Whether You Pay Taxes on SSDI Depends on Your Other Income

You may owe federal income tax on your Social Security Disability Insurance (SSDI) payments, but only if your total income crosses certain thresholds. The IRS calls this your "combined income," and it includes your SSDI plus half of your SSDI benefits plus any other income you receive—wages, interest, pensions, or other sources.

The threshold is low: $25,000 for a single filer, or $32,000 for married couples filing jointly. If your combined income stays below that line, you owe no federal tax on your SSDI. If it goes above, you may owe tax on up to 85 percent of your benefits, depending on how far above the threshold you go.

State income tax is separate. Some states tax SSDI; most do not. The states that do tax it usually follow the federal rule, but a few have their own thresholds. You can check your state's tax authority website or ask a tax preparer whether your state taxes SSDI.

Key Takeaways

  • You owe federal tax on SSDI only if your combined income (SSDI plus half your SSDI plus other income) exceeds $25,000 single or $32,000 married filing jointly.
  • If you do owe tax, the taxable portion is calculated by the IRS using a two-tier formula, and you may owe tax on up to 85 percent of your benefits.
  • Most states do not tax SSDI, but a handful do; check your state's tax rules or ask a tax preparer.
  • The IRS does not automatically withhold tax from SSDI payments, so you may need to pay estimated tax quarterly or request withholding from your benefit check.

How the IRS Calculates Taxable SSDI

The calculation has two steps, and the IRS publishes a worksheet in Publication 915 to walk you through it. Start by adding your SSDI for the year, half of your SSDI, and all your other income (wages, interest, pensions, rental income, anything else). That total is your combined income.

If your combined income is below $25,000 (single) or $32,000 (married filing jointly), you stop—no tax owed. If it is above that threshold, you move to the second tier. The IRS then calculates how much of your SSDI is taxable based on how far above the threshold you are. The formula is complex, but the result is that you may owe tax on 50 to 85 percent of your benefits.

Example: You are single and receive $1,500 per month in SSDI ($18,000 per year). You also earn $10,000 from part-time work. Your combined income is $18,000 + $9,000 (half your SSDI) + $10,000 = $37,000. You are $12,000 over the $25,000 threshold. Using the IRS formula, roughly $9,000 of your SSDI would be taxable. You would owe federal income tax on that $9,000 at your normal tax rate.

When the IRS Withholds Tax From Your SSDI Check

Social Security does not automatically withhold federal income tax from SSDI payments the way an employer does from a paycheck. If you expect to owe tax, you have two options: pay estimated tax quarterly, or request that Social Security withhold a flat amount from your monthly benefit.

To request withholding, fill out Form W-4V (Voluntary Withholding Request) and send it to your local Social Security office or mail it to the address on the form. You can choose to have 7, 10, 12, or 22 percent of your monthly benefit withheld. Social Security will then send that amount to the IRS each month on your behalf.

Requesting withholding does not change how much tax you actually owe—it just spreads the payment across the year instead of asking you to pay a lump sum when you file your return. If you withhold too much, you get a refund. If you withhold too little, you owe the difference when you file.

Other Income That Counts Toward the Threshold

The IRS includes almost any income in your combined income calculation. Wages from work count. Interest from a savings account counts. Distributions from a retirement account count. Rental income, capital gains, and self-employment income all count.

A few things do not count: Supplemental Security Income (SSI) is separate from SSDI and does not factor into the SSDI tax calculation. Veterans benefits also do not count. Certain railroad retirement benefits are treated differently. But if you receive income from work, investments, or pensions, it almost certainly counts toward your threshold.

This is why people on SSDI who also work sometimes end up owing tax even though their SSDI alone would not trigger a tax bill. The work income pushes their combined income over the threshold.

State Taxes on SSDI

Thirteen states currently tax SSDI: Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, Vermont, and West Virginia. (Illinois and Mississippi taxed SSDI in the past but have since stopped.) The rules vary by state.

Some states use the same federal thresholds ($25,000 single, $32,000 married). Others have higher thresholds or different rules altogether. A few states tax SSDI but exempt it for people over a certain age or with income below a certain level. Because the rules are specific to each state, you should check your state's tax authority website or ask a tax preparer in your state what applies to you.

What to Do If You Think You Owe Tax on SSDI

Start by calculating your combined income for the year. Add up your SSDI, half your SSDI, and all other income. If the total is above $25,000 (single) or $32,000 (married), you may owe tax. The IRS Publication 915 includes a worksheet to calculate exactly how much of your SSDI is taxable.

If you want help with the calculation, a tax preparer or CPA can do it for you. Many offer free or low-cost tax preparation if your income is below a certain level—look for VITA (Volunteer Income Tax information) sites in your area, which are free and run by the IRS.

Once you know whether you owe tax, decide how to pay it. You can request withholding on Form W-4V, pay estimated tax quarterly, or wait and pay the full amount when you file your return. If you expect to owe a large amount, withholding or quarterly payments spread the cost across the year and may help you avoid penalties for underpayment.

Frequently Asked Questions

Can I get a refund if Social Security withholds too much tax from my SSDI?

Yes. Withholding is just a way to pay your tax throughout the year. When you file your return, the IRS compares what you withheld to what you actually owe. If you withheld more, you get a refund. If you withheld less, you owe the difference.

Does working part-time while on SSDI make my benefits taxable?

Not automatically. But your work income counts toward your combined income, which may push you over the $25,000 or $32,000 threshold. Once you cross that threshold, some of your SSDI becomes taxable. The amount depends on how much you earn and your other income.

What if I receive both SSDI and SSI?

SSI (Supplemental Security Income) is a separate program and does not count toward the SSDI tax calculation. Only your SSDI, half your SSDI, and your other income matter for the federal tax threshold. However, SSI has its own income limits that may be affected by work or other income.

Do I have to file a tax return if I only receive SSDI?

If SSDI is your only income and it is below the filing threshold for your age and filing status, you do not have to file. But if you have other income or if some of your SSDI is taxable, you must file to report it. A tax preparer can tell you whether you are required to file based on your specific situation.

What happens if I do not pay the tax I owe on SSDI?

The IRS treats unpaid SSDI tax the same as any other unpaid tax. You may owe penalties and interest, and the IRS can take collection action. If you cannot pay in full, you can set up a payment plan with the IRS or request an offer in compromise. Contact the IRS directly or work with a tax professional to discuss your options.