Most SSDI recipients pay no federal income tax on their benefits

Whether you owe federal income tax on your SSDI payments depends on your total income for the year, not on receiving SSDI alone. The Social Security Administration uses a formula called combined income to determine if any of your benefits are taxable. Combined income includes your adjusted gross income, nontaxable interest, and half of your Social Security benefits.

If your combined income stays below a certain threshold, you owe nothing on your SSDI. If it exceeds that threshold, you may owe tax on up to 85 percent of your benefits. The threshold amounts are set by federal law and do not change year to year — they are $25,000 for single filers and $32,000 for married couples filing jointly.

The key point: SSDI itself is not automatically taxable. Other income you receive during the year is what triggers the tax calculation. If SSDI is your only income source, you almost certainly will not owe federal tax on it.

Key Takeaways

  • SSDI benefits are only taxable if your combined income (wages, interest, half your benefits) exceeds $25,000 for single filers or $32,000 for married couples filing jointly.
  • If you have no other income besides SSDI, you will not owe federal income tax on your benefits.
  • Combined income thresholds have not changed since 1984 and are the same whether you receive SSDI or retirement benefits.
  • You must file a tax return to report SSDI income if you meet the filing threshold, even if no tax is owed.
  • State income tax rules vary — some states tax SSDI, others do not, and a few have different thresholds than the federal government.

How the combined income calculation works

The Social Security Administration provides a worksheet each year to help you calculate combined income. Start with your adjusted gross income (the number from your tax return after deductions). Add any nontaxable interest you earned, such as interest from municipal bonds. Then add half of your total Social Security benefits for the year — this includes both SSDI and any retirement benefits you receive.

Once you have that total, compare it to the threshold for your filing status. If the number is $25,000 or less (single) or $32,000 or less (married filing jointly), none of your benefits are taxable. If it exceeds the threshold, you move to the second calculation to determine how much of your benefit is subject to tax.

The second calculation is more complex and involves comparing your excess income to two additional thresholds ($9,000 and $12,000 for single filers, $12,000 and $16,000 for married couples). The result tells you what percentage of your benefits — up to 85 percent — you must report as taxable income on your federal return.

What counts as income for this calculation

Wages from work count toward combined income. So does interest from savings accounts, dividends from stocks, rental income, and income from self-employment. Nontaxable interest (such as from municipal bonds) also counts, even though it is not taxed separately.

Some income does not count. Supplemental Security Income (SSI) is separate from SSDI and does not factor into the calculation. Gifts do not count. Neither do returns of your own principal from investments — only the earnings count. Railroad Retirement benefits follow their own rules and are not included in this calculation.

If you work while receiving SSDI, your wages are included in combined income. This is one reason why SSDI recipients who return to work sometimes find that their benefits become partially taxable, even though the work itself is permitted under SSDI rules.

Filing requirements when you receive SSDI

You must file a federal tax return if your gross income meets the threshold set by the IRS for your age and filing status. For 2024, a single person under 65 must file if gross income is $14,600 or more. The threshold is higher if you are 65 or older.

Gross income for filing purposes is different from combined income for the SSDI tax calculation. Gross income includes wages and taxable interest but does not include nontaxable interest or half your benefits. This means you might have to file a return even if none of your SSDI is taxable, because your other income alone pushes you over the filing threshold.

If you are unsure whether you must file, the IRS provides an interactive tool on its website. You can also contact a tax professional or call the IRS directly. Filing even when you owe no tax is important — it protects your record and may help you claim refundable tax credits like the Earned Income Tax Credit if you work.

State income tax and SSDI

Thirteen states currently tax SSDI benefits: Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, Vermont, and West Virginia. Illinois taxes SSDI only for people over 61. Each state uses its own rules, and some have thresholds different from the federal $25,000 and $32,000.

Some states that tax SSDI offer exemptions based on age or income level. For example, a state might tax SSDI for people under 59 but not for those 59 and older. Others tax SSDI the same way the federal government does. A few states have no income tax at all, so SSDI is never taxable there.

If you live in a state that taxes SSDI, you will need to file a state return and report your benefits according to that state's rules. Contact your state tax authority or a tax professional to learn the specific rules for your state.

Reporting SSDI on your tax return

The Social Security Administration sends you a Form SSA-1099-SM each January showing the total SSDI you received the previous year. This form goes to you and to the IRS. You use the amount on this form to calculate your combined income and to complete your federal tax return if any of your benefits are taxable.

On your federal return, you report SSDI using Form 1040 and Schedule 1. The IRS provides a worksheet to help you determine how much of your benefit is taxable. If you use tax software, the program will walk you through the calculation. If you file by hand or with a tax professional, they will use the same worksheet.

Keep your Form SSA-1099-SM with your tax records. If the IRS questions your return, you will need to show that the amount you reported matches the form the Social Security Administration sent you.

What happens if you do not report SSDI income

If you owe tax on your SSDI and do not file a return or report the income, the IRS may assess penalties and interest. The penalty for failing to file is usually 5 percent of the unpaid tax for each month the return is late, up to 25 percent. Interest accrues daily on any unpaid tax.

If the IRS discovers the unreported income through its matching program with the Social Security Administration, it will send you a notice. At that point, you can file the return and pay what you owe, but you will also owe the penalties and interest that have accumulated.

If you believe you made an error on a past return, you can file an amended return using Form 1040-X. The IRS generally allows you to amend a return within three years of the original filing date.

Frequently Asked Questions

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

No. If SSDI is your only income and you have no other income that triggers the filing requirement, you do not have to file a federal return. However, filing may benefit you if you are may have access to to refundable credits like the Earned Income Tax Credit or the Child Tax Credit.

Can I reduce my taxable SSDI by making charitable donations?

No. Charitable donations reduce your taxable income, but they do not reduce your combined income for the SSDI tax calculation. The SSDI tax formula is separate from the standard income tax calculation, so deductions do not affect whether your benefits are taxable.

What if I disagree with the amount on my Form SSA-1099-SM?

Contact the Social Security Administration directly. You can call 1-800-772-1213 or visit your local Social Security office. Bring your records showing what you received. If the form is wrong, the Social Security Administration will issue a corrected form, and you can file an amended tax return if needed.

Does working part-time make my SSDI taxable?

It can. Your wages count toward combined income. If your wages plus other income plus half your SSDI exceeds the threshold, some of your benefits become taxable. However, SSDI work incentives may allow you to work and keep your benefits — the tax treatment is separate from whether you can work.

If I live in two states during the year, which state tax rules explore?

Generally, you file a return in the state where you lived on December 31 of that year. If you moved between states that have different SSDI tax rules, contact both state tax authorities to confirm your filing obligations. Some states have reciprocal agreements that may affect your liability.