Whether You Pay Tax on Disability Depends on Your Total Income

You may owe federal income tax on your SSDI or SSI payments, but only if your total income crosses a threshold the IRS sets each year. The threshold is low — it includes not just your disability pay but also wages, interest, pensions, and other money you receive. If you're married and file jointly, the threshold is higher than if you file alone.

The IRS calls this calculation "combined income," and it determines what portion of your disability check, if any, becomes taxable. You don't automatically owe tax just because you receive SSDI. Many people on disability pay nothing because their total income stays below the line. Others pay tax on 50 percent or 85 percent of their benefits, depending on how far over the threshold they go.

Social Security sends you a form called SSA-1099 each January showing how much you received the previous year. This is the number you use when you file your tax return. You don't have to wait for this form to know whether you'll owe tax — you can calculate it yourself using the IRS worksheet, or ask a tax preparer to do it.

Key Takeaways

  • You owe tax on SSDI only if your combined income (disability pay plus all other income) exceeds a threshold that changes yearly and depends on your filing status.
  • Combined income is calculated using a specific IRS formula that counts half your SSDI plus all your other income, and the result determines what percentage of your benefits are taxable.
  • Social Security sends you form SSA-1099 in January showing your prior-year benefits, which you use to file your tax return.
  • Many people on SSDI owe no federal tax because their total income stays below the threshold, but you should calculate your own situation rather than assume.
  • State income tax rules vary — some states don't tax SSDI at all, while others follow the federal formula or have their own thresholds.

How the IRS Calculates Combined Income

The IRS uses a specific formula to decide whether your SSDI is taxable. Start with half your SSDI payment for the year. Add all your other income: wages, self-employment income, interest, dividends, pensions, rental income, and any other money you received. This total is your "combined income."

Once you have that number, compare it to the IRS threshold for your filing status. For 2024, the threshold is $25,000 if you're single, $32,000 if you're married filing jointly, and $0 if you're married filing separately. These thresholds change each year, so check the current year's worksheet when you file.

If your combined income is below the threshold, you owe no tax on your SSDI. If it's above the threshold, the IRS taxes either 50 percent or 85 percent of your benefits, depending on how far over you go. The exact calculation is complex, which is why many people use the IRS worksheet or a tax preparer.

What Counts as Income for This Calculation

The IRS includes almost everything you receive as income for the combined income test. Wages from work count. Self-employment income counts. Interest from a savings account counts, even if it's only a few dollars. Dividends, capital gains, rental income, and pension payments all count.

Some things do not count. Supplemental Security Income (SSI) is separate from SSDI and is not included in the combined income calculation. Gifts do not count. Money you receive from selling your home at a loss does not count. Certain railroad retirement benefits have their own rules and should be calculated separately.

If you're unsure whether a specific payment counts, the IRS Publication 915 lists what to include. You can also ask a tax preparer or call the IRS directly. Getting this right matters because including income you shouldn't include might make you think you owe tax when you don't.

The Two Tax Brackets for SSDI Benefits

Once your combined income exceeds the threshold, the IRS doesn't tax all your SSDI at once. Instead, you enter one of two brackets depending on how far over the threshold you go.

In the first bracket, you pay tax on up to 50 percent of your benefits. This bracket applies when your combined income is between the threshold and a second, higher threshold. For 2024, that second threshold is $34,000 for single filers and $44,000 for married filing jointly. If your combined income falls in this range, the taxable amount is the lesser of (a) 50 percent of your benefits, or (b) 50 percent of the amount your combined income exceeds the first threshold.

In the second bracket, you pay tax on up to 85 percent of your benefits. This applies when your combined income exceeds the second threshold. The calculation is more complex, but the result is that a larger portion of your SSDI becomes taxable. The IRS worksheet walks you through both brackets step by step.

State Income Tax Rules for Disability Pay

Federal tax is only part of the picture. Some states also tax SSDI, while others don't tax it at all. The rules vary widely, and your state's rule may be different from the federal rule.

About a dozen states do not tax SSDI under any circumstances. These include Illinois, Kansas, Mississippi, Missouri, and others. If you live in one of these states, you owe no state income tax on your disability benefits, even if you owe federal tax.

Other states follow the federal formula — they tax SSDI only if your combined income exceeds the federal threshold. Still others have their own thresholds or rules. Some states exclude SSDI from taxable income but tax other disability payments. You need to check your specific state's rules, which you can find on your state's revenue or taxation website, or by calling your state tax office.

How to Report SSDI on Your Tax Return

In January, Social Security mails you form SSA-1099 showing your SSDI for the previous year. This form goes to box 5 of your federal tax return. You also report all your other income on the appropriate lines — wages on line 1a, interest on line 2b, and so on.

If none of your SSDI is taxable, you still report the full amount on your return. The IRS worksheet determines that zero of it is taxable, and you move on. If some of your SSDI is taxable, you calculate the taxable amount using the IRS worksheet (found in Publication 915), then report that taxable amount on line 5b of your return.

If you use tax software or a tax preparer, they will ask you for your SSA-1099 and your other income, then run the calculation for you. If you file by hand, you must complete the worksheet yourself or ask for help. Many libraries and community centers offer free tax preparation during tax season, and the IRS also offers free filing options if your income is below a certain level.

What Happens If You Underpay or Overpay Tax

If you owe tax on your SSDI but don't pay it, the IRS will eventually contact you. You may owe penalties and interest on top of the original tax. If you're on a tight budget, you can set up a payment plan with the IRS, which lets you pay in installments rather than all at once.

If you overpay — meaning you had too much tax withheld from other income, or you paid more than you owed — you'll receive a refund when you file your return. Some people arrange to have taxes withheld from their SSDI check itself, which can help may support they don't underpay. You can request this by completing form W-4V and sending it to your local Social Security office.

The key is to file your return on time, even if you can't pay the full amount you owe. Filing late triggers additional penalties, while paying late only triggers interest and a smaller penalty. If you need more time, you can request an extension, though this extends the filing important date, not the payment important date.

Frequently Asked Questions

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

Not necessarily. If SSDI is your only income and none of it is taxable (because your combined income is below the threshold), you don't have to file. However, if you have any other income — even a small amount of interest or a part-time job — you should calculate whether you owe tax. When in doubt, filing is safer than not filing.

Can I have taxes withheld from my SSDI check?

Yes. Complete form W-4V and submit it to your local Social Security office. You choose the percentage you want withheld — 7, 10, 15, or 25 percent. This reduces your monthly check but can prevent you from owing a large amount at tax time. It's useful if you know you'll owe tax but don't want to pay a lump sum in April.

What if I work part-time while receiving SSDI?

Your wages count as income for the combined income test. Add half your SSDI plus all your wages to see if you exceed the threshold. If you do, part of your SSDI becomes taxable. You may also be subject to SSDI work incentives and earnings limits, which are separate from tax rules — contact Social Security to understand how work affects your benefits.

Does my spouse's income count toward the combined income threshold?

Only if you file jointly. If you're married and file a joint return, you combine both spouses' income. If you file separately, only your own income counts. Filing separately usually results in more tax, so most married couples file jointly, but the choice is yours.

What if I disagree with the amount of SSDI shown on my SSA-1099?

Contact Social Security directly with your concern. They can verify the amount and issue a corrected form if there's an error. Keep a copy of your SSA-1099 and any correspondence with Social Security in case the IRS questions your return later.