How SSDI Benefits Are Taxed and What You Owe

When You Have to Pay Tax on SSDI

You may owe federal income tax on your SSDI benefits if your combined income exceeds a certain threshold. Combined income is not just your SSDI payment—it includes wages, self-employment income, interest, dividends, and half of your SSDI benefits added together. The threshold depends on your filing status and whether you are married.

For a single filer in 2024, if your combined income is between $25,000 and $34,000, you may owe tax on up to 50 percent of your benefits. If your combined income exceeds $34,000, you may owe tax on up to 85 percent of your benefits. For married filers filing jointly, the thresholds are $32,000 and $44,000. These thresholds do not change year to year—they are fixed by law.

If your combined income is below the first threshold for your filing status, you owe no federal tax on your SSDI, even if you have other income. State income tax is separate: some states tax SSDI, others do not. You can check your state's rules through your state tax authority's website.

Key Takeaways

Combined income—not SSDI alone—determines whether you owe tax, and it includes half your SSDI benefits plus all other income.
Single filers with combined income over $25,000 may owe tax on SSDI; married joint filers with combined income over $32,000 may owe tax.
The Social Security Administration does not withhold federal income tax from SSDI payments automatically, so you may need to pay estimated tax or adjust withholding from other income.
State tax rules vary: some states do not tax SSDI at all, while others follow federal rules or have their own thresholds.
You report SSDI tax on Form 1040 and use the Social Security Worksheet to calculate the taxable portion.

How to Calculate Your Combined Income

Start with your total SSDI benefits for the year. The Social Security Administration sends you a Form SSA-1099-SM each January showing the exact amount you received. If you are married and file jointly, include your spouse's SSDI benefits too.

Next, add all other income: wages from work, self-employment income, interest from savings accounts or bonds, dividends, capital gains, rental income, and any other taxable income. Then add half of your total SSDI benefits to this sum. That total is your combined income.

For example: You received $18,000 in SSDI, earned $12,000 in wages, and had $500 in interest. Half your SSDI is $9,000. Your combined income is $12,000 + $500 + $9,000 = $21,500. Since $21,500 is below $25,000, you owe no federal tax on your SSDI.

If your combined income crosses a threshold, you do not automatically owe tax on all your benefits. You owe tax only on the amount calculated using the Social Security Worksheet, which is included in IRS Publication 915. A tax professional can walk you through this calculation if your situation is complex.

Withholding and Estimated Tax Payments

Social Security does not withhold federal income tax from SSDI payments. If you expect to owe tax, you have two options: request voluntary withholding from your SSDI check, or make estimated quarterly tax payments to the IRS.

To request withholding, complete Form W-4V and submit it to your local Social Security office or mail it to Social Security. You choose the amount withheld—$10, $20, $40, or the amount you specify. This is the simplest route if you have other income that is already being taxed, because you can adjust the withholding from that income instead.

If you do not have other income and expect to owe tax on SSDI alone, you can make estimated quarterly payments directly to the IRS using Form 1040-ES. Payments are due April 15, June 15, September 15, and January 15. Missing a payment can result in penalties and interest, so set a reminder or work with a tax preparer.

Reporting SSDI on Your Tax Return

You report SSDI benefits on Form 1040, the main federal income tax form. The amount you enter on line 5b is not your full SSDI benefit—it is the amount calculated using the Social Security Worksheet in IRS Publication 915. This worksheet accounts for your combined income and determines what portion of your benefits is taxable.

You will also receive Form SSA-1099-SM from Social Security by January 31 each year. This form shows your total SSDI benefits for the prior year. Attach a copy to your tax return when you file. If you did not receive the form, contact Social Security to request a replacement.

If you are married and file jointly, both you and your spouse report your own SSDI benefits separately on the form, but you use a combined worksheet to determine taxability. This is one reason married couples sometimes benefit from filing jointly rather than separately—the thresholds are higher.

State Income Tax on SSDI

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

Other states follow federal rules: if you owe federal tax on SSDI, you likely owe state tax too. A few states have their own thresholds or rules. Colorado, for example, excludes SSDI from state income entirely. Connecticut and Kansas have different thresholds than the federal government. Check your state's tax authority website or contact them directly to confirm your state's rules.

If you move to a different state during the year, you may owe tax to both states. Some states offer credits for taxes paid to another state, but the rules vary. A tax professional familiar with your state can advise you on multi-state filing.

What Happens If You Owe Back Taxes

If you did not pay tax on SSDI in prior years and now owe, you can file amended returns using Form 1040-X for each year within the statute of limitations. The IRS generally has three years to assess tax, but if you did not file at all, there is no time limit. Filing an amended return voluntarily before the IRS contacts you may reduce penalties.

If you cannot pay the full amount owed, the IRS offers payment plans. You can request a short-term plan (up to 180 days) at no cost, or a long-term installment agreement with a setup fee. You can set up a payment plan online through IRS.gov, by phone, or by mail. The IRS can also offset your SSDI benefits to collect back taxes, though this is rare and usually happens only after other collection efforts fail.

If you are facing a large tax bill, a tax professional or low-income taxpayer clinic can help you understand your options. Many clinics offer free or low-cost help to people with limited income.

Frequently Asked Questions

Do I have to file a tax return if I only have SSDI income?

Not necessarily. If your combined income is below the first threshold for your filing status, you have no tax liability and do not have to file. However, if you had taxes withheld from your SSDI or made estimated payments, you should file to get a refund.

Can I reduce my SSDI tax by working less?

Reducing work income does lower your combined income and may lower your tax liability on SSDI. However, if you are under full retirement age, earning above the annual earnings limit can reduce your SSDI payment itself. Work with a benefits planner to understand how work affects both your payment and your taxes.

What if I disagree with the amount on my SSA-1099-SM?

Contact Social Security to request a corrected form. You can call 1-800-772-1213 or visit your local office. If Social Security issued a corrected form, they will send you a corrected SSA-1099-SM. You then file an amended return with the corrected amount.

Does my spouse's SSDI affect my tax on my own benefits?

If you file jointly, your spouse's SSDI is included in your combined income calculation, which can push you into a higher tax bracket on your own benefits. Filing separately sometimes results in lower total tax, but the rules are complex. A tax professional can compare both scenarios for you.

What if I receive both SSDI and SSA retirement benefits?

Both are reported on Form 1040 and both count toward your combined income. You receive separate SSA-1099-SM forms for each benefit. Use the Social Security Worksheet to calculate the taxable portion of the combined total.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.