Most SSDI recipients do not report their benefits on their federal income tax return, but some must

Whether you report SSDI on your taxes depends on your combined income—a specific calculation that includes your SSDI payments plus other income sources. If your combined income stays below a threshold set by the IRS, you file your return without reporting SSDI. If it exceeds that threshold, a portion of your benefits becomes taxable and must be reported on Form 1040.

The threshold is $25,000 for single filers and $32,000 for married couples filing jointly. These numbers have not changed since 1984. The calculation itself is not straightforward—it involves adding your adjusted gross income, tax-exempt interest, and half of your SSDI benefits—but the Social Security Administration (SSA) sends you a form each January that does most of the work for you.

The practical result: roughly 15 percent of SSDI beneficiaries owe tax on their benefits. Most do not. But if you have other income—wages, self-employment earnings, pensions, investment income, or taxable interest—you need to check whether you cross the line.

Key Takeaways

  • You only report SSDI on your tax return if your combined income exceeds $25,000 (single) or $32,000 (married filing jointly).
  • Combined income includes your adjusted gross income, tax-exempt interest, and half your SSDI benefits—not just your SSDI alone.
  • The SSA sends Form SSA-1099 in January, which shows your total SSDI payments for the year and helps you calculate whether you owe tax.
  • If you must report SSDI, you use the IRS worksheet in the Form 1040 instructions to calculate how much of your benefits are taxable.
  • State taxes vary: some states tax SSDI, some do not, and some tax it only under certain conditions.

How the IRS calculates combined income

The IRS does not straightforward add your SSDI to your other income. Instead, it uses a formula that includes half of your SSDI benefits. This is called combined income, and it is the number that determines whether any of your benefits are taxable.

Combined income = adjusted gross income + tax-exempt interest + (one-half of SSDI benefits).

Adjusted gross income is the number at the bottom of page 1 of your Form 1040. Tax-exempt interest usually comes from municipal bonds. For most SSDI recipients, the tax-exempt interest piece is zero.

Example: You receive $15,000 in SSDI for the year and have $12,000 in wages. Half your SSDI is $7,500. Your combined income is $12,000 + $0 + $7,500 = $19,500. This is below $25,000, so you do not report SSDI on your return.

Another example: You receive $15,000 in SSDI and have $18,000 in wages. Combined income is $18,000 + $0 + $7,500 = $25,500. This exceeds $25,000, so some of your SSDI is taxable. You must use the IRS worksheet to calculate how much.

The IRS worksheet and how much SSDI becomes taxable

If your combined income exceeds the threshold, the IRS worksheet in the Form 1040 instructions tells you how much of your SSDI is taxable. The worksheet is not difficult, but it has multiple steps and uses two different formulas depending on how far above the threshold you are.

The basic rule: you never pay tax on more than 85 percent of your SSDI benefits, even if your combined income is very high. In practice, most people who owe tax on SSDI pay tax on 50 percent of their benefits.

The IRS publishes the worksheet each year in the instructions for Form 1040. You can also find it on the SSA website. If you use tax software (TurboTax, H&R Block, TaxAct), the software walks you through the calculation and fills in the worksheet for you. If you use a tax preparer, bring your Form SSA-1099 and your other income documents, and they will handle it.

You report the taxable portion of your SSDI on line 5b of Form 1040. You do not report it anywhere else.

Form SSA-1099 and what it tells you

In January, the SSA mails you a Form SSA-1099 (or SSA-1099-SM if you receive Supplemental Security Income instead of SSDI). This form shows the total SSDI you received in the previous year in box 5. You use this number to calculate your combined income.

The form also shows any benefits that were withheld due to work earnings (box 3) or other reasons. If you had benefits withheld, box 5 still shows your total benefits before withholding—that is the number you use for the tax calculation.

You do not attach the Form SSA-1099 to your tax return. You keep it for your records. The IRS receives a copy directly from the SSA.

If you do not receive the form by mid-February, contact the SSA at 1-800-772-1213 or create an account on ssa.gov to view your form online. You can also request a replacement copy by mail.

When you must file a return even if you have no other income

If SSDI is your only income and your combined income is below the threshold, you do not have to file a federal income tax return. The IRS does not require it.

However, you may want to file anyway if you are due a refund—for example, if you had taxes withheld from other income during the year, or if you are due the Earned Income Tax Credit or Child Tax Credit. Filing a return is free if you use the IRS Free File program (irs.gov/freefile) or a community tax clinic.

Some states require a return even when the federal government does not. Check your state tax authority's website to see whether you must file in your state.

State income tax and SSDI

Federal tax rules do not explore to state taxes. Each state sets its own rules about whether SSDI is taxable.

Most states do not tax SSDI at all. However, some states tax it under the same rules as the federal government, and a few tax it differently. Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, and Vermont tax SSDI in some form. The rules vary by state—some use the federal threshold, some use a different threshold, and some tax SSDI only if your income exceeds a certain level.

Contact your state tax authority or visit its website to learn the rule in your state. If your state taxes SSDI, you will report it on your state return using a similar worksheet to the federal one.

SSDI and the Medicare premium surcharge

Your combined income also affects your Medicare premiums if you are on Medicare. The IRS uses the same combined income calculation to determine whether you pay a higher premium for Part B (medical insurance) and Part D (prescription drug coverage).

If your combined income exceeds $97,000 (single) or $194,000 (married filing jointly) in 2024, you pay an Income-Related Monthly Adjustment Amount (IRMAA) on top of your regular premium. The surcharge increases as your income rises. This is separate from income tax, but it uses the same calculation, so understanding combined income helps you understand both.

The SSA sends you a notice if your income triggers an IRMAA. You can appeal if your income dropped due to a life event (job loss, divorce, death of a spouse).

Frequently Asked Questions

Do I have to report SSDI if I work part-time?

Only if your combined income exceeds the threshold. Add your wages, half your SSDI, and any tax-exempt interest. If the total is over $25,000 (single) or $32,000 (married), then yes, some SSDI is taxable. If you are below the threshold, you do not report SSDI even though you work.

What if I have investment income or a pension?

Investment income and pensions count toward your adjusted gross income in the combined income calculation. They increase the likelihood that you will owe tax on SSDI. Use the same formula: AGI + tax-exempt interest + half SSDI. If the total exceeds the threshold, use the IRS worksheet.

Can I reduce my taxable SSDI by deducting expenses?

No. The combined income calculation uses your adjusted gross income, which already accounts for certain deductions (like educator expenses or student loan interest). You cannot deduct work expenses or other costs to lower the amount of SSDI that is taxable.

What happens if I owe tax on SSDI but cannot pay?

You can set up a payment plan with the IRS, request an extension to file, or ask for an installment agreement. Contact the IRS at 1-800-829-1040 or visit irs.gov. Do not ignore the bill—penalties and interest accrue if you do not pay or file.

Does reporting SSDI on my taxes affect my benefits?

No. Reporting SSDI on your tax return does not change the amount you receive or your may be able to access. The tax is separate from the benefit. However, earning work income above certain limits can reduce your benefits if you are under full retirement age—that is a different rule.