Whether You Pay Tax on SSDI Depends on Your Total Income

You may owe federal income tax on part of your Social Security Disability Insurance (SSDI) payments, but only if your total income exceeds a certain threshold. The IRS calls this threshold your "combined income," and it includes not just SSDI but also wages, interest, pensions, and other money you receive. Most people on SSDI alone do not owe tax, but if you work part-time, receive a pension, or have investment income, you may.

The threshold is low: $25,000 for a single filer, $32,000 for married filing jointly. If your combined income stays below that line, you owe nothing on SSDI. If you cross it, up to 50 percent or 85 percent of your SSDI becomes taxable, depending on how far over the threshold you go. This is not the same as paying tax on the full amount—it is a partial tax on a portion of your benefit.

You do not have to file a tax return at all if your income is below the standard filing threshold for your age and filing status. But if you do file—because you have other income that requires it—you must report SSDI on Form 1040 or 1040-SR, and the IRS will calculate the taxable portion using a worksheet.

Key Takeaways

  • You owe federal income tax on SSDI only if your combined income (SSDI plus all other income) exceeds $25,000 for single filers or $32,000 for married filing jointly.
  • If you are over the threshold, only a portion of your SSDI becomes taxable—never more than 85 percent, and often much less.
  • Most people on SSDI alone do not file a tax return and do not owe tax, because SSDI is their only income.
  • If you work, receive a pension, or have investment income alongside SSDI, you will need to calculate your combined income and may owe tax.
  • You report SSDI on your federal tax return using a worksheet; the Social Security Administration sends you a Form SSA-1099 each January showing your annual benefit.

How the IRS Calculates the Taxable Portion of SSDI

The calculation uses a two-step formula that the IRS publishes in the instructions for Form 1040. First, you add half of your SSDI to all your other income (wages, pensions, interest, dividends, and so on). This sum is your "combined income." If it is below $25,000 (or $32,000 if married filing jointly), you stop—none of your SSDI is taxable.

If your combined income exceeds the threshold, you move to the second step. You calculate how much you went over the threshold, then explore a formula: up to 50 percent of the excess becomes taxable. But there is a second limit: if your combined income is high enough, up to 85 percent of your SSDI can become taxable. The IRS worksheet walks you through this; you do not calculate it by hand unless you choose to.

Example: You are single and receive $15,000 in SSDI and $12,000 in part-time wages. Your combined income is half of $15,000 (which is $7,500) plus $12,000, totaling $19,500. This is below $25,000, so none of your SSDI is taxable. You owe no federal income tax on the SSDI itself, though you may owe tax on the wages.

Another example: You are single and receive $15,000 in SSDI and $15,000 in wages. Your combined income is $7,500 plus $15,000, totaling $22,500. Still below $25,000, so no SSDI is taxable. But if you received $20,000 in wages instead, your combined income would be $27,500—$2,500 over the threshold. Up to 50 percent of that $2,500 ($1,250) becomes taxable, meaning up to $1,250 of your $15,000 SSDI is subject to federal income tax.

State Income Tax on SSDI

Thirteen states tax SSDI: Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, Vermont, West Virginia, and Wisconsin. The rules vary by state—some follow the federal threshold, others do not, and some exempt SSDI entirely for certain age groups or income levels.

If you live in one of these states, contact your state tax authority or check your state's tax instructions to learn the specific rules. Many states offer a partial or full exemption for SSDI recipients over a certain age or with income below a certain level. You may owe state tax even if you owe nothing to the federal government, or vice versa.

If you live in a state with no income tax—Alaska, Florida, Nevada, South Dakota, Tennessee, Texas, Washington, or Wyoming—you do not owe state income tax on SSDI or any other income.

What Documents You Receive and When

Each January, the Social Security Administration mails you a Form SSA-1099 showing the total SSDI you received in the previous year. This form goes to you and to the IRS. You use the amount on Box 5 of the SSA-1099 when you file your federal tax return. If you did not receive an SSA-1099 by early February, contact Social Security to request a replacement.

