The short answer: most people with SSDI don't pay federal income tax on their checks, but some do

Whether you owe federal income tax on your Social Security Disability Insurance (SSDI) payments depends on your total income for the year. If SSDI is your only income, you almost certainly won't owe tax. If you have other income—from work, pensions, investments, or a spouse's earnings—some of your SSDI may become taxable. The IRS uses a formula based on your "combined income" to decide how much, if any, of your disability check counts as taxable income.

The taxable portion is never more than 85 percent of your SSDI benefit, even if your other income is very high. Many people in this situation still owe no tax at all because the threshold for owing tax is higher than the standard deduction.

Key Takeaways

  • If SSDI is your only income and you're under age 65, you won't owe federal income tax unless your income exceeds $14,600 in 2024 (the standard deduction for single filers).
  • Combined income is calculated by adding your adjusted gross income, tax-exempt interest, and half of your SSDI benefit—this number determines whether any of your disability check is taxable.
  • If your combined income is between $25,000 and $34,000 (single) or $32,000 and $44,000 (married filing jointly), you may owe tax on up to 50 percent of your SSDI.
  • If your combined income exceeds $34,000 (single) or $44,000 (married filing jointly), up to 85 percent of your SSDI may be taxable.
  • You can request that the Social Security Administration withhold federal income tax from your SSDI checks to avoid owing a large amount at tax time.

How the IRS decides if your SSDI is taxable

The IRS does not tax SSDI the same way it taxes wages or pensions. Instead, it uses a two-tier system based on your combined income. Combined income is not the same as your total income—it's a specific calculation that includes:

  • Your adjusted gross income (AGI) from all sources except SSDI
  • Tax-exempt interest (such as interest from municipal bonds)
  • Half of your SSDI benefit for the year

Once you know your combined income, the IRS applies two thresholds. If your combined income stays below the first threshold, none of your SSDI is taxable. If it crosses the first threshold, up to 50 percent of your benefit becomes taxable. If it crosses the second threshold, up to 85 percent becomes taxable.

The thresholds are $25,000 for single filers and $32,000 for married couples filing jointly. The second tier begins at $34,000 for single filers and $44,000 for married couples filing jointly. These thresholds have not changed since 1984.

When you'll actually owe tax on your disability check

Even if some of your SSDI becomes taxable under the IRS formula, you may still owe no federal income tax. This is because the amount of income you can earn before owing tax—called the standard deduction—is higher than the threshold at which SSDI becomes taxable.

For 2024, the standard deduction for a single person under age 65 is $14,600. This means if you're single, have only SSDI as income, and your combined income is below $25,000, you won't owe federal income tax even though technically some of your benefit is "taxable" under the formula.

You will owe tax if your combined income is high enough that your taxable SSDI, plus any other taxable income, exceeds the standard deduction. This most often happens when you have income from work, a pension, or investment earnings in addition to SSDI.

Example: You're single and receive $1,500 per month in SSDI ($18,000 per year). You also earn $12,000 from part-time work. Your combined income is $12,000 + $9,000 (half your SSDI) = $21,000. This is above the first threshold of $25,000, so up to 50 percent of your SSDI becomes taxable. However, your total taxable income is still below the standard deduction of $14,600, so you owe no federal income tax.

State income tax on disability checks

Federal income tax and state income tax are separate. Even if you don't owe federal tax on your SSDI, you may owe state tax depending on where you live.

Some states do not tax SSDI at all, regardless of your income. Other states follow the federal formula and tax SSDI the same way the IRS does. A few states have their own rules that differ from federal law. You can find your state's rules by contacting your state tax authority or checking your state's tax website.

If you live in a state that taxes SSDI and you expect to owe state tax, you can request that Social Security withhold state income tax from your checks in addition to federal withholding.

How to request tax withholding from your SSDI checks

If you expect to owe federal or state income tax on your SSDI, you can ask Social Security to withhold money from your monthly check. This works the same way withholding works on a paycheck—money is set aside each month and sent to the IRS or your state, so you don't face a large bill at tax time.

To request withholding, you need to complete Form W-4V (Voluntary Withholding Request). You can get this form from Social Security's website, by calling Social Security at 1-800-772-1213, or by visiting your local Social Security office in person.

On the form, you choose a withholding rate: 7 percent, 10 percent, 15 percent, or 20 percent of your benefit. You can change or stop withholding at any time by submitting a new form. If you want to withhold a specific dollar amount instead of a percentage, you can request that as well, though it requires contacting Social Security directly.

Withholding is voluntary—Social Security will not withhold tax unless you ask. If you don't request withholding and you owe tax at the end of the year, you'll need to pay the full amount when you file your return.

What to report on your tax return

When you file your federal income tax return, you'll report your SSDI on Form 1040 (the main individual income tax form). Social Security sends you a Form SSA-1099 each January showing the total SSDI you received the previous year. Use this form to fill out your tax return.

The IRS worksheet for determining taxable SSDI is included in the instructions for Form 1040. If you use tax software or work with a tax preparer, they can calculate the taxable portion for you using the information from your SSA-1099 and your other income sources.

If you had tax withheld from your SSDI checks, that withholding is credited toward your tax bill just like withholding from a paycheck. If you withheld more than you owe, you'll receive a refund. If you withheld less than you owe, you'll owe the difference.

Frequently Asked Questions

Can I avoid paying tax on my SSDI by keeping my other income low?

Not directly—the IRS formula includes half of your SSDI in combined income, so even if you have no other income, your combined income will be at least half your SSDI. However, if your only income is SSDI and it's below $25,000 per year, none of it is taxable. If you have other income, you can't reduce your SSDI tax by earning less, but you can estimate your tax and request withholding to avoid a surprise bill.

Does my spouse's income count toward my SSDI tax if we file jointly?

Yes. If you're married and file a joint return, the IRS combines both spouses' income to calculate whether your SSDI is taxable. This can push you into a higher tax bracket even if your own income is low. The thresholds for married couples filing jointly are higher ($32,000 and $44,000) to account for this.

What if I owe back taxes on SSDI from previous years?

Contact the IRS directly at 1-800-829-1040 or visit irs.gov to set up a payment plan. You can also amend previous tax returns if you didn't report SSDI income correctly. The IRS has procedures for payment plans and offers in compromise if you can't pay the full amount at once.

Does Supplemental Security Income (SSI) get taxed the same way as SSDI?

No. SSI is never taxable as federal income, regardless of how much other income you have. However, SSI is a needs-based program, so other income can affect whether you remain may be able to access for SSI payments. SSDI and SSI are separate programs with different tax rules.

If I'm working and receiving SSDI, how does that affect my taxes?

Your work income is always taxable. Your SSDI becomes taxable only if your combined income (work income plus half your SSDI plus any other income) exceeds the thresholds. Many people who work and receive SSDI end up owing tax on both their wages and a portion of their SSDI, so requesting withholding from both sources is common.