The Basic Formula: Income Minus Exclusions

SSI calculates your monthly payment by starting with a federal base amount, then subtracting the income you actually have. The federal base for 2024 is $943 per month for an individual and $1,415 for a couple, though your state may add money on top of that. The payment you receive is whatever remains after Social Security subtracts your countable income from that base.

Not all income counts. SSI has specific rules about what it ignores and what it counts toward your payment. Understanding these rules is the only way to know what your actual check will be, because two people with the same job might receive different amounts depending on other income sources.

Key Takeaways

  • SSI subtracts your countable income from a federal base amount ($943 individual, $1,415 couple in 2024) to calculate your payment.
  • The first $65 of monthly earned income is excluded, plus half of anything above that, which means working can increase your SSI payment up to a point.
  • Unearned income like Social Security, pensions, or child support counts dollar-for-dollar against your payment with no exclusion.
  • In-kind support — food or shelter someone gives you for free — reduces your payment by one-third of the federal base amount, a rule that catches many people off guard.
  • Your state may add supplemental payments on top of the federal amount, changing the total you receive each month.

How Earned Income Reduces Your Payment

If you work, SSI uses a specific formula to count your wages. The first $65 you earn in a month is completely ignored. Then SSI counts half of everything you earn above that $65. This means you can work and still receive some SSI payment, because your earnings do not reduce your check dollar-for-dollar.

For example: if you earn $200 in a month, SSI ignores the first $65, leaving $135. Half of $135 is $67.50, which is what counts as your income. If the federal base is $943, your SSI payment would be $943 minus $67.50, or $875.50. You keep both the $200 you earned and the $875.50 from SSI, for a total of $1,075.50 that month.

This formula changes if you are self-employed. Self-employment income is counted differently — SSI subtracts your actual business expenses first, then applies the same $65 exclusion and 50 percent rule to what remains. You will need to document those expenses with receipts or tax records.

Unearned Income and How It Works Differently

Unearned income — money you did not work for — counts against your SSI payment with no exclusions at all. This includes Social Security benefits, pensions, unemployment, child support, alimony, and regular gifts of money from family members. Every dollar of unearned income reduces your SSI payment by one dollar.

The timing matters. SSI counts income in the month you receive it. If you get a one-time gift in December, it counts only in December. If you receive ongoing support — like a family member giving you $100 every month — SSI counts $100 each month, and your payment drops by $100 each month.

Some unearned income has small exclusions. For instance, SSI ignores the first $20 of unearned income per month. So if you receive $50 in monthly child support, only $30 counts against your payment. But this $20 exclusion is much smaller than the $65 exclusion for work, and it applies only once per household.

In-Kind Support and the One-Third Reduction Rule

In-kind support means someone gives you food or shelter without charging you. If you live with family and they pay your share of the rent or utilities, or if someone regularly buys your groceries, SSI counts that as income. This rule surprises many people because no money changes hands.

When you receive in-kind support, SSI reduces your payment by one-third of the federal base amount. For 2024, that is one-third of $943, or about $314. This reduction applies whether someone is giving you $50 worth of groceries or $500 worth of rent — the penalty is the same.

There are narrow exceptions. If you live in someone else's household and they provide both food and shelter, the reduction is capped at one-third of the federal base. If you live alone and someone pays only your utilities (not food or shelter), that may not trigger the reduction at all. The specifics depend on your living arrangement, so it is worth asking your local SSI office how your situation is treated.

State Supplemental Payments and Regional Variation

Twenty-seven states and Washington D.C. add their own money to the federal SSI payment. These state supplements vary widely. Some states add $50 to $100 per month; others add several hundred. A few states have no supplement at all.

Your state supplement is calculated the same way as the federal payment — it starts with a state base amount and subtracts your countable income. Some states use the same income rules as SSI; others have different exclusions or thresholds. This means your total monthly payment depends partly on where you live.

If you move to a different state, your payment will change. Some states have higher bases and more generous supplements; others have lower ones. This is one reason to check with your new state's SSI office before you move, so you know what to expect.

How SSI Counts Resources and Why It Matters

SSI also has a resource limit — the total amount of money and property you can own and still receive a payment. For 2024, the limit is $2,000 for an individual and $3,000 for a couple. Resources include cash, bank accounts, stocks, bonds, and real property other than your home.

Your home and one vehicle do not count toward the resource limit. Personal items like furniture, clothing, and tools also do not count. But if you have more than $2,000 in countable resources, you become ineligible for SSI until you spend or give away the excess.

Resources are separate from income. You can have $0 income but still be ineligible if you have $3,000 in the bank. Conversely, you can have high income but still receive SSI if your resources are below the limit — though your income will reduce your payment to nearly zero.

How Your Payment Changes Month to Month

Your SSI payment is recalculated each month based on the income you report. If you earn more one month, your payment goes down that month. If you earn less, your payment goes up. This means your check amount can vary.

SSI requires you to report changes in income, living situation, and household composition. If you start a job, move in with someone, or receive a one-time payment, you must tell SSI within 10 days. Failure to report can result in an overpayment that you will be asked to repay later.

The federal base amount itself increases each year in January, based on cost-of-living adjustments. In 2024, the increase was 3.2 percent. This means your payment floor rises even if your income stays the same, though any increase in your income will offset some or all of that gain.

Frequently Asked Questions

Does my spouse's income count against my SSI payment?

Yes, if you are married and both receive SSI, your spouse's income is treated as your income for calculation purposes. If only one spouse receives SSI, the other spouse's income is deemed to you — meaning a portion of it counts against your payment. The deeming rules are complex and depend on whether you were already receiving SSI before marriage.

What happens if I receive a tax refund or inheritance?

A tax refund or inheritance is unearned income and counts in the month you receive it. If you get a large lump sum, it will reduce or eliminate your SSI payment that month. If the amount is large enough to push you over the $2,000 resource limit, you may become ineligible until you spend it down.

Can I work and still receive SSI?

Yes. The $65 exclusion and 50 percent rule mean you can earn money and keep some SSI. However, as your earnings increase, your SSI payment decreases. At some income level, your SSI payment reaches zero, though you may still be may be able to access for Medicaid even when your cash payment stops.

How does student income count?

Student earned income has a higher exclusion than regular work income. SSI excludes the first $8,230 of student earned income per year (2024), up to a maximum of $1,410 per month. This applies only to students under age 22 who are in school full-time. Other income rules apply after that threshold.

What if someone gives me money as a gift?

Gifts are unearned income and count in the month received. If you receive regular gifts from family, each gift counts toward your $20 monthly unearned income exclusion. Gifts beyond that reduce your SSI payment dollar-for-dollar. One-time gifts count only in the month you receive them.