Whether You Pay Tax on SSDI Depends on Your Total Income

You may owe federal income tax on part of your SSDI benefits if your combined income exceeds a threshold set by the Internal Revenue Service. Combined income is not just your SSDI payment—it includes wages, interest, dividends, and other income, plus half of your SSDI benefits themselves. For 2024, if your combined income is over $25,000 (single filer) or $32,000 (married filing jointly), some of your benefits become taxable.

The amount you owe is not a flat percentage. The IRS uses a formula that can tax between 0 and 85 percent of your benefits, depending on how far your combined income exceeds the threshold. Most people with SSDI pay tax on 50 percent of their benefits, but higher earners may pay tax on up to 85 percent. If your combined income stays below the threshold, you owe nothing on your SSDI.

State income tax is separate. Some states do not tax SSDI at all; others tax it the same way the federal government does; a few tax it differently. You need to check your state's rules, because federal and state tax treatment do not always match.

Key Takeaways

  • Combined income—SSDI plus half your SSDI plus all other income—determines whether any of your benefits are taxable; thresholds are $25,000 for single filers and $32,000 for married filing jointly.
  • The taxable portion ranges from 0 to 85 percent of your benefits and is calculated using an IRS formula, not a flat rate.
  • You report SSDI on Form 1040 and use the IRS worksheet or Social Security's online calculator to determine the taxable amount.
  • State tax rules vary widely; some states do not tax SSDI, while others follow federal rules or have their own thresholds.
  • If you work while receiving SSDI, your wages count toward combined income and can push more of your benefits into taxable territory.

How the IRS Calculates the Taxable Portion

The IRS uses a two-tier system. In the first tier, you add up your combined income. If it exceeds $25,000 (single) or $32,000 (married filing jointly), the amount over the threshold is multiplied by 50 percent. That result is compared to $9,000 (single) or $12,000 (married filing jointly)—the second-tier threshold. Whichever is smaller becomes the taxable amount in tier one.

If your combined income is high enough that tier one does not capture all the tax, tier two kicks in. Any combined income over $34,000 (single) or $44,000 (married filing jointly) is multiplied by 85 percent. That result, minus the amount already taxed in tier one, is added to your taxable benefits. The total cannot exceed 85 percent of your benefits.

This sounds abstract because it is. The Social Security Administration publishes a worksheet in the instructions to Form 1040, and the IRS also offers an online calculator. You do not have to do this math by hand. Social Security sends you a Form SSA-1099 each January showing your benefits for the prior year; use that number plus your other income to run the calculation.

What Counts as Income for the Tax Calculation

Combined income includes wages, self-employment income, interest, dividends, capital gains, rental income, and income from pensions or annuities. It also includes half of your SSDI benefits—that half is added to your other income to determine whether you cross the threshold, even though you are not actually receiving that money.

Some income does not count. Supplemental Security Income (SSI) is not included. Neither are tax-exempt interest (such as interest from municipal bonds), workers' compensation, or certain veterans' benefits. If you are working and using a work incentive like the Student Earned Income Exclusion or Plan to Achieve Self-Support (PASS), those excluded earnings do not count toward combined income either.

If you are married and file jointly, you combine your income with your spouse's income for the calculation, even if your spouse does not receive SSDI. If your spouse receives SSDI, you add half of both spouses' benefits to the combined income total.

Reporting SSDI on Your Tax Return

You report SSDI on Form 1040, the main federal income tax return. Social Security sends you Form SSA-1099 in January, showing the total benefits you received in the prior year. You enter that amount on line 5b of Form 1040 (or the equivalent line if you use a different version). On line 5c, you enter the taxable portion—the amount you calculated using the IRS worksheet or calculator.

If you do not normally file a tax return because your income is too low, you may still need to file if part of your SSDI is taxable. The threshold for filing is lower than the threshold for owing tax, so check the IRS instructions for your filing status.

If you file electronically, tax software usually walks you through the combined income calculation and fills in the taxable amount automatically. If you file by paper, you must complete the worksheet yourself or use the IRS calculator and transfer the result to your return.

