Whether you owe tax on SSDI depends on your total income, not just the benefit amount

The Internal Revenue Service taxes SSDI the same way it taxes Social Security retirement benefits: only if your combined income exceeds certain thresholds. Combined income means your adjusted gross income plus nontaxable interest plus half your SSDI benefit. If you have little or no other income, you typically owe no federal tax on SSDI. If you have wages, self-employment income, pensions, or investment returns, those push you over the threshold and trigger tax on a portion of your benefit.

The thresholds are $25,000 for single filers and $32,000 for married couples filing jointly. These numbers have not changed since 1984 and do not adjust for inflation, which means more beneficiaries cross them each year. If your combined income falls below your threshold, you owe no tax on SSDI. If it exceeds the threshold, you may owe tax on up to 50 percent of the excess, or up to 85 percent of your benefit in some cases.

Key Takeaways

  • SSDI is taxed only if your combined income (wages, pensions, investments, plus half your SSDI) exceeds $25,000 single or $32,000 married filing jointly.
  • If you are below the threshold, you owe no federal tax on SSDI, even if you receive a large benefit.
  • If you exceed the threshold, the IRS taxes up to 50 percent of the excess over the threshold, or up to 85 percent of your benefit if your income is very high.
  • You must report SSDI on your tax return even if none of it is taxable, because the IRS uses that information to calculate the taxable portion.
  • Some states also tax SSDI, though most do not; check your state's rules if you live in Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, or Vermont.

How the IRS calculates combined income

Combined income is not the same as adjusted gross income. Start with your adjusted gross income (the number at the bottom of page 1 of Form 1040). Add any nontaxable interest you received—usually from municipal bonds or certain savings bonds. Then add half of your SSDI benefit for the year. That total is your combined income.

Example: You are single, earned $18,000 in wages, received $12,000 in SSDI, and had $500 in nontaxable interest. Your combined income is $18,000 + $500 + ($12,000 × 0.5) = $24,500. Since $24,500 is below the $25,000 threshold, you owe no tax on SSDI.

Another example: You are single, earned $20,000 in wages, received $12,000 in SSDI, and had no nontaxable interest. Your combined income is $20,000 + $0 + $6,000 = $26,000. You exceed the threshold by $1,000. The IRS taxes 50 percent of that excess: $500 of your SSDI is taxable.

The two-tier tax formula and when 85 percent of benefits become taxable

The IRS uses a two-tier system. The first tier applies to the amount your combined income exceeds the threshold, up to $9,000 (single) or $12,000 (married filing jointly). The second tier applies to any combined income above those amounts.

In the first tier, up to 50 percent of the excess is taxable. In the second tier, up to 85 percent of the excess is taxable. Most beneficiaries stay in the first tier. You enter the second tier only if your combined income is very high—typically above $34,000 (single) or $44,000 (married filing jointly).

Example: You are single with combined income of $40,000. Your SSDI benefit is $15,000. You exceed the threshold by $15,000. The first $9,000 of excess is taxed at 50 percent: $4,500 taxable. The remaining $6,000 of excess is taxed at 85 percent: $5,100 taxable. Total taxable SSDI: $9,600. But the IRS also caps taxable SSDI at 85 percent of your benefit ($12,750), so you would owe tax on $9,600.

Reporting SSDI on your tax return

You report SSDI on Form 1040 using the worksheet in the instructions or using tax software. The Social Security Administration sends you a Form SSA-1099 in January showing the total SSDI you received in the prior year. You use that number to fill in the SSDI line on your return.

Even if none of your SSDI is taxable, you must report it. The IRS cross-checks the SSA-1099 against your return, and omitting SSDI can trigger an audit notice. If you use tax software or a tax preparer, give them the SSA-1099 and tell them you received SSDI; they will calculate the taxable portion automatically.

If you are married filing jointly, both spouses' SSDI goes on the same return, and the combined income threshold applies to the household total, not to each person separately.

State income tax on SSDI

Most states do not tax SSDI. However, Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, and Vermont do tax it under their own rules, which often differ from federal rules. Some of these states use the same federal thresholds; others have lower or higher thresholds or tax SSDI differently.

If you live in one of these states, contact your state tax authority or check the state's website to learn how SSDI is taxed. You may owe state tax on SSDI even if you owe no federal tax, or vice versa. State tax rules change, so verify the current rules for your state before filing.

How SSDI taxation interacts with work incentives and Medicare

If you are working while receiving SSDI, your wages count toward combined income and may trigger tax on your benefit. However, the Social Security Administration offers work incentives that can reduce or eliminate your SSDI payment while you work, which may lower your combined income and reduce or eliminate tax on SSDI. The most common work incentive is the Plan to Achieve Self-Support (PASS), which lets you set aside income and resources for work goals without affecting your SSDI payment.

SSDI taxation does not affect your Medicare coverage. You become may be able to access for Medicare after receiving SSDI for 24 months, regardless of whether any of your benefit is taxable. Owing tax on SSDI does not change your Medicare premiums or coverage.

What to do if you owe tax on SSDI

If your tax return shows you owe tax on SSDI, you can pay it when you file, or you can request that the Social Security Administration withhold federal income tax from your SSDI payment. To request withholding, complete Form W-4V and send it to your local Social Security office or submit it online through your my Social Security account.

Withholding is optional but can help you avoid a large tax bill at filing time. The amount you withhold is deducted from your SSDI payment each month. You can change or stop withholding at any time by submitting a new Form W-4V.

If you did not withhold and owe tax, you can pay the full amount with your return, set up a payment plan with the IRS, or request an extension to file. The IRS does not forgive tax owed on SSDI, but it does offer payment options if you cannot pay in full.

Frequently Asked Questions

Do I have to report SSDI if I did not work and have no other income?

Yes, you must report SSDI on your tax return even if it is the only income you received and none of it is taxable. The IRS requires this so it can verify the amount against the Form SSA-1099 the Social Security Administration sends. Omitting SSDI can trigger an audit notice.

Can I reduce my combined income to avoid tax on SSDI?

Not directly, but if you are working, you may be able to use a work incentive like a Plan to Achieve Self-Support (PASS) to set aside income for work goals. This can reduce your SSDI payment, which lowers your combined income and may reduce tax on the benefit. Talk to a work incentive planning specialist at your local Ticket to Work program.

What if I received SSDI for only part of the year?

You report only the SSDI you actually received. The Form SSA-1099 shows the total for the year. If you started or stopped SSDI mid-year, the amount on the form reflects that. Use the actual amount shown on the SSA-1099 when you file.

Does owing tax on SSDI affect my benefit amount next year?

No. Owing federal income tax on SSDI does not change your benefit payment. Your SSDI amount is based on your work history and disability status, not on whether you owe tax. Tax is calculated separately at filing time.

What if I think the Social Security Administration made an error on my SSA-1099?

Contact your local Social Security office or call 1-800-772-1213 to report the error. The SSA will investigate and issue a corrected SSA-1099 if needed. Do not file your tax return until you have the correct form, or file an amended return once you receive the correction.