Whether your SSDI is taxable depends on your other income

Social Security Disability Insurance (SSDI) itself is not automatically taxable. But if you have other income — wages, pensions, interest, or investment gains — you may owe federal income tax on part of your SSDI benefits. The IRS uses a formula based on your "combined income," which includes half of your SSDI plus all your other income sources.

The tax applies only if your combined income exceeds a certain threshold. For single filers, that threshold is $25,000. For married couples filing jointly, it is $32,000. If you fall below these amounts, your SSDI is not taxable, even if you have other income. If you exceed them, up to 50 percent of your benefits may be subject to federal income tax — and in some cases, up to 85 percent.

State income tax is a separate question. Some states do not tax SSDI at all. Others tax it the same way the federal government does. A few states have their own rules. You will need to check your state's tax authority website or speak with a tax professional about your specific situation.

Key Takeaways

  • SSDI becomes taxable only if your combined income (half your SSDI plus all other income) exceeds $25,000 for single filers or $32,000 for married couples filing jointly.
  • If you are below the threshold, you owe no federal tax on your SSDI, regardless of how much other income you have.
  • Up to 50 percent of your benefits may be taxable if you exceed the threshold; up to 85 percent if your combined income is very high.
  • State tax rules vary widely — some states do not tax SSDI at all, while others follow federal rules or have their own thresholds.
  • You can request that the Social Security Administration withhold federal income tax from your monthly SSDI payment to avoid a tax bill at filing time.

How the IRS calculates whether your SSDI is taxable

The IRS starts by adding up your "combined income." This is half of your SSDI benefits plus all other income you received during the year. Other income includes wages, self-employment income, interest, dividends, capital gains, pensions, annuities, rental income, and distributions from retirement accounts. It also includes income from a spouse if you file jointly.

Once you have your combined income total, compare it to the threshold for your filing status. If you are single and your combined income is $25,000 or less, you owe no tax on your SSDI. If you are married filing jointly and your combined income is $32,000 or less, you owe no tax. If you are married filing separately, the threshold is zero — meaning any combined income at all may trigger taxation.

If your combined income exceeds the threshold, the IRS taxes the amount above it. For every dollar above the threshold, up to 50 cents of your SSDI becomes taxable. If your combined income is high enough, up to 85 percent of your benefits can be taxed. The exact percentage depends on how far above the threshold you are.

Example: What the calculation looks like

Suppose you are single and receive $1,500 per month in SSDI ($18,000 per year). You also have $10,000 in pension income. Your combined income is ($18,000 ÷ 2) + $10,000 = $19,000. Since $19,000 is below the $25,000 threshold, none of your SSDI is taxable.

Now suppose your pension income is $20,000 instead. Your combined income is ($18,000 ÷ 2) + $20,000 = $29,000. You are $4,000 above the threshold. The IRS taxes 50 percent of the amount over the threshold: $4,000 × 0.50 = $2,000. So $2,000 of your $18,000 SSDI is taxable income for the year.

If your combined income climbs even higher — say to $44,000 — a second calculation kicks in. At that point, up to 85 percent of your benefits may be taxable. The exact amount depends on how much you exceed both thresholds, but the result is that more of your SSDI counts as taxable income.

Requesting tax withholding from your SSDI payment

If you know your SSDI will be taxable, you can ask Social Security to withhold federal income tax directly from your monthly benefit. This way you do not have to pay a lump sum when you file your tax return.

To request withholding, fill out IRS Form W-4V (Voluntary Withholding Request). You can get the form from the IRS website (irs.gov), from a Social Security office, or by calling Social Security at 1-800-772-1213. You choose the withholding rate — usually 10, 15, 25, or 28 percent of your monthly benefit.

Mail the completed form to your local Social Security office, or bring it in person. Social Security will start withholding the following month. You can change or stop withholding at any time by submitting a new Form W-4V.

State income tax and SSDI

Thirteen states do not tax SSDI at all: Alabama, Arkansas, Florida, Georgia, Illinois, Indiana, Iowa, Kentucky, Louisiana, Mississippi, Missouri, North Carolina, and Ohio. If you live in one of these states, you owe no state income tax on your SSDI, even if you owe federal tax.

Most other states follow the federal rule: if your SSDI is taxable under federal law, it is also taxable under state law. A few states have different thresholds or rules. Colorado, for example, exempts SSDI from state tax entirely. Connecticut and Kansas have their own income thresholds that differ from the federal ones.

Check your state's department of revenue website or call their tax information line to learn the rule in your state. If you move to a new state during the year, you may owe tax to both states, so it is worth asking about this when you relocate.

What to do if you receive a notice about SSDI taxation

If the IRS sends you a notice saying part of your SSDI is taxable and you disagree, you have the right to respond. The notice will include instructions on how to file a response and a important date — usually 30 days. Do not ignore it.

Common reasons to dispute a notice include: the IRS miscalculated your combined income, you reported income incorrectly on your tax return, or your filing status changed. If you believe an error was made, gather your documents (tax returns, Social Security statements, pension statements, and any other income records) and send them to the IRS address on the notice with a written explanation.

If you are unsure whether you calculated your tax correctly, a tax professional or a volunteer tax site (such as VITA, which offers free tax help to people with low to moderate income) can review your return. You can find a VITA site near you at irs.gov/vita.

Planning ahead if you have other income sources

If you are working part-time, receiving a pension, or have investment income, you may want to plan your income to stay below the SSDI tax threshold. This is not always possible, but understanding the threshold can help you make decisions about when to claim retirement accounts, whether to delay a pension, or how much to work.

For example, if you are close to the $25,000 threshold and you have control over when you receive income (such as deciding when to take a distribution from an IRA), timing that income strategically can reduce or eliminate SSDI taxation. A tax professional or financial advisor can help you model different scenarios.

Keep in mind that other benefits may also be affected by your income. Supplemental Security Income (SSI), Medicare cost-sharing programs, and housing information all have their own income limits. A change that reduces your SSDI tax bill might affect your other benefits, so it is worth looking at the whole picture.

Frequently Asked Questions

Can I get a refund if I overpaid taxes on my SSDI?

Yes. If you had too much tax withheld from your SSDI or you paid more than you owed, you can claim a refund when you file your tax return. The IRS will send the refund to you, usually within a few weeks of processing your return. If you underpaid, you will owe the difference.

Does working part-time while on SSDI affect whether my benefits are taxable?

Yes. Wages from part-time work count as "other income" in the combined income calculation. So if you earn $5,000 from work and receive $18,000 in SSDI, your combined income is ($18,000 ÷ 2) + $5,000 = $14,000. If that pushes you over the threshold, part of your SSDI becomes taxable.

What if I did not know my SSDI was taxable and did not file a return?

Contact the IRS as soon as possible. You can file a late return and may owe back taxes plus interest, but the sooner you file, the lower the interest charges. Call the IRS at 1-800-829-1040 or visit irs.gov to file online. If you cannot pay what you owe, the IRS offers payment plans.

Does my spouse's income count toward the SSDI tax threshold if we file separately?

No. If you file separately, only your own income counts. However, the threshold for married filing separately is zero, meaning any combined income at all may trigger taxation. Filing jointly usually results in a lower tax bill if one spouse has SSDI and the other has other income.

If I move to a state with no SSDI tax, do I get a refund for taxes I already paid?

No. You owe tax based on your state of residence when you earned the income, not where you live now. If you moved mid-year, you may owe tax to both your old state and your new state. File a part-year resident return in both states and check each state's rules on how they handle moves.