Most people on SSDI pay no federal income tax on their benefits

Whether you owe taxes on your SSDI depends on your combined income—not just what Social Security sends you. If SSDI is your only income, you almost certainly owe nothing. But if you have other income (wages, interest, pensions, or rental income), you may have to count part of your SSDI as taxable.

The IRS uses a formula called the "combined income test" to decide this. Combined income means your adjusted gross income plus nontaxable interest plus half of your Social Security benefits. If that number stays below a certain threshold, you pay no tax on SSDI. If it goes above, up to 50% or 85% of your benefits become taxable, depending on how far above the threshold you are.

The thresholds are the same for everyone and do not change year to year. For 2024, the first threshold is $25,000 for single filers and $32,000 for married couples filing jointly. These numbers have been the same since 1984.

Key Takeaways

  • If SSDI is your only income, you owe no federal tax on it, even if you receive the full benefit amount.
  • Combined income—not SSDI alone—determines whether any of your benefits are taxable; combined income includes half your SSDI plus all other income sources.
  • The income thresholds that trigger taxation are $25,000 for single filers and $32,000 for married couples filing jointly, and these have not changed since 1984.
  • You may owe taxes on SSDI if you have wages, a pension, investment income, or other earnings in the same year you receive benefits.
  • Some states tax SSDI even when the federal government does not, so check your state's rules separately.

How the combined income test works

The combined income formula is the same for everyone, but it can feel backward at first. You start with your adjusted gross income (the number on your tax return before deductions). Then you add back any nontaxable interest you earned—interest from municipal bonds, for example. Then you add half of the total Social Security benefits you received that year, whether from SSDI or retirement benefits.

That sum is your combined income. If it is below $25,000 (or $32,000 if married filing jointly), you stop here—none of your SSDI is taxable. If it is above that threshold, the IRS taxes either 50% or 85% of your benefits, depending on how far above the threshold you are.

The math gets more complex in the second tier, but the point is straightforward: the higher your other income, the more of your SSDI becomes taxable. Someone with $30,000 in combined income will have some SSDI taxed. Someone with $60,000 in combined income will have more taxed. Someone with $100,000 in combined income will have the most—up to 85% of benefits.

When you have wages or a pension alongside SSDI

If you work while receiving SSDI, your wages count toward combined income. So do pensions, 401(k) withdrawals, IRA distributions, rental income, and capital gains. Each of these pushes your combined income higher and can trigger taxation on your benefits.

This matters most for people who return to part-time work or who receive a pension from a previous job. A person earning $20,000 in wages plus $18,000 in SSDI has a combined income of roughly $27,000 (half of $18,000 is $9,000, plus $20,000 in wages). That crosses the $25,000 threshold, so some SSDI becomes taxable even though neither income source alone seems large.

If you are considering work while on SSDI, the tax impact is worth calculating before you start. The Social Security Administration has a work incentives program that can help protect your benefits, but taxes are a separate question from benefit reduction.

State taxes on SSDI

Thirteen states tax Social Security benefits, and SSDI counts as Social Security for this purpose. Those states are Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, Vermont, and West Virginia. (Illinois taxes benefits only for people over 61.)

Each state uses its own rules, which often differ from the federal formula. Some states follow the federal combined income test. Others tax SSDI only if your income exceeds a different threshold. A few states exempt SSDI entirely even though they tax retirement benefits.

If you live in one of these states, contact your state tax authority or a tax preparer familiar with your state's rules. The federal government does not tax your SSDI, but your state may, and the two calculations do not always line up.

What to do if you think you owe taxes on SSDI

Start by gathering your Social Security statement for the year in question. The Social Security Administration mails a form called the SSA-1099 to anyone whose benefits are taxable. This form shows the total benefits you received. You will need this number to fill out your tax return.

Then calculate your combined income using the formula above. If it is below the threshold for your filing status, you owe no federal tax on SSDI. If it is above, you may owe tax, and you should file a return even if you normally would not have to.

If you are unsure whether you owe taxes, a tax preparer or the IRS can help. The IRS has a free tax preparation program called VITA (Volunteer Income Tax information) for people with low to moderate income. You can find a VITA site near you at irs.gov.

Paying taxes you owe on SSDI

If you owe taxes on your SSDI, you have the same options as anyone else: pay when you file your return, set up a payment plan with the IRS, or request an installment agreement. You can also have the Social Security Administration withhold taxes from your benefit check each month, which works like payroll withholding.

To set up withholding, you fill out form SSA-521 and send it to your local Social Security office. You choose how much to withhold—10%, 15%, 20%, or 25% of your monthly benefit. This reduces your monthly check but can help you avoid a large tax bill at the end of the year.

Many people on SSDI choose withholding because their benefits are their only income and they want to avoid a surprise bill. Others prefer to keep the full benefit and pay taxes when they file. Either approach is legal; it depends on your situation and preference.

Frequently Asked Questions

If I have no other income, do I ever owe taxes on SSDI?

No. If SSDI is your only income source, your combined income is below the threshold, and you owe no federal tax on your benefits. You may still want to file a return to claim the Earned Income Tax Credit or other refundable credits, but you do not owe tax on the SSDI itself.

Does working part-time while on SSDI mean I have to pay taxes?

Not automatically. It depends on how much you earn. If your wages plus half your SSDI stay below $25,000 (or $32,000 if married), you owe no tax. But if they go above that threshold, some SSDI becomes taxable. A tax preparer can calculate this for you before you start work.

Can I avoid taxes on SSDI by not reporting other income?

No. The IRS knows about your wages, pensions, and investment income from other sources (employers, banks, and investment firms report it). Failing to report income is tax fraud. If you owe taxes on SSDI, the safest and legal path is to file a return and pay what you owe.

What if I live in a state that taxes SSDI but the federal government does not?

You may owe state tax even if you owe no federal tax. Each state sets its own rules. Check with your state tax authority or a tax preparer in your state to understand your obligation. Some states offer credits or exemptions that can reduce or eliminate the tax.

If I have taxes withheld from my SSDI, do I still have to file a return?

You should file a return if you had any tax withheld, because you may be due a refund. Withholding is not the same as paying the exact amount owed. Filing ensures you get back any overpayment and claim any credits you are may have access to to.