. Ask Social Security directly whether this rule applies to you — they do not always mention it.
If you worked part-time throughout your career, your benefit reflects that. There is no bonus for working longer hours or no penalty for working part-time. What matters is the total amount you earned in each year, not how many hours you worked.
Cost-of-living adjustments and how your payment changes
Once a year, usually in October, Social Security announces a cost-of-living adjustment (COLA). This is a percentage increase applied to all SSDI payments to account for inflation. In recent years, COLA has ranged from 0% (in 2011) to 8.7% (in 2023). The adjustment is automatic — you do not have to do anything to receive it.
Your payment also changes if you return to work. During a nine-month trial work period, you can earn any amount without losing benefits. After that, if your earnings exceed the substantial gainful activity (SGA) limit — which is $1,550 per month in 2024 — your benefits stop. If you stop working again, there is a five-month waiting period before benefits restart. This structure is designed to let you test whether you can work without when ready losing your safety net.
If you reach your full retirement age while receiving SSDI, your benefit amount does not change, but your benefit is reclassified as a retirement benefit. The payment stays the same, and you can work without any earnings limit. This conversion happens automatically.
Supplemental Security Income versus SSDI
Supplemental Security Income (SSI) is different from SSDI, though both are administered by Social Security. SSI is a needs-based program — the amount you receive depends on your income and assets, not your work history. If you did not work long enough to earn SSDI, you may still be found disabled and receive SSI instead.
SSI payments are lower than SSDI on average. The federal SSI payment in 2024 is $943 per month for an individual, though many states add a supplement. SSI also has strict asset limits — you cannot have more than $2,000 in countable resources. SSDI has no asset limit and no income limit once you are approved.
Some people receive both SSDI and SSI. This happens when your SSDI payment is very low — below the SSI federal rate — and you have limited income and assets. Social Security will pay your SSDI first, then top it up with SSI to reach the SSI payment level.
What to ask your local Social Security office
Before you contact Social Security, gather your documents: your Social Security card, birth certificate, and any tax returns or W-2s from years you think might be missing from your record. Call 1-800-772-1213 to schedule an appointment at your local office, or visit ssa.gov to find the office nearest you.
Ask these specific questions: "What does my earnings record show for the past five years?" "Are there any years missing?" "What is my estimated SSDI benefit if I were approved today?" "If I have worked outside the United States, how do I report that?" "Do I may have access to for the 30/40 rule?" Write down the answers and the name of the person you spoke with.
If you find errors in your earnings record, ask what documents Social Security needs to correct them and how long the correction takes. Do not assume your record is correct — errors are common, especially for self-employed workers or people who changed names.
Frequently Asked Questions
Can I increase my SSDI payment if I think it is too low?
No. Your payment is based on your work history and cannot be changed because you need more money or your expenses are high. The only way to increase it is to return to work and earn more, which would raise your future benefit calculation — but this takes years and requires you to be able to work, which may not be possible if you are disabled.
What if I worked in another country — does that count?
It may. Social Security has totalization agreements with about 30 countries. If you worked in one of those countries and paid into their system, those years can count toward your SSDI benefit. You will need to contact Social Security with proof of foreign employment and request a benefit calculation that includes those years.
Does my SSDI payment go up if my disability gets worse?
No. Once you are approved for SSDI, your payment amount is fixed based on your work history. How severe your condition is does not affect the payment amount. Your condition is reviewed periodically to confirm you still meet the disability criteria, but a worsening condition does not increase your monthly check.
How much can I earn while on SSDI before I lose my benefits?
You have a nine-month trial work period where you can earn any amount. After that, if you earn more than $1,550 per month (the 2024 SGA limit), your benefits stop. The limit changes each year. If you stop working, benefits restart after a five-month waiting period.
If I am married, does my spouse get part of my SSDI payment?
No. Your SSDI payment is yours alone. However, your spouse may be may have access to to their own benefit based on your work record if they are at least 62 years old, caring for a child under 16, or disabled. They would need to contact Social Security to determine whether they may have access to.