Whether you owe taxes on SSDI depends on your other income

You may owe federal income tax on your Social Security Disability Insurance (SSDI) benefits, but only if your total income exceeds a certain threshold. The IRS calls this your "combined income," and it includes not just your SSDI but also wages, interest, dividends, and other money you receive. Most people receiving SSDI alone do not owe tax on it, but the moment you have other income—even a small amount—the calculation changes.

The threshold that triggers taxation is low. For a single person, if your combined income exceeds $25,000, you may owe tax on up to 50 percent of your benefits. If it exceeds $34,000, you may owe tax on up to 85 percent of your benefits. For married couples filing jointly, those thresholds are $32,000 and $44,000. These numbers have not changed since 1984, so they affect far more people now than they did when they were set.

The IRS does not automatically withhold tax from your SSDI payments the way an employer does from a paycheck. You are responsible for either paying estimated tax quarterly or requesting that the Social Security Administration (SSA) withhold a flat percentage from your monthly benefit. Many people do not realize this until tax time.

Key Takeaways

  • You owe federal income tax on SSDI only if your combined income (SSDI plus other earnings) exceeds $25,000 as a single filer or $32,000 as a married couple filing jointly.
  • If you have other income and your combined total crosses the threshold, between 50 and 85 percent of your SSDI may be taxable, depending on how far over you go.
  • The SSA can withhold a percentage of your monthly benefit for taxes if you request it, or you can pay estimated taxes on your own schedule.
  • State income tax on SSDI varies by state—some states do not tax SSDI at all, while others tax it the same way the federal government does.

How the IRS calculates combined income

Combined income is not the same as your adjusted gross income (AGI). The IRS adds your SSDI to your AGI, then adds back certain deductions that most people do not have. For most people receiving SSDI, combined income is straightforward SSDI plus any wages, self-employment income, interest, dividends, or rental income.

If you work part-time or have a side income, that counts when ready. If you are married and your spouse works, their income counts too, even if you file separately. If you receive a pension from a job where you did not pay Social Security tax—such as some government jobs—that pension is treated differently and can push more of your SSDI into the taxable range.

The calculation itself is complex, and the IRS provides a worksheet in Publication 915 to help you figure out how much of your benefit is taxable. Many people find it easier to use tax software or ask a tax preparer, since a small error can mean underpaying or overpaying.

Requesting tax withholding from the SSA

If you know you will owe tax on your SSDI, you can ask the SSA to withhold a percentage from your monthly payment. You do this by completing Form W-4V (Voluntary Withholding Request) and sending it to your local Social Security office or mailing it to the address on the form. You can request withholding of 7, 10, 15, or 22 percent of your benefit.

Withholding is voluntary, and you can change or stop it at any time. Many people choose a percentage that roughly covers what they expect to owe, so they do not face a large bill at tax time. If you are unsure what percentage to choose, a tax preparer can help you estimate based on your specific situation.

Keep in mind that withholding is not the same as paying your full tax bill. If you have other income beyond SSDI, withholding from your benefit alone may not cover all the tax you owe. You may still need to make estimated quarterly payments or pay the remainder when you file.

State income tax on SSDI

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

The remaining states tax SSDI in different ways. Some follow the federal rule exactly—taxing SSDI only if your combined income exceeds the federal threshold. Others tax SSDI more broadly or use different thresholds. A few states tax SSDI but then allow you to deduct it from your state taxable income, which reduces the tax you actually owe.

If you moved to a new state or are planning to, check your state's tax rules on SSDI. Your state tax authority's website usually has this information, or you can call their helpline. State tax rules change less often than federal rules, but it is worth confirming before you file.

What happens if you do not pay taxes owed on SSDI

If you owe tax on your SSDI and do not pay it, the IRS can assess penalties and interest on the unpaid amount. The penalty for underpayment is usually 0.5 percent per month of what you owe, plus interest that changes quarterly. Over time, this can add up to more than the original tax bill.

The IRS can also offset your future SSDI payments to collect what you owe, though this is less common than offsetting tax refunds. If you owe back taxes and cannot pay in full, you can contact the IRS to set up a payment plan. The IRS is often willing to work with people on fixed incomes, and a payment plan stops penalties from continuing to grow.

If you realize you underpaid in a previous year, you can file an amended return (Form 1040-X) to correct it. Filing an amended return voluntarily is better than waiting for the IRS to find the error, because it shows good faith and may reduce penalties.

Working while receiving SSDI and managing taxes

If you work and receive SSDI, your earnings affect both your taxes and your benefits. SSDI has a work incentive called the Trial Work Period, which lets you work and earn without losing benefits for nine months. After that, your benefits may be reduced or stopped if you earn above a certain amount—currently $1,550 per month in 2024, though this changes yearly.

For tax purposes, your wages count toward combined income when ready, even during the Trial Work Period. This means you could owe tax on your SSDI even while you are still receiving your full benefit amount. Plan for this by requesting withholding from both your paycheck and your SSDI, or by setting aside money for taxes.

The SSA has work incentives counselors who can help you understand how work affects your benefits. These counselors are free and can help you plan your work and taxes together. You can find one through your local SSA office or by calling 1-800-772-1213.

Frequently Asked Questions

Do I have to pay taxes on SSDI if I live on very little income?

Only if your combined income exceeds the threshold. If you receive SSDI and have no other income, you owe no federal tax on your benefit. If you have a small amount of other income—such as interest from a savings account—you may still be below the threshold and owe nothing. Use the IRS worksheet in Publication 915 or ask a tax preparer to be sure.

Can I get a refund if too much tax was withheld from my SSDI?

Yes. If you request withholding and the SSA withholds more than you actually owe, you will get the overage back when you file your tax return. This is the same as with any other withholding. Keep records of what was withheld so you can report it correctly on your return.

What if I receive both SSDI and SSA retirement benefits?

Both are treated the same way for tax purposes. Your combined income includes both benefits, and the same thresholds explore. If you receive both, add them together when calculating whether you owe tax.

Do I need to file a tax return if SSDI is my only income?

No. If SSDI is your only income and you are not required to file for other reasons, you do not have to file a federal return. However, if you have other income or if you had tax withheld from your SSDI, filing may let you claim a refund.

Where do I send Form W-4V to request tax withholding?

You can mail Form W-4V to your local Social Security office, or bring it in person. You can also request withholding by phone at 1-800-772-1213 or online through your my Social Security account. The form itself lists the mailing address for your region.