You may owe federal income tax on your SSDI benefits, but only if your total income exceeds a certain threshold

Whether you pay income tax on Social Security Disability Insurance (SSDI) depends on your combined income—not just your SSDI payments. The IRS counts SSDI as taxable income, but you only actually owe tax if your combined income crosses a specific line. That line is different for single filers and married filers, and it is lower than most people expect.

Combined income means your SSDI payments plus any other income you receive: wages from work, interest, dividends, rental income, or other Social Security benefits. The IRS uses a formula to calculate how much of your SSDI is taxable. If your combined income stays below the threshold, you owe nothing. If it goes above, you may owe tax on up to 85 percent of your SSDI benefits.

State income tax is separate. Some states do not tax SSDI at all. Others tax it the same way the federal government does. A few tax it only under certain conditions. You need to check your own state's rules—they do not follow the federal formula.

Key Takeaways

  • Federal income tax on SSDI is triggered only when your combined income (SSDI plus all other income) exceeds $25,000 for single filers or $32,000 for married couples filing jointly.
  • The IRS uses a two-tier formula: if you are over the threshold, you may owe tax on 50 percent of your benefits, or up to 85 percent if your income is very high.
  • State income tax rules for SSDI vary widely—some states exempt it entirely, while others follow the federal formula or have their own thresholds.
  • You do not have to file a federal tax return if your only income is SSDI and it falls below the filing threshold, but filing may let you claim refundable credits.

How the IRS calculates taxable SSDI

The IRS uses a two-step calculation called the combined income test. Combined income is your adjusted gross income (AGI) plus nontaxable interest plus half of your SSDI benefits. If that number is below $25,000 (single) or $32,000 (married filing jointly), you owe no tax on your SSDI.

If your combined income exceeds those thresholds, the IRS taxes either 50 percent or 85 percent of your SSDI, depending on how far over you are. The first tier applies if your combined income is between $25,000 and $34,000 (single) or $32,000 and $44,000 (married filing jointly). In that range, you may owe tax on up to 50 percent of your benefits. The second tier applies if your combined income exceeds $34,000 (single) or $44,000 (married filing jointly). In that range, you may owe tax on up to 85 percent of your benefits.

The actual calculation is complex—the IRS does not straightforward multiply your SSDI by a percentage. Instead, it uses a formula that depends on how much you are over the threshold. Many people use tax software or a tax professional to work through it. The Social Security Administration also publishes a worksheet you can use to estimate your tax liability.

What counts as income for this calculation

The IRS counts almost all income toward the combined income threshold. Wages from work count. Self-employment income counts. Interest and dividends count. Rental income, capital gains, and retirement distributions all count. If you receive other Social Security benefits—retirement, spousal, or survivor benefits—those count too.

Some income does not count. Supplemental Security Income (SSI) is not included in the combined income calculation. Veterans benefits are excluded. Certain municipal bond interest is excluded. Gifts and inheritances do not count. If you are unsure whether a specific income source counts, the IRS worksheet or a tax professional can clarify.

This is why someone with modest SSDI payments can end up owing tax: if they have a part-time job, a pension, or investment income, their combined income can easily exceed the threshold. A single person with $20,000 in SSDI and $10,000 in part-time wages has a combined income of $20,000 (the SSDI) plus $10,000 (wages) plus $10,000 (half of SSDI) = $40,000, which puts them well into the second tier.

State income tax rules vary widely

Thirteen states do not tax SSDI at all, regardless of your income: Alabama, Alaska, Florida, Georgia, Illinois, Kentucky, Louisiana, Mississippi, Missouri, Nevada, Ohio, Pennsylvania, and Tennessee. If you live in one of these states, you have no state income tax liability on your SSDI.

Most other states follow the federal formula—they tax SSDI only if your combined income exceeds the federal thresholds. However, some states use different thresholds or different percentages. A few states, including Colorado and Connecticut, have their own rules that may be more or less favorable than the federal calculation. You need to check your state's tax agency website or speak with a tax professional who knows your state's rules.

