Whether you must report SSDI on your taxes depends on your total income

You do not automatically have to report SSDI benefits on your federal tax return just because you received them. Whether you report them depends on how much other income you had that year. If your combined income stays below a certain threshold, you file no return at all. If you cross that threshold, you report the benefits—but only a portion of them may be taxable.

The IRS calls this the "combined income" test. Combined income means your adjusted gross income, plus nontaxable interest, plus half of your SSDI benefits. The threshold changes slightly each year. For 2024, if you are single and your combined income is under $25,000, you do not report SSDI on your return. If you are married filing jointly, the threshold is $32,000. These numbers increase slightly each year.

If your combined income exceeds the threshold, you will report some of your SSDI as taxable income. The amount is never more than 85 percent of your benefits, and often much less. The exact calculation depends on how far above the threshold you are and what kind of other income you have.

Key Takeaways

  • You only report SSDI on your tax return if your combined income (other income plus half your benefits) exceeds $25,000 for single filers or $32,000 for married couples filing jointly in 2024.
  • Combined income includes wages, self-employment income, interest, dividends, and other sources—not just earnings from work.
  • If you must report SSDI, the IRS worksheet determines what portion is taxable, which is never more than 85 percent of your benefits.
  • Social Security sends you a Form SSA-1099 each January showing how much you received, which you use to complete the IRS worksheet.

How the combined income threshold works

The combined income test is the first step. You add three things together: your adjusted gross income (wages, self-employment income, taxable interest, taxable dividends, and other sources), your nontaxable interest (usually from municipal bonds), and half of your SSDI benefits for the year. If that total is below the threshold for your filing status, you stop—you have no SSDI tax reporting to do.

If your combined income is above the threshold, you move to the second step: calculating how much of your SSDI is taxable. The IRS provides a worksheet for this in the instructions to Form 1040. The worksheet compares your combined income to two thresholds (called "tier one" and "tier two"). Depending on where your income falls, between 0 and 85 percent of your benefits become taxable income.

The thresholds are the same for all filers: tier one is $25,000 for single filers and $32,000 for married couples filing jointly. Tier two is $34,000 for single filers and $44,000 for married couples. These amounts do not adjust for inflation—they have been the same since 1993.

What counts as income for the combined income test

Combined income includes almost everything except SSDI itself. Wages from work count. Self-employment income counts. Interest from savings accounts and CDs counts. Taxable dividends count. Capital gains count. Rental income counts. Pension income counts. Income from a part-time job counts.

Nontaxable interest also counts toward combined income, even though it is not taxable. This is usually interest from municipal bonds. The point of including it is to capture your total economic income, not just what the IRS taxes.

A few things do not count: Supplemental Security Income (SSI) does not count. Veterans benefits do not count. Workers' compensation does not count. Gifts do not count. Loans do not count. Return of your own principal from savings does not count. The key is that combined income measures money you earned or received as income, not money you already owned or borrowed.

How much of your SSDI becomes taxable

If your combined income exceeds the tier-one threshold, the IRS worksheet calculates your taxable SSDI in two steps. First, it compares the amount you are over tier one to half of your benefits. Whichever is smaller becomes "provisional taxable benefits." Then it checks whether your combined income also exceeds tier two. If it does, an additional amount up to 85 percent of your benefits may become taxable.

In practice, this means most people with combined income between $25,000 and $34,000 (single) have roughly 50 percent of the excess taxable. People with combined income above $34,000 may have up to 85 percent of their benefits taxable, but the calculation is complex and depends on the exact numbers.

The IRS worksheet walks through this step by step. You do not have to understand the logic—you follow the lines in order. The worksheet is in the instructions to Form 1040, and it is also available on the IRS website. If the math is confusing, a tax preparer can do it for you.

What form you receive and how to use it

In January, Social Security mails you a Form SSA-1099 showing how much SSDI you received in the previous year. Box 5 on that form shows your total benefits. You use this number in the IRS worksheet to calculate your combined income and your taxable portion.

Keep the SSA-1099 with your tax records. You do not attach it to your return, but you need it to fill out the worksheet. If you did not receive an SSA-1099 by early February, contact Social Security at 1-800-772-1213 to request a replacement.

If you file your return electronically, your tax software will ask about your SSDI and walk you through the combined income calculation. If you file by paper, you complete the worksheet by hand and keep it with your records—you do not send it to the IRS.

State taxes and SSDI

Most states do not tax SSDI at all, regardless of your income. However, a few states tax SSDI the same way the federal government does: Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, and Vermont. If you live in one of these states, you may owe state tax on a portion of your benefits even if you owe no federal tax.

State tax rules vary. Some states use the same combined income thresholds as the federal government; others use different ones. If you live in a state that taxes SSDI, your state tax form or instructions will explain the calculation. A tax preparer familiar with your state can help if the rules are unclear.

If you move to a different state during the year, you report income to both states for the months you lived in each. Your state tax return will ask where you lived and for how long.

What to do if you think you owe tax on SSDI

If your combined income is above the threshold, you have three options: file a return and report the taxable portion of your SSDI, have taxes withheld from your SSDI payments, or make estimated tax payments.

Most people file a return. You complete the IRS worksheet, calculate your taxable SSDI, and report it on line 5b of Form 1040. You then calculate your total tax owed and either pay it with your return or claim a refund if you overpaid through withholding.

If you prefer not to file a return, you can ask Social Security to withhold federal income tax from your SSDI payments. You do this by completing Form W-4V and sending it to your local Social Security office. You choose a withholding rate (10, 15, 25, or 35 percent), and Social Security withholds that amount from each payment. This does not reduce your SSDI—it just sets aside money for taxes. At the end of the year, you may still need to file a return if you had other income.

If you have a large amount of other income and expect to owe a lot of tax, you may need to make quarterly estimated tax payments. The IRS provides Form 1040-ES to calculate these. A tax preparer can help you decide if estimated payments are necessary.

Frequently Asked Questions

If I have no other income, do I have to file a tax return?

No. If your SSDI is your only income, your combined income is half your benefits, which is almost certainly below the threshold. You do not have to file a return. However, if you had taxes withheld from your SSDI, you may want to file to claim a refund.

Does working part-time while on SSDI affect my tax reporting?

Yes. Wages from work count toward your combined income. If your wages plus half your SSDI exceed the threshold, you must report taxable SSDI on your return. You also report your wages as usual. Note that SSDI has separate work rules that may reduce your benefits if you earn above a certain amount—tax reporting is separate from those rules.

What if I received SSDI for only part of the year?

You report only the SSDI you actually received. The SSA-1099 shows the correct amount. If you started or stopped receiving SSDI mid-year, the form reflects that. You use the actual amount on the form in the IRS worksheet.

Can I deduct anything related to my disability from my taxes?

You may be able to deduct certain medical expenses if you itemize deductions and your total medical expenses exceed 7.5 percent of your adjusted gross income. This is separate from SSDI reporting. A tax preparer can review your situation to see if you may have access to.

What happens if I make a mistake on my SSDI tax reporting?

If you filed a return and made an error, you can file an amended return using Form 1040-X. If the IRS audits your return and finds an error, they will recalculate your tax and send you a bill or refund. If you withheld too much tax, you can adjust your withholding rate on Form W-4V, or you can claim the overpayment as a refund on your next return.