Whether you owe taxes on SSDI depends on your total income, not just the disability payment itself

Social Security Disability Insurance (SSDI) payments may or may not be taxable. The answer hinges on your combined income—which includes wages, interest, dividends, and half of your SSDI benefit—not on the disability payment alone. If your combined income stays below a certain threshold, you owe no federal tax on SSDI. If it exceeds that threshold, a portion of your benefit becomes taxable.

The IRS calls this the "combined income test." It is the same test used for regular Social Security retirement benefits. The thresholds are low, and they have not changed since 1984, which means more people with SSDI now fall into the taxable range than when the rule began.

Key Takeaways

  • Your SSDI is taxable only if your combined income (wages plus half your SSDI benefit plus other income) exceeds $25,000 for a single filer or $32,000 for a married couple filing jointly.
  • Combined income is calculated by adding your adjusted gross income, nontaxable interest, and half of your SSDI benefit—not the full benefit amount.
  • If you are taxable, only a portion of your SSDI becomes subject to tax, never the full amount.
  • You do not have to file a tax return unless your income is high enough to require one, but filing can sometimes result in a refund even if you owe no tax.

How the IRS calculates whether your SSDI is taxable

The IRS uses a two-step process. First, they calculate your combined income by adding three things: your adjusted gross income (wages, self-employment income, and certain other earnings), any nontaxable interest you received, and half of your SSDI benefit for the year.

Second, they compare that combined income to a threshold. For a single filer, the threshold is $25,000. For a married couple filing jointly, it is $32,000. For a married person filing separately, it is $0—meaning any SSDI is potentially taxable.

If your combined income is below the threshold, your SSDI is not taxable. If it exceeds the threshold, the IRS taxes up to 85 percent of the excess, though in practice the amount taxed is usually lower. You will never pay tax on more than 85 percent of your total SSDI benefit.

Examples of how combined income works in practice

Suppose you are single, receive $1,200 per month in SSDI ($14,400 per year), and have no other income. Your combined income is $14,400 (your SSDI) plus $0 (no other income) plus half of $14,400 ($7,200) = $21,600. This is below $25,000, so your SSDI is not taxable.

Now suppose you work part-time and earn $15,000 per year. Your combined income is now $15,000 (wages) + $0 (no other income) + $7,200 (half your SSDI) = $22,200. Still below $25,000, so your SSDI remains nontaxable.

If you earn $20,000 per year instead, your combined income is $20,000 + $0 + $7,200 = $27,200. This exceeds $25,000 by $2,200. The IRS then applies a formula to determine how much of your SSDI is taxable—in this case, roughly $1,100 to $1,650 of your annual SSDI benefit would be subject to tax, depending on your exact situation.

State taxes on SSDI

Thirteen states tax Social Security benefits under their own rules, which differ from federal rules. Those states are Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, Vermont, and West Virginia.

Some of these states use the same federal thresholds; others use different ones. A few exclude SSDI entirely while taxing regular Social Security retirement benefits. You will need to check your state's tax rules separately, as they do not follow the federal formula. Your state tax agency website or a tax professional familiar with your state can tell you whether your SSDI is taxable under state law.

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

You are not required to file a federal tax return unless your income meets the IRS filing threshold for your age and filing status. For 2024, a single person under 65 with less than $14,600 in gross income does not have to file. The threshold is higher if you are 65 or older, and different if you are married or self-employed.

However, filing a return can be worthwhile even if you do not owe tax. If you had taxes withheld from wages or made estimated tax payments, filing allows you to claim a refund. If you are low-income, you may also be able to claim the Earned Income Tax Credit (EITC) or other refundable credits that result in a payment to you.

How to report SSDI on your tax return

SSDI benefits are reported on Form 1040, the main federal income tax return. You will receive a Form SSA-1099 from Social Security by January 31 each year showing the total SSDI you received in the prior year. Use this form to fill out your return.

If you use tax software, the program will ask whether you received Social Security benefits and guide you through the combined income calculation. If you file by hand or work with a tax preparer, provide them with your Form SSA-1099 and any other income documents (W-2s, 1099s for interest or dividends, and so on). The tax preparer or software will calculate whether any of your SSDI is taxable.

What happens if you do not file when you owe tax

If your combined income exceeds the threshold and you owe tax but do not file, the IRS may eventually contact you. Penalties and interest accrue on unpaid tax. However, if the amount owed is very small, the IRS may not pursue it aggressively.

If you cannot pay the tax you owe, you can contact the IRS to set up a payment plan. The IRS also offers hardship relief in some cases. It is better to file a return and work out a payment arrangement than to ignore the debt, as penalties grow over time.

Frequently Asked Questions

Does working part-time affect whether my SSDI is taxable?

Yes. Wages from work are counted as part of your combined income. Even modest earnings can push you over the $25,000 threshold if your SSDI is already substantial. However, you can still work and receive SSDI—the work straightforward affects your tax situation, not your benefit may be able to access.

If I receive both SSDI and SSI, are both taxable?

No. Supplemental Security Income (SSI) is never taxable. Only SSDI is subject to the combined income test. If you receive both programs, only the SSDI portion is considered when determining whether you owe tax.

Can I reduce my taxable SSDI by making charitable donations?

Charitable donations do not reduce the combined income calculation used to determine whether SSDI is taxable. However, if you itemize deductions on your tax return, charitable donations can reduce your overall taxable income, which may lower your total tax bill.

What if my SSDI changes during the year?

Your Form SSA-1099 will show the total SSDI you received for the entire year. Use that amount to calculate your combined income. If your benefit changed mid-year, Social Security will still report the annual total on the form.

Do I need to pay estimated taxes if my SSDI might be taxable?

Only if you have other income (like wages or self-employment income) that is not subject to withholding. If you work and earn wages, your employer withholds tax, which usually covers any SSDI tax owed. If you are self-employed or have investment income, you may need to make quarterly estimated payments.