You must file taxes on SSDI if your income exceeds the IRS threshold for your filing status

Social Security Disability Insurance (SSDI) is taxable income to the IRS, but only if your combined income exceeds a certain amount. Combined income means your SSDI benefits plus any other income you receive—wages, interest, pensions, or other benefits. The threshold depends on your filing status: for single filers it is $25,000; for married filing jointly it is $32,000. If you are married filing separately, the threshold is $0, meaning any SSDI is taxable.

You do not owe taxes on the full amount of your SSDI. The IRS taxes only a portion—up to 50% or 85% of your benefits, depending on how much your combined income exceeds the threshold. This means many people on SSDI owe little or no federal tax even though they must file.

The Social Security Administration sends you a Form SSA-1099-SM each January showing how much SSDI you received in the previous year. You use this form to calculate your tax liability. You will also receive other income forms (W-2s, 1099s) if you had wages or other income.

Key Takeaways

  • You must file a federal tax return if your combined income (SSDI plus other income) exceeds $25,000 (single) or $32,000 (married filing jointly).
  • The IRS taxes only a portion of your SSDI benefits—never the full amount—using a formula based on how much your combined income exceeds the threshold.
  • Form SSA-1099-SM, sent by Social Security in January, shows your total SSDI for the year and is required to calculate what portion is taxable.
  • You can file on your own using IRS worksheets, through free tax software, or with a tax professional; many people on SSDI owe zero tax despite filing.
  • If you did not file in prior years when you should have, you can still file back returns to claim refunds or resolve your account with the IRS.

Gather your income documents before you start

You need three types of documents to file accurately. First, your Form SSA-1099-SM, which Social Security mails to you by January 31 each year. This shows your total SSDI benefits for the previous year. If you did not receive one, you can request it from Social Security by calling 1-800-772-1213 or visiting your local Social Security office.

Second, collect any other income documents: W-2s from employers, 1099 forms (1099-INT for interest, 1099-DIV for dividends, 1099-NEC for self-employment), pension statements, or unemployment benefits statements. If you have no other income, you only need the SSA-1099-SM.

Third, gather records of any federal taxes already withheld. If you had wages, your W-2 will show this. If you had SSDI only, no taxes are withheld unless you requested voluntary withholding from Social Security. You can check your Social Security account online at ssa.gov to see if you set up withholding.

Calculate how much of your SSDI is taxable using the IRS worksheet

The IRS provides a worksheet in Publication 915 to calculate taxable SSDI. The process has two steps. First, add your SSDI benefits plus all other income (wages, interest, pensions, but not the SSDI itself yet). This is your "combined income." Then subtract the threshold for your filing status ($25,000 for single, $32,000 for married filing jointly). If the result is zero or negative, none of your SSDI is taxable and you may not need to file.

If your combined income exceeds the threshold, the IRS taxes up to 50% of the excess. If your combined income is very high (over $34,000 for single filers, $44,000 for married filing jointly), up to 85% of your benefits become taxable. The exact percentage depends on the worksheet calculation in Publication 915, which you can read free from irs.gov.

Example: You are single and received $15,000 in SSDI and $12,000 in wages. Your combined income is $27,000. The threshold is $25,000. The excess is $2,000. Up to 50% of that excess ($1,000) is taxable. You would owe tax on $1,000 of your $15,000 SSDI benefit, not the full amount.

File your return using free software, the IRS Free File program, or a tax professional

You have three main options. Free tax software is available through the IRS Free File program at if your income is below a certain threshold (the limit changes yearly but is typically around $73,000 combined income). The software walks you through the SSDI calculation and generates your return automatically.

If you prefer to file on paper, you can read Form 1040 and Publication 915 from irs.gov, complete the worksheets by hand, and mail your return to the IRS address listed in the instructions. This takes longer but costs nothing.

