Most people on SSDI do not owe federal income tax on their benefits, but some do

Whether you pay federal income tax on Social Security Disability Insurance (SSDI) depends on your total income for the year, not on the SSDI itself. The IRS uses a formula called combined income to decide if any of your benefits are taxable. Combined income adds your adjusted gross income, nontaxable interest, and half of your SSDI benefits together. If that total stays below a certain threshold, you owe nothing on your SSDI. If it goes above the threshold, a portion of your benefits becomes taxable.

The thresholds are the same for everyone and do not change year to year. For a single filer, the first threshold is $25,000. For married filing jointly, it is $32,000. If your combined income falls between the first threshold and a second one ($34,000 for single, $44,000 for married filing jointly), you may owe tax on up to 50 percent of your benefits. If your combined income exceeds the second threshold, you may owe tax on up to 85 percent of your benefits.

The key word is "may." The actual amount you owe depends on how far above the threshold you go. The IRS publishes a worksheet each year to calculate the exact figure, and a tax professional or tax software can walk you through it. Many people with SSDI and little other income never cross the first threshold and never file a return.

Key Takeaways

  • SSDI becomes taxable only if your combined income (wages, interest, and half your SSDI) exceeds $25,000 for single filers or $32,000 for married filing jointly.
  • Combined income includes earned wages, investment income, and nontaxable interest — not just SSDI itself.
  • If you do owe tax on SSDI, the IRS taxes only a portion of your benefits, not the full amount, using a formula that depends on how far above the threshold you go.
  • You can request that the Social Security Administration withhold federal income tax from your SSDI payments each month to avoid a large bill at tax time.

What counts as income for the combined income calculation

Combined income is wider than just your SSDI check. It includes wages from a job, self-employment income, pensions, and retirement account withdrawals. It also includes taxable interest and dividends, capital gains, and rental income. Nontaxable interest — such as interest from municipal bonds — counts too, even though you do not report it as income on your return.

SSDI itself does not count toward combined income in the first step. Instead, you add half of your annual SSDI to your other income. This is why someone with $20,000 in wages and $15,000 in SSDI might have a combined income of $27,500 ($20,000 + half of $15,000). That figure exceeds the $25,000 threshold for a single filer, so some of the SSDI becomes taxable.

Certain income does not count. Supplemental Security Income (SSI) is separate from SSDI and does not factor into this calculation. Veterans' benefits, workers' compensation, and some other government payments are also excluded. If you are unsure whether a specific payment counts, the Social Security Administration publishes a detailed list on its website, or you can call them at 1-800-772-1213.

How the IRS calculates the taxable portion

The IRS uses a two-tier system. In the first tier, if your combined income exceeds the first threshold but stays below the second, you may owe tax on up to 50 percent of your benefits. In the second tier, if your combined income exceeds the second threshold, you may owe tax on up to 85 percent of your benefits.

The actual amount is not automatic. The IRS calculates it using a worksheet that accounts for how much you are above each threshold. For example, a single filer with combined income of $27,500 is $2,500 above the first threshold of $25,000. The IRS would calculate 50 percent of that overage ($1,250) and compare it to 50 percent of your total SSDI benefits. Whichever is smaller is the amount potentially subject to tax. Then the IRS checks the second tier to see if more becomes taxable.

This is where tax software or a tax professional becomes useful. The worksheet has multiple steps and is straightforward to misread. If you file your own return, use the IRS Publication 915, which walks through the calculation with examples. If you use tax software, enter your SSDI amount and the software will run the calculation for you.

When you must file a tax return even if you owe no tax

You are not required to file a federal income tax return just because you receive SSDI. The IRS only requires you to file if your income meets a certain threshold. For 2024, a single person under age 65 must file if their gross income is $14,600 or more. If you are 65 or older, the threshold is $18,350. These thresholds change each year.

However, filing a return can be beneficial even if you do not owe tax. If you had taxes withheld from wages or other income, filing lets you claim a refund. If you are due the Earned Income Tax Credit (EITC) or other refundable credits, you must file to receive them. Many people with SSDI and part-time work find that filing returns them money.

If you are unsure whether you must file, the IRS provides an interactive tool on its website. You enter your filing status, age, and income, and it tells you whether filing is required. You can also call the IRS at 1-800-829-1040 or visit a free tax preparation site in your area.

Requesting federal income tax withholding from your SSDI

If you know your SSDI will be partly taxable and you want to avoid a large bill in April, you can ask Social Security to withhold federal income tax from your monthly payment. This works the same way withholding works on a paycheck — money comes out each month, and you get credit for it when you file your return.

To request withholding, complete Form W-4V (Voluntary Withholding Request) and mail it to your local Social Security office. You can read the form from the Social Security website or pick one up in person. On the form, you choose a withholding rate: 7 percent, 10 percent, 15 percent, or 25 percent of your monthly benefit.

The withholding starts the month after Social Security receives your form. You can change the rate or stop withholding at any time by submitting a new W-4V. Many people choose 10 percent as a middle ground, but the right rate depends on your total tax liability for the year. A tax professional can help you decide what rate makes sense for your situation.

State income tax on SSDI

Federal income tax and state income tax are separate. Some states do not tax SSDI at all, while others follow the federal rule and tax it the same way. A few states have their own thresholds or rules.

If you live in a state with an income tax, contact your state tax authority to learn its rules for SSDI. Many state tax agencies have websites with SSDI guidance, or you can call them directly. Some states exempt SSDI entirely, which means you owe nothing to the state even if the IRS taxes part of your benefit. Others tax SSDI only if your income exceeds a higher threshold than the federal one.

What to do if you receive a notice from the IRS

If the IRS sends you a notice about SSDI taxation, read it carefully to understand what it says. Common notices include a bill for unpaid tax, a request for more information, or a notice that your return was changed. Do not ignore it.

If you disagree with the notice or do not understand it, you have the right to respond. The notice will include a important date — usually 30 days — and instructions for how to reply. You can respond by mail, and you can include a written explanation of why you believe the IRS is wrong. If the amount is small and you straightforward want to pay, you can do that too.

If you need help understanding the notice or preparing a response, the IRS offers free information through its Taxpayer Advocate Service. You can also contact a tax professional or a legal aid organization in your area. Many offer free or low-cost help to people with limited income.

Frequently Asked Questions

Do I have to report my SSDI on my tax return?

You must report it if any portion is taxable based on your combined income. Even if none of it is taxable, you may still want to file to claim refundable credits or get back taxes that were withheld. The IRS Publication 915 explains when reporting is required.

What if I work part-time and receive SSDI?

Your wages count toward combined income, which may push you over the threshold and make some of your SSDI taxable. However, SSDI has its own work rules that may affect your payment amount — those are separate from the tax question. Contact Social Security about how your work affects your benefit, and contact the IRS or a tax professional about how it affects your taxes.

Can I reduce my combined income to avoid SSDI taxation?

Not easily. Combined income includes most types of earnings and investment income. You cannot straightforward avoid reporting income to stay below the threshold. However, certain income is excluded — such as SSI, veterans' benefits, and workers' compensation — so if you receive those, they do not count.

What if I owe tax on SSDI but cannot pay?

The IRS offers payment plans that let you pay over time. You can also request an installment agreement by mail or through the IRS website. If you cannot pay at all, contact the Taxpayer Advocate Service or a tax professional to discuss your options.

Does SSDI taxation affect my Medicare or Medicaid?

No. Owing federal income tax on SSDI does not change your Medicare coverage or Medicaid status. Those programs use different rules to determine may be able to access and do not look at whether your SSDI is taxable.