Social Security Disability Insurance (SSDI) and federal income tax

You may owe federal income tax on your SSDI benefits, but most people who receive only SSDI do not. The rule depends on whether you have other income—wages, interest, pensions, or self-employment earnings—and how much.

The Social Security Administration (SSA) uses a formula called "combined income" to determine if your benefits are taxable. Combined income is half your SSDI benefit plus all your other income. If your combined income exceeds a threshold—$25,000 for a single filer or $32,000 for married filing jointly—then up to 85 percent of your benefits may be subject to federal tax.

If SSDI is your only income and you have no other earnings, you almost certainly will not owe federal income tax on those benefits. The threshold is high enough that most SSDI recipients fall below it.

Key Takeaways

  • SSDI benefits are taxable only if your combined income (half your benefit plus other income) exceeds $25,000 for single filers or $32,000 for married couples filing jointly.
  • Most people receiving only SSDI do not pay federal income tax because their combined income stays below the threshold.
  • If you have wages, self-employment income, pensions, or investment income in addition to SSDI, you may owe tax on part of your benefits.
  • You can request that the SSA withhold federal income tax from your monthly SSDI payment to avoid owing a large amount at tax time.
  • State income tax rules vary—some states do not tax SSDI at all, while others follow federal rules or have their own thresholds.

How the combined income calculation works

The SSA calculates combined income by taking half of your annual SSDI benefit and adding it to all other income you received during the year. "Other income" includes W-2 wages, self-employment earnings, interest, dividends, rental income, pensions, and distributions from retirement accounts.

For example: if you receive $1,200 per month in SSDI ($14,400 per year) and earn $15,000 from part-time work, your combined income is $7,200 (half of $14,400) plus $15,000, which equals $22,200. Since $22,200 is below the $25,000 threshold for single filers, none of your SSDI is taxable.

If the same person earned $20,000 instead, combined income would be $27,200, which exceeds the threshold by $2,200. In that case, up to 85 percent of the excess amount could be taxable—but the actual tax owed depends on your total income and tax bracket, not just the excess.

When you might owe tax on SSDI

You are most likely to owe tax on SSDI if you have substantial income from work, a pension, or investment returns. A person who works part-time while receiving SSDI, or who receives both SSDI and a military or government pension, may cross the threshold.

Retirement account withdrawals also count as income. If you are over 59½ and withdraw from a traditional IRA or 401(k), that withdrawal is added to your combined income calculation, which could push you over the threshold and make your SSDI taxable.

Supplemental Security Income (SSI)—a different program for people with low income and few assets—is never taxable, even if you have other income. Only SSDI benefits are subject to this tax rule.

How to report SSDI on your tax return

The SSA sends you a Form SSA-1099 each January showing the total SSDI you received the previous year. You use this form to report your benefits on your federal tax return.

If you use tax software or work with a tax preparer, you enter the amount from the SSA-1099 in the benefits section. The software or preparer then calculates whether any of your benefits are taxable based on your combined income and your filing status.

You do not report SSDI on a W-2 form—only on the SSA-1099. If you also have wages from work, you will receive a W-2 for that income and report both documents on your return.

Withholding federal tax from your SSDI payment

If you know you will owe federal income tax on your SSDI, you can ask the SSA to withhold money from your monthly benefit. This works the same way as tax withholding from a paycheck—you pay a portion throughout the year rather than owing a large amount when you file your return.

To set up withholding, you complete Form W-4V (Voluntary Withholding Request) and submit it to your local Social Security office, by mail, or online through your my Social Security account. You can choose to have 7, 10, 15, or 25 percent of your monthly benefit withheld.

Withholding is optional but can help you avoid underpayment penalties if your tax liability is high. You can change or stop withholding at any time by submitting a new Form W-4V.

State income tax on SSDI

State income tax treatment of SSDI varies widely. Some states do not tax SSDI at all, regardless of your income level. Other states follow the federal combined income rule, and a few have different thresholds or rules of their own.

If you live in a state with income tax, check your state's tax agency website or contact them directly to learn whether SSDI is taxable in your state. The SSA does not withhold state income tax, so you may need to make estimated state tax payments or request withholding through a different process.

If you moved to a new state during the year, you may owe tax to both your old and new state, depending on when you moved and each state's rules. This is a situation where a tax preparer familiar with your state's rules can be especially helpful.

What happens if you do not report SSDI on your tax return

The SSA reports all SSDI payments to the Internal Revenue Service (IRS). If you owe tax on your benefits and do not report them, the IRS will eventually notice the discrepancy between what you reported and what the SSA reported.

Failing to report income can result in penalties, interest charges, and an IRS audit. If you are unsure whether you owe tax on your SSDI, it is safer to report the full amount on your return and let the tax software or a preparer calculate the actual tax owed. Reporting too much is not a problem; reporting too little can create serious issues.

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 for single filers), you have no tax filing requirement. However, if you had federal income tax withheld from your benefit, you may want to file a return to get a refund of that withholding.

If I work part-time and receive SSDI, will I owe tax?

It depends on how much you earn. If your combined income (half your SSDI plus your wages) exceeds $25,000 (or $32,000 if married filing jointly), some of your SSDI may be taxable. A tax preparer can calculate the exact amount based on your specific situation.

Can I deduct my medical expenses to lower my SSDI tax?

Medical expenses are deductible only if you itemize deductions on your tax return, and only the amount above 7.5 percent of your adjusted gross income. Most people with SSDI take the standard deduction instead, which is simpler. A tax preparer can tell you which approach saves you more.

What if I disagree with the amount of SSDI shown on my SSA-1099?

Contact the SSA directly at 1-800-772-1213 or visit your local Social Security office. The SSA can verify the amount you received and issue a corrected form if there is an error. Keep your own records of monthly payments to compare against the SSA-1099.

Do I have to pay self-employment tax on SSDI?

No. Self-employment tax applies only to income you earn from self-employment or a business, not to SSDI benefits. However, if you have self-employment income in addition to SSDI, that self-employment income is subject to self-employment tax and counts toward your combined income for SSDI tax purposes.