A tax professional or CPA can file for you if you prefer not to do it yourself. Many offer free or low-cost services for people with disabilities or low income. You can find local tax help through the IRS Volunteer Income Tax information (VITA) program by calling 211 or visiting irs.gov/vita.

Regardless of which method you choose, file by April 15 (or the next business day if April 15 falls on a weekend or holiday). If you cannot file by then, you can request an extension by filing Form 4868, which gives you until October 15 to file.

Understand what happens if you owe tax or receive a refund

If your calculation shows you owe federal tax, you must pay it by the April 15 important date. You can pay online through irs.gov, by mail with a check, or through an installment agreement if you cannot pay in full. If you set up an installment plan, the IRS charges interest and a setup fee, but you avoid a lump-sum payment.

If you had taxes withheld from wages or requested voluntary withholding from SSDI, you may receive a refund. The IRS processes refunds within 21 days if you file electronically, or up to 6 weeks if you file on paper. You can check your refund status at irs.gov/refunds using your Social Security number and filing status.

If you owe back taxes from prior years, you can still file those returns. The IRS will calculate penalties and interest, but filing stops the interest from growing further. Many people on SSDI discover they should have filed in earlier years; filing late is better than not filing at all.

Set up voluntary withholding if you want taxes taken from your SSDI each month

If you do not want to owe a lump sum at tax time, you can ask Social Security to withhold federal taxes from your monthly SSDI payment. This works the same way as withholding from a paycheck—Social Security deducts the amount you request and sends it to the IRS.

To set up withholding, complete Form W-4V (Voluntary Withholding Request) and submit it to your local Social Security office or mail it to Social Security. You can request withholding of 7%, 10%, 15%, or 22% of your monthly benefit. Once you set it up, it continues each month until you cancel it.

Withholding does not change whether you must file a tax return—you still file if your combined income exceeds the threshold. But it reduces the amount you owe (or increases your refund) at tax time. If you had no other income and only SSDI, withholding may result in a refund when you file.

File amended returns if you made an error or missed filing in prior years

If you filed a return and later realized you made a mistake, you can file an amended return using Form 1040-X. You have three years from the original filing important date to amend and claim a refund. If you owe additional tax, you can amend at any time, though the IRS will charge interest and penalties for late payment.

If you did not file in prior years when you should have, you can file back returns now. Start with the most recent unfiled year and work backward. The IRS will calculate penalties for late filing, but filing is still worthwhile if you are owed a refund—the IRS does not charge interest on refunds, only on taxes owed.

You can file amended or back returns on paper using Form 1040-X, or through a tax professional. If you need help, contact the IRS at 1-800-829-1040 or visit a VITA site (found through 211 or irs.gov/vita). Many VITA sites specialize in helping people file back returns.

Frequently Asked Questions

Do I have to file taxes if I only receive SSDI and no other income?

Only if your SSDI alone exceeds $25,000 (single) or $32,000 (married filing jointly). Most people on SSDI receive less than this, so they do not have to file. However, if you had any other income—even $1 in interest—you must file if your combined income exceeds the threshold.

What if I cannot afford to pay the taxes I owe?

You can set up a payment plan with the IRS by filing Form 9465 or requesting one online at irs.gov. You can also request an Offer in Compromise if you genuinely cannot pay, though approval is difficult. Contact the IRS at 1-800-829-1040 to discuss your options.

Will filing taxes affect my SSDI benefits?

No. Filing a tax return does not change your SSDI payment amount or your benefit status. The IRS and Social Security are separate agencies. Taxes owed are a separate debt from your benefits.

Can I file electronically if I receive SSDI?

Yes. You can file electronically through free IRS software, a tax professional, or a paid software service. Electronic filing is faster and more accurate than paper filing, and the IRS processes refunds more quickly.

What if Social Security sent me the wrong SSA-1099-SM amount?

Contact Social Security when ready at 1-800-772-1213 with your concern. If the amount is wrong, Social Security will issue a corrected form. Do not file your tax return until you have the correct form, or you may report the wrong income to the IRS.