How Are SSDI Payments Calculated? (Updated for 2026)

Key takeaways

• The maximum SSDI benefit in 2026 is $4,152/month (up from $4,018 in 2025).

• The average SSDI payment is about $1,630/month, which is a more realistic benchmark for most applicants.

• Your exact payment amount is based on your work history, specifically how much you earned and paid into Social Security over time.

The Social Security Administration calculates your benefit using a formula based on your AIME (average indexed monthly earnings) and PIA (primary insurance amount). How much is Social Security Disability? In 2026, the maximum amount you can earn from Social Security Disability Insurance (SSDI) is $4,152 per month (up from $4,018 in 2025). That’s a nice sum, but most people won’t get that much. The average SSDI benefit is only about $1,630.

Calculating how much you’ll earn in Social Security disability benefits means figuring out your primary insurance amount (PIA), which depends on how much you’ve paid into Social Security from previous paycheck withholdings. So how much can you expect? Let’s walk through the calculation.

How to check your SSDI payment amount

You might be wondering, "What is my Social Security disability benefit amount per month?" Before we get into any numbers, there’s an easy way to see exactly how much you’ll get from SSDI — no calculator required.

Create a free mySocialSecurity account, and the SSA will tell you precisely how much you can expect to get from SSDI each month. (If you plan to apply for SSDI, you’ll need to make an account anyway.)

Setting up your account is kind of a pain — the process takes about 15 minutes, and you'll need to verify your identity by entering your personal information and by using facial recognition that requires a camera. But it’s completely free, and your information is secure. Just make sure you’re only giving your Social Security number to trusted websites, like SSA.gov. 

With an SSA account, you’ll also be able to see your income history, how many work credits you have, and your retirement benefits status. If there are any errors in your record, you can also correct them to potentially increase your SSDI benefit. Check out our benefits calculator estimate here to find your monthly benefit amount:

Social Security disability benefits pay chart

Social Security Disability Insurance (SSDI) provides higher monthly payments than Supplemental Security Income (SSI). Here are the average disability payment per month monthly and maximum payment amounts for 2026:

Check out the payment schedule to see when you will receive benefits payments each month.

How is SSDI calculated?

It all starts with the Social Security Administration (SSA) calculating your average indexed monthly earnings (AIME). Your AIME is based on how much you’ve earned and how much Social Security tax you’ve paid while you were working. Your AIME allows the SSA to determine your primary insurance amount, or PIA. Your benefits amount is based on your PIA.

Calculate your AIME

To start calculating your average indexed monthly earnings, the SSA first indexes your wages. This means they adjust them to reflect how much average wages have grown since you earned them.

The SSA looks at up to 35 years of your wages. But $100 earned 20 years ago was a much bigger piece of a typical paycheck than it is today because average wages have risen. Indexing your earnings updates your past wages to today's pay levels. This makes sure you don't get a smaller benefit check just because wages were lower when you worked.

Next, the SSA will average your indexed earnings for up to 35 years of your work history. The good news is that the SSA chooses your highest-earning years. So if you worked and paid into Social Security for 40 years, they’ll choose the 35 years during which your earnings were highest to calculate your AIME.

Once they come up with your AIME, they calculate your primary insurance amount (PIA).

Calculate your PIA

Your primary insurance amount is determined by breaking your AIME into three separate slices. In 2026, the first slice covers your first $1,286 of earnings. The second covers earnings between $1,286 and $7,749. The third slice accounts for earnings above $7,749. (The dollar cut-offs for those slices generally increase annually.)

The PIA formula says that your 2026 monthly SSDI benefit is worth:

• 90% of the first slice (your first $1,286 of AIME) PLUS

• 32% of the second slice (any AIME between $1,286 and $7,749) PLUS

• 15% of the third slice (any AIME over $7,749)

The SSA rounds down to the next-lowest $0.10 multiple. So if your PIA calculation comes out to $1,358.32, your benefit check would be rounded down to $1,358.30.

