Whether you report SSDI on your tax return depends on your total income
Most people who receive Social Security Disability Insurance (SSDI) do not report it as income on their federal tax return. However, if you have other income—from work, investments, pensions, or other sources—a portion of your SSDI may become taxable. The IRS uses a formula based on your "combined income" to determine whether any of your SSDI is subject to tax.
The key is understanding what counts as income for this calculation and whether you cross the threshold that triggers taxation. If you do owe tax on SSDI, you report it on Form 1040 or Form 1040-SR, not on a separate SSDI-specific form.
Key Takeaways
- If SSDI is your only income, you typically owe no federal income tax on it and do not need to file a return.
- Combined income is calculated by adding your adjusted gross income, nontaxable interest, and half of your SSDI benefits—and this number determines whether any SSDI becomes taxable.
- If your combined income exceeds $25,000 (single) or $32,000 (married filing jointly), up to 50 percent or 85 percent of your SSDI may be taxable.
- You report taxable SSDI on line 5b of Form 1040 or Form 1040-SR, and the Social Security Administration sends you a Form SSA-1099 each January showing your annual benefits.
- If you have other income but are unsure whether SSDI is taxable in your situation, the IRS Pub. 915 worksheet walks you through the calculation step by step.
How the IRS calculates whether your SSDI is taxable
The IRS does not tax SSDI directly. Instead, it uses a two-step threshold system. First, you calculate your combined income: your adjusted gross income (AGI) plus any nontaxable interest plus half of your SSDI benefits for the year. This number determines whether any SSDI becomes taxable at all.
If your combined income is below $25,000 (or $32,000 if you are married filing jointly), none of your SSDI is taxable and you report nothing on your return related to SSDI. If your combined income exceeds these thresholds, you move to the second step: calculating how much of your SSDI is actually taxable using a worksheet provided by the IRS.
The taxable amount is the lesser of two calculations: either 50 percent of the amount by which your combined income exceeds the first threshold, or 85 percent of your total SSDI benefits. For most people, the 50 percent rule applies. Only if your combined income is very high (above $34,000 for single filers or $44,000 for married filers) does the 85 percent rule potentially come into play.
What counts as income for the combined income calculation
Combined income includes more than just wages. It includes W-2 wages from employment, self-employment income, interest and dividends, capital gains, rental income, pension payments, distributions from retirement accounts, and income from a spouse if you file jointly. It also includes nontaxable interest from municipal bonds—which is why someone with low wages but high bond interest can still have SSDI become taxable.
What does not count: Supplemental Security Income (SSI), veterans' benefits, workers' compensation, and certain other need-based benefits are excluded from the combined income calculation. If you receive both SSDI and SSI, only the SSDI portion is subject to this tax rule.
The most common scenario is someone who continues to work while receiving SSDI. Even part-time or modest earnings can push combined income over the threshold, making a portion of SSDI taxable. This is why people who return to work should review their tax situation each year.
Reporting taxable SSDI on your tax return
You report taxable SSDI on Form 1040 or Form 1040-SR (the version for people age 65 and older). The amount goes on line 5b, labeled "Social security benefits." You will also receive a Form SSA-1099 from the Social Security Administration by January 31 each year, showing your total SSDI benefits for the previous year. This form is for your records and to help you calculate the taxable portion.
You do not file a separate form or worksheet with the IRS. Instead, you use the IRS Pub. 915 worksheet (included in the instructions for Form 1040) to calculate the taxable amount yourself, then enter that amount on line 5b. If you use tax software or work with a tax preparer, they can run this calculation for you based on the information you provide.
If you owe tax on SSDI, you can pay it when you file your return, or you can request that the Social Security Administration withhold federal income tax directly from your SSDI payments. To set up withholding, you complete Form W-4V and submit it to your local Social Security office or online through your my Social Security account.
When you must file a return even if SSDI is your only income
If SSDI is your only income and you are under age 65, you generally do not need to file a federal income tax return. The standard deduction for 2024 is $14,600 for single filers, and SSDI does not count toward this threshold for most people.
However, you must file if you have other income—even small amounts. If you earned $500 in wages and received $15,000 in SSDI, you must file because your wages trigger the filing requirement. Additionally, if you are age 65 or older, the standard deduction is higher ($17,550 for single filers in 2024), but the same rule applies: file if you have income other than SSDI.
Even if you are not required to file, you may want to file anyway if you had taxes withheld from other income during the year, because you could receive a refund. Filing is also sometimes necessary to claim the Earned Income Tax Credit or other refundable credits.
Using IRS Publication 915 to work through the calculation
IRS Publication 915, "Social Security and Equivalent Railroad Retirement Benefits," contains a detailed worksheet that walks you through the combined income calculation and the taxable SSDI calculation. You can read it free from the IRS website or request a printed copy.
The worksheet asks you to list your adjusted gross income, nontaxable interest, half of your SSDI benefits, and any other income sources. It then guides you through comparing your combined income to the thresholds and calculating the taxable portion. For most people, this worksheet is straightforward and takes 10 to 15 minutes to complete.
If you have a complex situation—such as a spouse with separate income, rental property, or significant investment income—the worksheet can become more involved. In those cases, a tax preparer or the IRS Taxpayer information Centers (which offer free help) can walk you through it.
What happens if you do not report taxable SSDI
If you owe tax on SSDI and do not report it, the IRS may assess penalties and interest on the unpaid amount. Because the Social Security Administration reports your SSDI to the IRS on Form SSA-1099, the IRS knows how much you received. If your return does not account for taxable SSDI when your income situation requires it, the IRS will likely send you a notice.
If you made an honest mistake or did not realize SSDI could be taxable, you can file an amended return (Form 1040-X) for the past three years. This corrects the record and may reduce any penalties if you act promptly. If you are unsure whether you reported correctly in prior years, contacting a tax preparer or the IRS can help you determine whether an amended return is necessary.
Frequently Asked Questions
If I work part-time and receive SSDI, will my wages make SSDI taxable?
Possibly. Your wages count toward combined income. If your wages plus other income plus half your SSDI benefits exceed $25,000 (single) or $32,000 (married filing jointly), then yes, a portion of your SSDI becomes taxable. The exact amount depends on how much you earn and your other income sources.
Do I report SSDI on my state income tax return?
Most states do not tax SSDI benefits, but a few do. Check your state's tax rules or contact your state tax authority. Some states follow federal rules exactly, while others have their own thresholds or exclude SSDI entirely. Your state tax return is separate from your federal return.
What if I receive both SSDI and SSI?
Only SSDI is subject to federal income tax under this rule. SSI is not taxable. If you receive both, you calculate combined income using only the SSDI amount, and you report only the taxable SSDI portion on your federal return. The Form SSA-1099 you receive will show SSDI and SSI separately.
Can I have taxes withheld from my SSDI to avoid owing at tax time?
Yes. Complete Form W-4V and submit it to your local Social Security office or through your my Social Security account. You can request that 7, 10, 12, or 22 percent of your monthly SSDI payment be withheld for federal income tax. This reduces the amount you owe when you file.
What if my income changes during the year?
You calculate your combined income based on your actual income for the full tax year, not what you expected at the beginning. If you had a large one-time gain, inheritance, or job change, your combined income for that year may be higher than usual, making SSDI taxable when it was not in prior years. Review your situation each January as you prepare your return.