A person who gets a $300 Social Security check and also qualifies for Supplemental Security Income is left with $714 in federal SSI under Social Security’s own 2026 example. The agency’s guide, Understanding Supplemental Security Income, 2026 Edition, subtracts $20 from the check and then takes the remaining $280 off the $994 federal rate. Total income for the month comes to $1,014, which is $20 more than the $994 rate alone.
The subtraction in two steps
SSA’s SSI income counting page lays out the same example, with a person who has no other income.
- $300 in Social Security, minus the $20 general exclusion, leaves $280 in countable income.
- $994, the 2026 federal benefit rate for an individual, minus $280 leaves $714.
The $20 is a general exclusion on most income received in a month, so it comes off first. After that, SSA treats Social Security as unearned income, a category that also includes pensions, state disability payments, unemployment benefits, interest, dividends and cash from friends or relatives. The page’s rule is that the more countable income a person has, the lower the SSI payment will be, and countable income above the limit means no payment at all.
For anyone drawing both benefits, the question is how much of each Social Security dollar comes out of the SSI check. Past the first $20, the answer in SSA’s example is all of it: dollar for dollar, with nothing set aside.
A $300 Social Security check removes $280 from the SSI rate before any other income is counted. The SSI & Disability Action Kit lists the 2026 SSI income and resource limits and the review and reporting steps.
Match a Social Security check to the 2026 SSI limits with the Disability Action Kit →
Why a benefit check costs more than a paycheck
Two people on the same $994 rate can end up with very different SSI payments depending on where their other money comes from.
The comparison with wages explains why. In a second SSA example, $317 in monthly wages leaves $116 countable, because the first $65 of earnings is excluded and half of the rest is not counted. A $317 paycheck therefore cuts SSI by $116 and a $300 Social Security check cuts it by $280. Benefit income gets only the $20 exclusion, while earnings get the $20, the $65 and the half-off rule.
The state supplement on top
Some states add their own payment. SSA’s guide shows a person living alone with the same $300 check and a $15 state supplement, whose $714 federal payment becomes $729 in total. SSA labels the $15 a sample figure. The guide says six states pay no supplement: Arizona, Arkansas, Mississippi, North Dakota, Tennessee and West Virginia.
When the Social Security check arrives late
The income page also covers a case where the two programs overlap in time. When a person is eligible for both Social Security and SSI for the same months, SSA reduces the retroactive Social Security benefit by the amount of SSI the person would not have received had the Social Security been paid on time. SSA calls this the windfall offset.
The same example at the 2027 rate
Social Security’s SSI payment table shows the federal rate rising to $1,029 for an individual in 2027, after a 3.6 percent increase, from $994 after 2.8 percent. With the same $300 check, countable income is still $280, so the federal payment would be $749 using SSA’s method. That figure is arithmetic with the new rate and not an example SSA publishes. SSA’s guide also lists the savings limits that sit beside the income rules: $2,000 in resources for an individual and $3,000 for a couple.
Working out what a Social Security check does to SSI
The free reference is SSA’s income counting page. It lists what counts, what does not, and the worked examples above, and it is the page to keep open next to the benefit letters.
Gather the latest Social Security award letter showing the monthly amount, the SSI notice showing the federal rate and any state supplement, and the last statement for every savings account. Then run the two steps: subtract $20 from all income that is not wages, subtract the result from the federal rate, and compare it with the payment that actually arrives. If the payment is lower than the math, something else is being counted, such as a pension, an interest payment or help from a relative, and that is worth sorting out before the next deposit.
$300 in Social Security removes $280 from the SSI rate
The cut is plain arithmetic when a Social Security check is the only other income, and harder to track once a pension, interest or a raise is added. The 74-page SSI & Disability Action Kit includes the 2026 SSI income and resource limits and the review and reporting steps, so every source of income is weighed against the same limits.
Get the 2026 SSI limits and reporting steps in the Disability Action Kit →
This article was produced with AI assistance and edited for accuracy against the sources linked above.
