Calculate Amount of Social Security Disability Benefits
Use this premium SSDI calculator to estimate your monthly Social Security Disability Insurance benefit based on your Average Indexed Monthly Earnings, eligibility year, and any monthly offset. The calculator follows the official Primary Insurance Amount formula used by Social Security for SSDI estimates.
SSDI Benefit Calculator
Enter your estimated AIME and select the year you become eligible. The tool applies the correct bend points and rounds the result down to the nearest dime.
Expert Guide: How to Calculate the Amount of Social Security Disability Benefits
When people ask how to calculate the amount of Social Security disability benefits, they are usually trying to estimate an SSDI monthly payment. SSDI stands for Social Security Disability Insurance, a federal benefit administered by the Social Security Administration. It is designed for workers who have a qualifying disability and a sufficient work history under Social Security. The most important thing to understand is that SSDI is not based on how severe your financial need is. Instead, the amount is tied mainly to your past covered earnings.
The official monthly SSDI payment is generally built from your Average Indexed Monthly Earnings, often shortened to AIME. Social Security then applies a formula with two thresholds called bend points to determine your Primary Insurance Amount, or PIA. In practical terms, your PIA is the base benefit amount used for your SSDI estimate. The calculator above uses this same framework.
In simple terms: SSDI benefit estimates usually follow this formula: 90% of the first bend-point slice of AIME, plus 32% of the next slice, plus 15% of the remaining slice. The final amount is then rounded down to the nearest dime. If a workers’ compensation or public disability offset applies, the payable SSDI estimate may be lower.
What the SSDI calculator is doing
The calculator on this page asks for three key items: your AIME, your eligibility year, and any monthly offset that may reduce your benefit. This mirrors how many practical SSDI estimates are made outside a full SSA benefit computation. Here is what each input means:
- AIME: This is a monthly average based on your indexed earnings record. It is the starting point for the PIA formula.
- Eligibility year: Bend points change by year, so the formula thresholds must match the year you become eligible.
- Offset: Some beneficiaries have a workers’ compensation or public disability benefit offset that can reduce SSDI payments.
If you do not know your exact AIME, your estimate will only be as accurate as the earnings figure you enter. The best source is your Social Security statement or your online my Social Security account. The Social Security Administration explains disability eligibility and payment rules at ssa.gov/benefits/disability/.
The official SSDI formula in plain English
Social Security first identifies your AIME. Then it applies a progressive formula. Lower layers of earnings are replaced at a higher percentage than higher layers of earnings. This is why two people with different career earnings can receive very different SSDI benefits.
- Take the first layer of AIME up to the first bend point and multiply it by 90%.
- Take the amount of AIME between the first and second bend points and multiply it by 32%.
- Take the amount above the second bend point and multiply it by 15%.
- Add those pieces together.
- Round the result down to the nearest $0.10 to estimate the PIA.
- Subtract any applicable offset to estimate the payable SSDI amount.
This method is why SSDI estimates are not simple percentages of your former wages. The formula is weighted to replace more of lower average earnings and less of higher average earnings. The official bend-point framework is published by Social Security at ssa.gov/oact/cola/piaformula.html.
Bend points and key SSDI calculation statistics
The bend points change each year. That means your eligibility year matters. The table below shows real bend-point statistics commonly used in SSDI or retirement PIA calculations.
| Eligibility Year | First Bend Point | Second Bend Point | Maximum Taxable Earnings for the Year |
|---|---|---|---|
| 2023 | $1,115 | $6,721 | $160,200 |
| 2024 | $1,174 | $7,078 | $168,600 |
| 2025 | $1,226 | $7,391 | $176,100 |
These figures matter because they control how much of your AIME is replaced at 90%, 32%, and 15%. A person with a modest AIME may have most of their benefit calculated at the 90% and 32% rates. A person with a much higher AIME will have more of their earnings fall into the 15% layer, which lowers the replacement rate on that upper portion.
Example: calculating SSDI from an AIME of $3,500
Suppose your AIME is $3,500 and your eligibility year is 2024. The 2024 bend points are $1,174 and $7,078. Since $3,500 is above the first bend point but below the second bend point, the calculation works like this:
- First $1,174 at 90% = $1,056.60
- Remaining $2,326 at 32% = $744.32
- Nothing above the second bend point
- Total before rounding = $1,800.92
- Rounded down to nearest dime = $1,800.90
If no offset applies, your estimated monthly SSDI benefit would be approximately $1,800.90. Annualized, that would be roughly $21,610.80. This is the exact style of estimate the calculator above is built to produce.
