The Tax Treatment of SSDI Depends on Your Other Income
Social Security Disability Insurance (SSDI) is partially taxable if you have other income. You do not pay tax on the full amount you receive. Instead, the IRS counts a portion of your benefits as taxable income only if your "combined income" exceeds a threshold. Combined income is the sum of your adjusted gross income, nontaxable interest, and half of your SSDI benefits.
The threshold is $25,000 for a single filer and $32,000 for married filing jointly. If your combined income stays below that line, you owe no federal tax on your benefits. If it exceeds the threshold, up to 85 percent of the excess amount becomes taxable—but never more than 85 percent of your total SSDI for the year.
This rule applies only to federal income tax. SSDI is not subject to Social Security tax (the 6.2 percent payroll tax) or Medicare tax (the 1.45 percent payroll tax), even if you work while receiving benefits.
Key Takeaways
- SSDI becomes taxable only if your combined income (adjusted gross income plus half your benefits) exceeds $25,000 single or $32,000 married filing jointly.
- If you cross the threshold, up to 85 percent of the excess becomes taxable income on your federal return.
- Work income, pensions, interest, dividends, and capital gains all count toward the combined income threshold; SSDI itself does not.
- You will not owe Social Security or Medicare tax on SSDI, even if you earn wages from work.
- Some states do not tax SSDI at all, while others follow federal rules; check your state's rules before filing.
What Counts as Income for the Tax Calculation
The IRS uses a specific definition of "combined income" to determine whether your SSDI is taxable. It includes your adjusted gross income (wages, self-employment income, taxable pensions, taxable interest, taxable dividends, capital gains, and other taxable income reported on your return) plus any nontaxable interest (such as interest from municipal bonds) plus half of your SSDI benefits for the year.
Work income is the most common reason SSDI becomes taxable. If you earn $20,000 in wages and receive $15,000 in SSDI, your combined income is $20,000 + $7,500 (half of $15,000) = $27,500. That exceeds the $25,000 threshold by $2,500. You would owe tax on up to 85 percent of that $2,500 excess, or $2,125.
Retirement account withdrawals, pension income, and investment income also count. Nontaxable sources—such as Supplemental Security Income (SSI), workers' compensation, or gifts—do not count toward the threshold.
How Much of Your Benefits Becomes Taxable
The IRS uses a two-tier system. The first tier applies if your combined income exceeds the base threshold ($25,000 or $32,000). You pay tax on the lesser of (a) 50 percent of the excess over the threshold, or (b) 50 percent of your SSDI benefits.
The second tier applies if your combined income exceeds the base threshold by more than $9,000 (for single filers) or $12,000 (for married filers). In that case, you also pay tax on up to 85 percent of the additional excess. The total taxable amount cannot exceed 85 percent of your total SSDI for the year.
This sounds complex, but the IRS worksheet on Form 1040 instructions walks through it step by step. Many tax software packages calculate it automatically if you enter your SSDI amount and other income correctly.
State Income Tax and SSDI
Federal rules do not bind the states. Some states do not tax SSDI at all, regardless of your income level. Others follow the federal formula exactly. A few states have their own thresholds or rules.
States that do not tax SSDI include Colorado, Illinois, Kansas, Louisiana, Mississippi, Missouri, Montana, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, South Carolina, Tennessee, Texas, Washington, West Virginia, and Wyoming. If you live in one of these states, you will not owe state income tax on your benefits even if they are taxable at the federal level.
If you live in a state that does tax SSDI, check your state's tax agency website or ask a tax professional about the rules. Some states use the federal combined income threshold; others do not. A few states tax SSDI only if your income exceeds a higher threshold.
Reporting SSDI on Your Tax Return
The Social Security Administration sends you a Form SSA-1099-SM (or Form SSA-1099 for non-Medicare beneficiaries) by January 31 each year. This form shows the total SSDI you received in the previous year. You will need this amount to complete your federal return.
You report SSDI on Form 1040 (the main federal income tax form). The instructions include a worksheet to calculate how much of your benefits are taxable. You enter the taxable portion on the appropriate line of your return, usually combined with any other Social Security benefits you receive.
If you do not receive a Form SSA-1099-SM, contact the Social Security Administration at 1-800-772-1213 or visit ssa.gov. Do not estimate the amount; use the official figure from your form.
How Work Affects Your Tax Liability While on SSDI
SSDI has a work incentive program that allows you to earn money without losing your benefits when ready. However, work income still counts toward the combined income threshold for tax purposes. Earning wages while on SSDI may push you into a tax bracket where some of your benefits become taxable.
The work incentive rules and the tax rules are separate. You might keep your full SSDI payment under the work incentive rules but still owe tax on part of it because your combined income is high. Conversely, your benefits might be reduced or suspended under the work incentive rules, but if your other income is low, none of your remaining benefits would be taxable.
If you are working and on SSDI, keep records of your earnings and ask your tax preparer to calculate both your work incentive status and your tax liability. The two do not always move together.
Estimated Tax Payments and SSDI
If a large portion of your SSDI becomes taxable and you do not have taxes withheld from other income, you may need to make estimated tax payments to the IRS quarterly. Estimated payments are due on April 15, June 15, September 15, and January 15.
You can avoid estimated payments by asking Social Security to withhold federal income tax directly from your SSDI payment. You do this by completing Form W-4V and submitting it to your local Social Security office. You can choose to withhold 7, 10, 12, or 22 percent of your monthly benefit. This is often simpler than calculating and sending quarterly payments yourself.
If you are unsure whether you need to make estimated payments, use the IRS Estimated Tax Worksheet (Form 1040-ES) or consult a tax professional.
Frequently Asked Questions
Will I owe taxes on my SSDI if I have no other income?
No. If SSDI is your only income, your combined income will be half your SSDI amount, which will be below the $25,000 threshold. You will owe no federal income tax on your benefits. However, if you live in a state that taxes SSDI, check your state's rules.
What if I receive both SSDI and SSI?
Only SSDI is subject to federal income tax. Supplemental Security Income (SSI) is never taxable, and it does not count toward the combined income threshold. If you receive both, report only the SSDI amount on your tax return.
Can I reduce my taxable SSDI by withholding taxes from my payment?
Withholding taxes does not reduce the amount of SSDI that is taxable—it only reduces the amount you owe when you file. The IRS still counts your full SSDI benefit toward combined income. Withholding is a way to pay the tax you owe throughout the year instead of in a lump sum at tax time.
What happens if I do not report my SSDI on my tax return?
The IRS receives a copy of your Form SSA-1099-SM and will expect you to report it. If you do not, the IRS may send you a notice of underreported income and assess penalties and interest. Always report the amount shown on your SSA-1099-SM, even if you believe none of it is taxable.
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 filing threshold, you are not required to file. However, if you have other income or if taxes were withheld from your SSDI, filing may allow you to recover a refund.