If you live in a state that taxes SSDI and you owe state income tax, you will file a state return in addition to your federal return. The state return uses similar income calculations but may have different rates and brackets.

Whether you have to file a tax return at all

You do not have to file a federal income tax return if your only income is SSDI and it falls below the filing threshold. For 2024, the filing threshold for a single person with only SSDI income is $14,600. For a married couple filing jointly with only SSDI income, it is $29,200. If your SSDI is your only income and you are below these amounts, the IRS does not require you to file.

However, filing may still benefit you. If you have little or no income tax withheld from your SSDI, you might be due a refund of taxes you paid on other income. You may also be able to claim the Earned Income Tax Credit (EITC) or the Additional Child Tax Credit if you have work income and dependents. These are refundable credits, meaning you can receive money back even if you owe no tax. To claim them, you must file a return.

If you are unsure whether you should file, the IRS Interactive Tax Assistant tool on irs.gov can walk you through the decision. Many tax preparation services offer free filing for people with low incomes.

How to report SSDI on your tax return

Social Security sends you a Form SSA-1099 each January showing your SSDI payments for the previous year. You use this form to report your benefits on your federal tax return. The form shows the total SSDI you received in box 5 and any federal income tax withheld in box 6.

On your federal return, you report your SSDI on Form 1040, the main individual income tax form. You enter your SSDI amount on the appropriate line, and the form or tax software walks you through the combined income calculation. If you use tax software, it usually does the calculation automatically once you enter your SSDI and other income.

If you are filing a state return, you will report your SSDI there as well, following your state's rules. Some states use the same Form 1040 information; others require you to enter it differently. Your state's tax agency website or a tax professional can clarify the specific steps for your state.

What to do if you owe tax on your SSDI

If you owe federal income tax on your SSDI, you can pay it when you file your return. You can also arrange to have the IRS withhold tax from your SSDI payments going forward, so you do not owe a large amount at tax time. To set up withholding, you file Form W-4V with the Social Security Administration. You can choose to have 7, 10, 12, or 22 percent of your monthly SSDI withheld.

If you do not withhold and you owe tax at the end of the year, you can pay the full amount with your return, or you can set up a payment plan with the IRS if you cannot pay in full. The IRS also allows you to request an extension to file your return if you need more time.

If you owe state income tax on your SSDI, you will pay that when you file your state return. Some states allow withholding from SSDI as well, though the process varies. Contact your state's tax agency to learn whether withholding is available and how to set it up.

Frequently Asked Questions

Can I reduce my SSDI tax by working less or earning less?

Yes. Since combined income triggers the tax, reducing other income sources can lower or eliminate your tax liability. If you have control over your work hours or investment income, you could adjust them to stay below the threshold. However, this strategy only works if you have income you can actually reduce. If your income comes from a pension or required distributions, you may have less flexibility.

What if I did not receive a Form SSA-1099?

Contact the Social Security Administration at 1-800-772-1213 or visit ssa.gov to request a replacement. You need the form to file your tax return accurately. If you cannot get the form in time, you can use your own records of SSDI payments, but having the official form is preferable because it matches what the IRS receives.

Do I owe tax on SSDI if I live outside the United States?

Yes, U.S. citizens and resident aliens owe federal income tax on SSDI regardless of where they live. If you live in another country, you may also owe tax to that country. You should file a U.S. federal return and may need to file a Foreign Bank Account Report (FBAR) or other forms depending on your situation. A tax professional familiar with expatriate taxes can guide you.

If I am married and file separately, what is my threshold?

If you are married and file separately, your combined income threshold is $0—meaning any combined income at all may result in some of your SSDI being taxable. This is why married couples almost always benefit from filing jointly if possible. Filing separately should only be considered in unusual circumstances, and you should consult a tax professional first.

Does the Medicare premium I pay reduce my taxable SSDI?

No. Medicare premiums are deducted from your SSDI payment, but they do not reduce the amount the IRS counts as income. The IRS counts your full SSDI payment before any deductions. This means your combined income for tax purposes is higher than the SSDI you actually receive in your bank account.