Example SSDI calculation

The math gets a little complicated, so let’s look at an example. Let’s say the SSA calculated your average indexed monthly earnings at $5,000. Breaking that into slices, you can see that your SSDI check will be worth:

• 90% of the first $1,286, or $1056.60 PLUS

• 32% of $3,714 (your $5,000 AIME – the $1,286 in the first slice), or $1,188.48

• The 15% slice isn’t applicable because your AIME wasn’t more than $7,749

That would bring your monthly check from SSDI to $2,345.88 ($1056.60 from the first slice + $1,188.48 from the second).

How much is Social Security disability per month?

How much is SSDI per month? The SSA is a federal organization, so the calculations above apply no matter where you live in the country. That said, because average salaries and hourly wages vary based on location, knowing what people are getting in your home state can help you get a feel for what to expect.

Average SSDI payment vs. maximum SSDI payment

According to the SSA's most recent Annual Statistical Report, the average monthly SSDI check was $1,760.34. You can find the average for your home state below.

For a complete breakdown of how much SSDI and SSI are worth in your area, read our state-by-state guide to disability benefits.

How to increase your SSDI payment

Unfortunately, the only way to increase your SSDI payment is to increase your AIME, which means working at least a year with a higher income to figure into your average earnings. If you’re thinking about applying for disability, that’s might not be realistic for you.

You can take steps to make sure you’re getting as much as possible, though. In your mySocialSecurity account, go over your earnings history. If you notice any years that are missing or underreported, correcting the error with the SSA will increase your AIME and SSDI payment.

Types of income that lower your SSDI payment

Most people don’t need to worry about this, but there are a few types of income that could decrease your SSDI check.

• Workers’ compensation: It's possible to qualify for SSDI on workers’ comp. In total, your SSDI and workers’ compensation payments can’t equal more than 80% of your income from your last job. So if you do qualify for both, the SSA could temporarily offset your SSDI payments based on your workers’ compensation amount.

• State disability benefits: Only California, Hawaii, New Jersey, New York, and Rhode Island offer short-term disability programs. You can still receive SSDI, but while you're receiving state payments, your SSDI payment will be reduced.

• Other government pensions: If you pay into a state pension instead of Social Security, for example, it can reduce what you’re eligible for when it comes to SSDI.

Will my SSDI payments ever change?

Yes. In fact, they’ll most likely regularly increase each year. The SSA modifies SSDI payments annually based on a cost-of-living adjustment (COLA). The 2026 COLA means a 2.8% bump to people’s checks.

You don’t need to do anything to see that increase. Your check will increase automatically after the COLA takes effect each year. The annual increase also doesn’t affect your usual SSDI payment schedule.

How is SSDI back pay calculated?

The SSDI application is a lengthy process, and you are paid for the time spent waiting for a decision on your claim. That back pay is worth the monthly amount you are awarded adjusted to the cost of living during the year you waited. The only difference is that you receive one lump sum for all the months you spend awaiting a decision (minus five months, which the SSA considers an acceptable processing time).

Can you get SSDI and SSI at the same time?

Yes, in certain cases. However, the amount of your SSDI payment reduces the SSI payment you’re eligible to receive. In most cases, someone who qualifies for SSDI will get a big enough payment that they’re ineligible for SSI.

Learn more about who can get SSI and SSDI at the same time.

How to apply for SSDI and win benefits

While SSDI offers a nice monthly payment, getting approved isn’t an easy or quick process. Be prepared to navigate the multi-step application process. Most applicants must go through a couple of rounds of appeals, and some individuals may need to apply multiple times.

The good news is that you don’t have to go it alone. Professional help from a disability lawyer increases your chances of winning by three times. To quickly find out if you’re eligible for SSDI and to get connected to legal support (if you want it), take our free 2-minute disability quiz.

The bottom line

The maximum SSDI benefit per month in 2026 is $4,152, while the average monthly payment is $1,630. Your actual payment amount depends on how much you earned and paid into Social Security during your past work history.

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