Why your actual SSDI payment may differ
Even a careful estimate may not match your final award notice exactly. That does not mean the estimate is wrong. It usually means the official record includes details not captured by a simple online calculator. Common reasons for differences include:
- Earnings record corrections: If your SSA earnings history changes, your AIME can change.
- Eligibility timing: Different onset or entitlement dates can affect the formula year used.
- Workers’ compensation offset: This can reduce SSDI in some cases.
- Other public disability benefits: Some payments interact with SSDI.
- Medicare premiums: Medicare Part B premiums do not reduce the gross benefit itself, but they can reduce your net deposit if deducted.
- Cost-of-living adjustments: COLAs can raise payable benefits after entitlement.
Another important point is that SSDI and SSI are not the same program. SSI is means-tested and based on financial need. SSDI is insurance-based and tied to your earnings record. Many people search for “disability benefits” without realizing these are separate federal programs with different payment rules.
Work incentives and thresholds that can affect disability status
Although the formula above estimates the amount of your SSDI benefit, eligibility and continuing payment rules are also important. Social Security uses work activity thresholds, including the Substantial Gainful Activity standard, when evaluating some disability claims and continuing eligibility situations. The table below includes real SSA figures that often matter to disabled workers who are estimating future benefits and work-related impacts.
| Work-Related SSDI Statistic | 2024 Amount | 2025 Amount | Why It Matters |
|---|---|---|---|
| Substantial Gainful Activity, non-blind | $1,550 per month | $1,620 per month | Used in disability evaluation and work activity review contexts. |
| Substantial Gainful Activity, blind | $2,590 per month | $2,700 per month | Higher SGA level applies for statutorily blind individuals. |
| Trial Work Period service month amount | $1,110 per month | $1,160 per month | Used to determine trial work period service months for SSDI beneficiaries. |
These figures are published by Social Security and can be reviewed at ssa.gov/oact/cola/sga.html. They do not directly change the PIA formula, but they absolutely matter if you are planning to work while receiving benefits or want to understand how earnings may affect disability status.
How to estimate your AIME if you do not know it
Many users can estimate SSDI only after they approximate AIME. The best approach is to use your official Social Security earnings history. If you do not have your AIME available, use these steps:
- Log into your my Social Security account and review your annual earnings record.
- Confirm that your wages subject to Social Security taxes are accurate.
- Use SSA documents or a trusted estimate source to identify your indexed earnings.
- Determine the average monthly figure after the indexed computation, if available.
- Enter that AIME into the calculator above.
Without the official indexed earnings computation, any estimate based on current or average wages is only a rough approximation. The closer your AIME entry is to the real SSA figure, the more useful your estimate will be.
What counts as a good SSDI estimate?
A good estimate captures the key mechanics of the program: correct bend points, correct percentage layers, correct dime rounding, and any known offset. The calculator on this page follows that logic. For planning purposes, that is often enough to answer questions such as:
- What might my monthly SSDI payment look like?
- How much yearly income would SSDI provide?
- How much does a workers’ compensation offset change the result?
- How sensitive is my estimate to the year I become eligible?
For a final legal or administrative figure, however, your SSA award notice is the controlling document. If your case includes a complicated work history, mixed public benefits, foreign work, or potential family benefits, an individualized SSA review is the safer route.
Common mistakes when people try to calculate disability benefits
- Using gross annual salary instead of AIME. The formula is not applied directly to yearly salary.
- Ignoring bend points. SSDI is not a flat percentage of earnings.
- Using the wrong year. Bend points vary by eligibility year.
- Forgetting the dime-rounding rule. PIA is rounded down to the next lower dime.
- Confusing SSDI with SSI. They have different benefit structures.
- Missing offsets. Workers’ compensation or public disability benefits may reduce payable SSDI.
Bottom line
If you want to calculate the amount of Social Security disability benefits, the most important number is your Average Indexed Monthly Earnings. Once you have that figure, the SSDI estimate becomes much more straightforward: apply the correct bend points for your eligibility year, calculate the three replacement-rate layers, round down to the nearest dime, and subtract any known offset. That is exactly what this calculator is designed to do.
For further official guidance, review the Social Security Administration’s disability portal, PIA formula page, and annual work-threshold updates. Those primary sources are more reliable than generic summaries and can help you verify that the estimate you are using reflects current federal rules.