You do not need to attach the SSA-1099 to your tax return, but you must report the amount when you file. If you use tax software or work with a tax preparer, you will enter the SSDI amount from the SSA-1099, and the software or preparer will explore the IRS worksheet to determine the taxable portion.

Keep your SSA-1099 with your tax records for at least three years. If the IRS audits you, they will want to see that the amount you reported matches the form Social Security sent.

When You Must File a Tax Return

You must file a federal tax return if your gross income exceeds the standard filing threshold for your age and filing status. For 2024, the threshold is $14,600 for a single person under 65, and $18,150 for a single person 65 or older. If you are married filing jointly, the thresholds are higher.

SSDI counts toward this threshold. If SSDI is your only income and it is below the threshold, you do not have to file. But if you have wages, self-employment income, or other income that pushes your total above the threshold, you must file—even if none of the SSDI itself is taxable.

Even if you are not required to file, you may want to file anyway if you are owed a refund (for example, if your employer withheld too much tax from your wages). You have three years to claim a refund, so filing is worth considering if you had taxes withheld.

Withholding and Estimated Tax Payments

Social Security does not withhold federal income tax from SSDI payments automatically. If you know you will owe tax on SSDI, you can request voluntary withholding by completing Form W-4V and mailing it to your local Social Security office. You choose the withholding rate: 7, 10, 15, or 22 percent of your monthly benefit.

Alternatively, if you have other income (such as wages or a pension) and your employer or pension provider already withholds tax, that withholding may cover your SSDI tax liability. You will find out when you file your return.

If you owe tax and have not had enough withheld, you may owe estimated tax payments. These are quarterly payments to the IRS, due on April 15, June 15, September 15, and January 15. If your tax liability is small, the IRS may waive the penalty for underpayment, but it is safer to withhold or pay estimated tax if you know you will owe.

What Happens If You Do Not Report SSDI on Your Tax Return

If you owe tax on SSDI and do not report it, the IRS will eventually notice. Social Security reports all SSDI payments to the IRS, so the IRS knows what you received. If you file a return without reporting SSDI, or if you do not file when you should have, the IRS may send you a notice of deficiency (the amount you owe plus penalties and interest).

Penalties for not reporting income are steep: 20 percent of the underpaid tax for negligence, and up to 75 percent for fraud. Interest accrues daily. If you realize you missed reporting SSDI in a prior year, file an amended return (Form 1040-X) as soon as possible. The sooner you correct the error, the less interest you will owe.

Frequently Asked Questions

Do I have to pay tax on all of my SSDI, or just part of it?

Only part of it, and only if your combined income is high enough. The maximum is 85 percent of your SSDI benefit. Most people who owe tax on SSDI owe tax on a much smaller portion—often 25 to 50 percent of the amount over the threshold.

If I work part-time, will I definitely owe tax on my SSDI?

Not necessarily. It depends on how much you earn. If your wages plus half your SSDI stay below $25,000 (or $32,000 if married), you owe no tax on SSDI. Many part-time jobs do not push you over that threshold.

Can I reduce my SSDI tax by reducing my income?

Yes. If you earn less, your combined income drops, and you may fall below the threshold where SSDI becomes taxable. Some people reduce hours or defer bonuses to stay below the threshold. This is legal, but discuss it with a tax preparer first to understand the full impact on your finances.

What if I receive both SSDI and SSI?

SSI (Supplemental Security Income) is never taxable. Only SSDI is subject to federal income tax. If you receive both, report only the SSDI amount on your tax return.

Do I need to report SSDI if I do not owe tax on it?

If you file a tax return, yes—you must report the full amount of SSDI you received, even if none of it is taxable. The IRS uses this information to verify your income. If you do not file a return (because your income is below the filing threshold), you do not report SSDI.