State Income Tax and SSDI

Fourteen states do not tax SSDI at all: Alabama, Arkansas, Florida, Georgia, Illinois, Indiana, Iowa, Kentucky, Louisiana, Mississippi, Missouri, North Carolina, Ohio, and Pennsylvania. If you live in one of these states, you owe no state income tax on your benefits, regardless of your income level.

Most other states follow the federal rule: if your combined income exceeds the federal threshold, your SSDI is taxable at the state level using the same formula. A few states have their own thresholds or formulas. Colorado, Connecticut, Kansas, and Missouri have higher income thresholds before SSDI becomes taxable. You must check your state's tax agency website or call to learn the exact rule for your state.

If you live in a state that taxes SSDI and you owe state tax, you report it on your state income tax return using the same taxable amount you calculated for federal purposes (unless your state has a different rule). Some states allow you to subtract SSDI from your taxable income even if the federal government taxes it, so the rules really do vary.

What Happens If You Work While Receiving SSDI

Wages you earn count as income for the tax calculation. If you are using a work incentive like the Student Earned Income Exclusion (which excludes the first $2,150 per month of student wages, adjusted annually) or PASS, those excluded wages do not count toward combined income. But regular wages do.

This means working can push more of your SSDI into taxable territory. If you earn $15,000 in wages and receive $12,000 in SSDI, your combined income is $15,000 plus $6,000 (half your SSDI) = $21,000. That is below the $25,000 threshold, so none of your SSDI is taxable. But if you earn $20,000, your combined income is $26,000, and you owe tax on part of your benefits.

Work incentives exist partly to reduce this tax burden. The Impairment Related Work Expenses (IRWE) deduction allows you to subtract certain disability-related work costs from your earnings before they count toward combined income. PASS lets you set aside income and resources for a work goal without it affecting your benefits or your tax calculation. Understanding these tools can reduce your tax liability while you work.

Withholding and Estimated Tax Payments

Social Security does not automatically withhold federal income tax from your SSDI payments. If you know you will owe tax, you can request voluntary withholding by completing Form W-4V and sending it to your local Social Security office. You can choose to have 7, 10, 12, or 22 percent of your monthly benefit withheld.

If you do not request withholding and you owe a large amount of tax, you may need to make estimated tax payments to the IRS during the year to avoid penalties. Estimated payments are due on April 15, June 15, September 15, and January 15. If your tax liability is small, the IRS usually does not penalize you, but it is safer to pay as you go if you can.

Requesting withholding is simpler than making quarterly payments and ensures the money comes out of your SSDI check rather than requiring you to send a check to the IRS. If you are unsure whether you will owe tax, you can request withholding and adjust it later if your circumstances change.

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 it is below the filing threshold for your age and filing status, you do not have to file. However, if part of your SSDI is taxable based on the combined income calculation, you must file to report and pay the tax owed. The IRS instructions for Form 1040 list the filing thresholds by age and status.

What if I receive both SSDI and SSI?

SSI does not count as income for the SSDI tax calculation. Only your SSDI benefits and your other income (wages, interest, etc.) are used to determine whether your SSDI is taxable. SSI remains separate and is never taxable.

Can I deduct SSDI on my tax return?

No. SSDI is not deductible. You report the taxable portion as income on Form 1040. You cannot reduce your taxable SSDI using the standard deduction or other deductions; the IRS formula determines the taxable amount, and that is what you report.

What if I disagree with the taxable amount Social Security calculated?

Social Security does not calculate the taxable amount—you do, using the IRS worksheet or calculator. If you believe the amount is wrong, recalculate using Form 1040 instructions or the IRS online tool. If you still disagree, contact the IRS directly. Social Security's Form SSA-1099 shows only the total benefits you received, not the taxable portion.

Does receiving SSDI affect my tax credits or deductions?

SSDI itself does not disqualify you from tax credits like the Earned Income Tax Credit (EITC) or the Child Tax Credit. However, your combined income (including half your SSDI) is used to determine whether you are within the income limits for these credits. High combined income can phase out credits you might otherwise receive.