Report SSDI on your tax return only if you owe federal income tax on it

Whether you report Social Security Disability Insurance (SSDI) on your federal tax return depends on your total income for the year. If your SSDI is your only income and you are below the threshold for your filing status, you do not have to file a return at all. If you have other income—wages, interest, pensions—you may owe tax on part of your SSDI, and you must report it on Form 1040.

The Social Security Administration (SSA) sends you a Form SSA-1099-SM each January showing how much SSDI you received in the prior year. This form is not the same as a W-2 or 1099 from an employer. You use it to calculate whether any of your benefits are taxable, then report that amount on your return. The IRS does not automatically know your SSDI amount unless you tell them.

The threshold for owing tax on SSDI is low if you have other income. If you are single and your combined income (wages plus half your SSDI plus tax-exempt interest) exceeds $25,000, some of your SSDI becomes taxable. For married couples filing jointly, the threshold is $32,000. These thresholds have not changed since 1984 and do not adjust for inflation.

Key Takeaways

  • You receive Form SSA-1099-SM in January showing your prior-year SSDI; this is the document you use to report SSDI on your tax return.
  • If SSDI is your only income and falls below $14,600 (single) or $29,200 (married filing jointly), you do not have to file a federal return.
  • If you have wages, pensions, or other income, you must calculate combined income and may owe tax on up to 85 percent of your SSDI.
  • You report taxable SSDI on Form 1040, line 5b; the IRS worksheet in the Form 1040 instructions walks you through the calculation.
  • If you underpay tax on SSDI during the year, you may owe a penalty; consider making estimated tax payments if you have other income.

When you must file a return even if SSDI is your only income

If SSDI is your sole source of income, the IRS filing threshold is higher than the SSDI amount itself. For 2024, a single person with only SSDI does not have to file unless their gross income exceeds $14,600. For married couples filing jointly, the threshold is $29,200. These thresholds change each year, so check the current year's Form 1040 instructions before deciding not to file.

However, you may want to file even if you are not required to. If you had federal income tax withheld from your SSDI (which is rare but possible if you requested it), filing a return is the only way to get a refund. If you receive other benefits that depend on your tax filing status—such as the Earned Income Tax Credit or a state tax credit—filing may increase your total refund.

How to calculate taxable SSDI when you have other income

The calculation has two steps. First, add your wages, self-employment income, pensions, interest, dividends, and half of your SSDI. This is your combined income. Do not include tax-exempt interest from municipal bonds, but do include it in the combined income calculation for SSDI tax purposes—this is a quirk of the rule that catches many people.

Second, compare your combined income to the thresholds. If you are single and combined income is between $25,000 and $34,000, up to 50 percent of your SSDI is taxable. If combined income exceeds $34,000, up to 85 percent is taxable. For married couples filing jointly, the thresholds are $32,000 and $44,000. The IRS provides a worksheet in the Form 1040 instructions that walks through this calculation step by step.

The calculation is not intuitive, and the worksheet is dense. If you have wages and SSDI both, or a pension and SSDI, or any combination of income sources, use the worksheet or work with a tax preparer. A mistake here can result in underpayment penalties.

Where to report taxable SSDI on Form 1040

On Form 1040, line 5b asks for taxable Social Security benefits. This is where you enter the amount you calculated using the IRS worksheet. Line 5a asks for the total SSDI you received (from Form SSA-1099-SM); line 5b is the taxable portion. If you calculated that none of your SSDI is taxable, enter zero on line 5b.

Do not report SSDI on any other line. Some people mistakenly put it on line 1 (wages) or line 7 (other income), which triggers IRS notices. The form is designed to separate SSDI from other income because the tax rules are different.

If you use tax software, the program will ask you for the total SSDI from Form SSA-1099-SM and will run the calculation for you. If you file by hand, print the worksheet from the Form 1040 instructions and keep it with your return records in case the IRS asks questions later.

What happens if you do not report SSDI on your return

The SSA reports your SSDI to the IRS on Form SSA-1099-SM. If you file a tax return and do not report the taxable portion of your SSDI, the IRS will eventually notice the discrepancy. You will receive a notice asking you to explain or pay the tax owed, plus interest and penalties.

The penalty for underpayment of tax is usually 0.5 percent per month of the unpaid amount, up to 25 percent total. Interest accrues daily at a rate set quarterly by the IRS (currently around 8 percent annually). If the IRS determines you owed tax and did not pay it, the debt does not go away—it can be collected from future refunds, and in rare cases, from your SSDI itself through offset.

If you made an honest mistake, you can file an amended return (Form 1040-X) to correct it. The IRS will reduce or waive penalties if you can show reasonable cause for the error, such as a disability that prevented you from understanding the rules or reliance on incorrect information from a tax preparer.

Estimated tax payments if you have other income

If you have wages from part-time work or self-employment income in addition to SSDI, your employer may not withhold enough federal tax to cover the tax on your SSDI. In that case, you may owe tax when you file your return. To avoid a large bill and a penalty, you can make estimated tax payments four times a year.

Estimated payments are due April 15, June 15, September 15, and January 15. You calculate the amount using Form 1040-ES, which asks you to estimate your income for the year and calculates the quarterly payment. If you underpay estimated tax, you may owe a penalty even if you pay the full amount by April 15 of the following year.

Many people with SSDI and part-time wages do not make estimated payments and instead file a return in April showing they owe tax. This is legal, but it means you owe the full amount at once and may owe a penalty. If you expect to owe more than $1,000, estimated payments are usually cheaper than the penalty.

State income tax and SSDI

Most states do not tax SSDI at all, regardless of your other income. However, a few states—including Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, and Vermont—tax SSDI the same way the federal government does. If you live in one of these states, you must report taxable SSDI on your state return as well.

State thresholds and tax rates vary. Some states use the same federal thresholds; others have their own. Check your state's tax instructions or contact your state revenue department to find out whether SSDI is taxable in your state and what the rules are.

Frequently Asked Questions

Do I have to file a tax return if I only receive SSDI?

No, not unless your SSDI exceeds the filing threshold for your status (currently $14,600 for single filers, $29,200 for married filing jointly). However, if you had federal tax withheld from your SSDI or you may have access to for a refundable tax credit, filing may get you money back.

What is Form SSA-1099-SM and when do I get it?

Form SSA-1099-SM is the statement the Social Security Administration sends you in January showing how much SSDI you received in the prior calendar year. You use this amount to calculate whether any of your benefits are taxable. Keep it with your tax records.

Can I deduct medical expenses or disability-related costs from my SSDI?

No. SSDI is not earned income, so you cannot reduce it with deductions. You can deduct medical expenses on Schedule A if you itemize deductions and they exceed 7.5 percent of your adjusted gross income, but this is separate from SSDI reporting.

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

Contact the Social Security Administration directly. You can call 1-800-772-1213 or visit your local Social Security office with your payment records. If SSA made an error, they will issue a corrected form. Do not file your tax return until you have the correct amount.

Will reporting SSDI on my tax return 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 you owe is separate from your benefit amount. However, if you have earned income from work, that can affect your benefits under the Substantial Gainful Activity rules.