Whether you pay tax on disability income depends on your total income and filing status

Social Security Disability Insurance (SSDI) payments may or may not be taxable. The IRS taxes SSDI the same way it taxes Social Security retirement benefits — based on your combined income, not just the disability payment itself. Combined income includes your SSDI, wages, interest, dividends, and other money you receive. If your combined income falls below a certain threshold, you owe no federal tax on your benefits. If it exceeds that threshold, you may owe tax on up to 85 percent of your SSDI.

The threshold depends on your filing status. For a single filer, the first threshold is $25,000. For married filing jointly, it is $32,000. These figures have not changed since 1984, so they affect far more people now than they did then. If your combined income exceeds these amounts, you will use a worksheet to calculate how much of your SSDI is taxable.

Key Takeaways

  • SSDI is taxable only if your combined income (SSDI plus wages, interest, and other income) exceeds $25,000 for single filers or $32,000 for married filing jointly.
  • If you are taxed, no more than 85 percent of your SSDI can be included in your taxable income, even if your combined income is very high.
  • You calculate taxable SSDI using IRS Worksheet 1 or Worksheet 2, depending on whether you have nontaxable income like municipal bond interest.
  • The IRS sends Form SSA-1099 each January showing your SSDI for the previous year, which you use to complete your tax return.
  • If you work while receiving SSDI, your wages count toward combined income and may push you over the threshold, making your benefits taxable.

How the IRS calculates combined income

Combined income is not the same as adjusted gross income (AGI). The IRS defines combined income as your AGI plus any nontaxable interest (such as interest from municipal bonds) plus half of your SSDI for the year. This half-SSDI figure is what makes the calculation different from other income sources.

If you have wages from work, those wages are part of your AGI and count toward combined income. If you have a pension, that counts too. If you have investment income, rental income, or self-employment income, all of it counts. The only common income that does not count is Supplemental Security Income (SSI), which is a different program from SSDI.

The reason half your SSDI is included in the combined income calculation is historical — it reflects an assumption about how much of the benefit represents your own contributions versus government funds. This means you can have SSDI of $2,000 per month and still fall below the threshold if you have no other income.

The two-tier tax system for SSDI

The IRS uses two tiers to determine how much SSDI is taxable. The first tier applies if your combined income is between the threshold ($25,000 single, $32,000 married filing jointly) and a second threshold ($34,000 single, $44,000 married filing jointly). In this range, up to 50 percent of your SSDI may be taxable.

The second tier applies if your combined income exceeds the second threshold. In this range, up to 85 percent of your SSDI may be taxable. The actual amount depends on how far above the threshold you are. Even at very high combined income, the IRS will never tax more than 85 percent of your SSDI in a single year.

You do not calculate this yourself by guessing. The IRS provides Worksheet 1 (for people with only taxable income) and Worksheet 2 (for people with nontaxable interest) in the instructions to Form 1040. These worksheets walk you through the calculation step by step. Many tax software programs also calculate this automatically if you enter your SSDI amount.

What form shows your SSDI for tax purposes

Each January, the Social Security Administration sends you Form SSA-1099, which shows the total SSDI you received in the previous calendar year. This is the figure you use on your tax return. If you did not receive a Form SSA-1099 by early February, contact Social Security to request one.

The form shows SSDI only — it does not show whether your benefits are taxable or calculate your tax liability. That is your responsibility or your tax preparer's responsibility. Some people receive Form SSA-1099 but owe no tax because their combined income is below the threshold. Others receive it and discover they owe tax for the first time.

If you have questions about the amount shown on Form SSA-1099, you can contact Social Security's toll-free number at 1-800-772-1213 or visit your local Social Security office. If the amount is wrong, Social Security can issue a corrected form.

How work affects whether your SSDI is taxable

If you work while receiving SSDI, your wages count toward combined income. This can push you over the threshold and make your benefits taxable even if they would not be taxable otherwise. For example, if you earn $20,000 in wages and receive $12,000 in SSDI, your combined income is roughly $26,000 (wages plus half your SSDI), which exceeds the $25,000 threshold for single filers.

The Social Security Administration has a separate program called the Ticket to Work that allows you to work without losing your SSDI benefits, but working does not shield your benefits from taxation. Your wages still count toward combined income for tax purposes.

If you are considering work or have recently started working, it is worth calculating your combined income before the tax year ends. This helps you understand whether you will owe tax and how much. A tax preparer or the IRS can help with this calculation.

State and local taxes on SSDI

Most states do not tax SSDI, but a few do. The states that tax SSDI are 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 income tax on your SSDI even if you owe no federal tax.

Each state has its own rules about how much SSDI is taxable and what income thresholds explore. Some states follow the federal system closely; others have different thresholds or different percentages. If you live in a state that taxes SSDI, contact your state tax authority or a tax preparer to understand your state's rules.

Local taxes on SSDI are rare, but some cities and counties have income taxes. Check with your local tax authority if you live in a city or county with an income tax.

What to do if you owe tax on your SSDI

If you calculate that you owe federal tax on your SSDI, you can pay it when you file your tax return, or you can arrange to have taxes withheld from your SSDI payments. To request withholding, you complete Form W-4V and submit it to Social Security. Social Security will then withhold 7, 10, 15, or 25 percent of your SSDI each month, depending on what you request.

Withholding does not reduce your SSDI payment — it straightforward sets aside part of what you would receive and sends it to the IRS as a tax payment. This can help you avoid owing a large amount when you file your return. Many people choose withholding if they know they will owe tax.

If you did not withhold and now owe tax from a previous year, you can pay the IRS directly, set up a payment plan, or file an amended return if you made an error. The IRS website has information about payment options.

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 your combined income is below the threshold ($25,000 single, $32,000 married filing jointly), you have no tax filing requirement. However, if you have other income or your combined income exceeds the threshold, you must file a return to report your SSDI and pay any tax owed.

What if I receive both SSDI and SSI?

SSI (Supplemental Security Income) is not taxable and does not count toward combined income. Only your SSDI counts. If you receive both, you use only the SSDI amount in the combined income calculation.

Can I reduce my taxable SSDI by donating to charity?

Charitable donations reduce your AGI, which is part of combined income, so they can indirectly reduce the amount of SSDI that is taxable. However, you must itemize deductions on your tax return to claim charitable donations. Many people with SSDI take the standard deduction instead, which does not require itemizing.

What happens if Social Security made an error on my Form SSA-1099?

Contact Social Security when ready at 1-800-772-1213 or visit your local office. Social Security can issue a corrected form. Keep the original form and the corrected form together when you file your tax return. If you already filed and the form was wrong, you can file an amended return using Form 1040-X.

Does my spouse's SSDI affect whether my SSDI is taxable?

No. Each person's SSDI is calculated separately for tax purposes. Your spouse's SSDI does not count toward your combined income. However, if you file a joint return, you combine your separate combined incomes to determine your household's tax liability.