Whether your SSDI is taxed depends on your total income, not just the disability payment itself

Social Security Disability Insurance (SSDI) may or may not be subject to federal income tax. The answer hinges on your combined income—a calculation that includes your SSDI, wages, interest, dividends, and certain other sources. If your combined income falls below a threshold set by the IRS, you owe no federal tax on your SSDI. If it exceeds that threshold, between 50% and 85% of your SSDI becomes taxable, depending on how far over you go.

The IRS calls this calculation your "provisional income" or "combined income," and it works differently than the tax rules for earned wages. You cannot simply look at your SSDI amount and know whether it is taxable—you have to add it to everything else you received that year.

Key Takeaways

  • SSDI becomes taxable only if your combined income (SSDI plus other income) exceeds $25,000 for a single filer or $32,000 for married filing jointly.
  • Combined income includes wages, self-employment income, interest, dividends, and certain retirement distributions, but not Supplemental Security Income (SSI).
  • If you are over the threshold, the IRS taxes between 50% and 85% of your SSDI, not the full amount.
  • Social Security sends you a Form SSA-1099 each January showing how much SSDI you received; you use this to calculate whether any is taxable on your federal return.
  • State tax treatment of SSDI varies—some states tax it, others do not, regardless of federal rules.

How the IRS calculates whether your SSDI is taxable

The IRS uses a two-step formula. First, you add up your combined income: your SSDI amount plus all wages, self-employment income, interest, dividends, capital gains, and distributions from retirement accounts (with some exceptions). You do not include Supplemental Security Income (SSI), which is never taxable.

Next, you compare your combined income to the IRS thresholds. For 2024, the thresholds are $25,000 for single filers and $32,000 for married couples filing jointly. (These thresholds have not changed since 1984 and do not adjust for inflation.) If your combined income is at or below the threshold, none of your SSDI is taxable. If it exceeds the threshold, you move to the second calculation.

When you are over the threshold, the IRS taxes the lesser of two amounts: either 50% of the excess over the threshold, or 50% of your SSDI—whichever is smaller. If your combined income is very high, an additional 35% of SSDI above a second threshold ($34,500 for single filers, $44,000 for married filing jointly in 2024) may also be taxable. This means up to 85% of your SSDI can be taxed, but only if your total income is substantially above the thresholds.

What counts as income for this calculation

Combined income includes almost all money you received during the year, with specific exceptions. Wages from employment, self-employment income, interest from savings accounts and bonds, stock dividends, capital gains from selling property, and distributions from IRAs, 401(k)s, and pensions all count. Tax-exempt interest (such as from municipal bonds) also counts toward the threshold, even though it is not taxable income itself.

Certain items do not count. Supplemental Security Income (SSI) is excluded entirely. Veterans' benefits, workers' compensation, and some other government payments are also excluded. Gifts and inheritances do not count. However, if you withdraw money from a retirement account, the full withdrawal amount counts as income, not just the taxable portion.

If you are married filing jointly, you combine your income with your spouse's income for the threshold calculation, even if your spouse does not receive SSDI. This can push a couple over the threshold when either person alone would not be.

How to report SSDI on your federal tax return

In January of each year, Social Security mails you a Form SSA-1099 showing the total SSDI you received in the previous year. You use this form to report your SSDI on your federal tax return. If you file Form 1040, you enter your SSDI on line 5b (or the equivalent line in the current year's form). The IRS instructions for Form 1040 include a worksheet to calculate how much of your SSDI, if any, is taxable.

If you use tax software or work with a tax preparer, you enter the SSDI amount from your SSA-1099, and the software or preparer calculates the taxable portion using the IRS worksheet. You do not calculate it yourself unless you are filing by hand. If you owe tax on your SSDI, you report the taxable amount on your return like any other income.

If you did not receive an SSA-1099 but you know you received SSDI, contact Social Security to request a replacement. Do not estimate the amount—use the official form.

State tax treatment of SSDI varies widely

Federal tax rules do not apply to state income tax. Some states tax SSDI the same way the IRS does; others tax it differently; and still others do not tax it at all. You need to check your state's rules separately.

States that do not tax SSDI include Alaska, Florida, Illinois, Mississippi, Nevada, South Dakota, Tennessee, Texas, Washington, and Wyoming (which have no state income tax or do not tax SSDI specifically). States that tax SSDI using federal rules or their own thresholds include Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, and Vermont. Other states have their own rules that may be more or less generous than federal thresholds.

Contact your state tax authority or check your state's tax return instructions to learn how your state treats SSDI. If you live in a state that taxes SSDI and you owe state tax, you report it on your state return using similar calculations to the federal worksheet.

What happens if you do not report taxable SSDI

If you owe federal tax on your SSDI and do not report it, the IRS can assess penalties and interest on the unpaid tax. Social Security does not withhold federal income tax from SSDI payments automatically, so if you owe tax, you are responsible for paying it when you file your return or making quarterly estimated tax payments if you expect to owe a large amount.

If you are unsure whether you owe tax, the IRS worksheet in the Form 1040 instructions will tell you. Many people with SSDI do not owe tax because their combined income stays below the threshold. If you are close to the threshold, even a small amount of other income—such as interest from a savings account—can push you over and make some SSDI taxable.

If you have not filed returns for years in which you received SSDI and may have owed tax, you can file amended returns. The IRS generally looks back three years for refunds, but you can file older returns to resolve unpaid tax liability.

Frequently Asked Questions

Does my spouse's income count toward the SSDI tax threshold if we file jointly?

Yes. When you file a joint return, the IRS combines your income and your spouse's income to determine whether either of you has taxable SSDI. If your spouse has wages or other income, it counts toward the threshold even if your spouse does not receive SSDI. This can result in your SSDI becoming taxable when it would not be if you filed separately.

If I receive both SSDI and SSI, is the SSI counted as income for the SSDI tax calculation?

No. Supplemental Security Income (SSI) is never counted as income for the purpose of calculating whether your SSDI is taxable. Only your SSDI amount, plus wages, interest, dividends, and other sources, count toward the threshold.

Can I reduce my SSDI tax by withdrawing less from my retirement account?

Yes, in some cases. Since retirement account withdrawals count as income for the SSDI tax calculation, taking smaller withdrawals or delaying withdrawals can keep your combined income below the threshold. However, you may face penalties for not taking required minimum distributions from certain accounts after age 73, so consult a tax professional before changing your withdrawal strategy.

What if Social Security made an error on my SSA-1099?

Contact Social Security directly to report the error. You can call 1-800-772-1213 or visit your local Social Security office. Social Security will investigate and issue a corrected SSA-1099 if needed. Once you receive the corrected form, you can file an amended federal tax return if your tax liability changed.

Do I have to file a federal tax return if my only income is SSDI below the threshold?

No, if your SSDI is your only income and it is below the threshold, you generally do not have to file a federal return. However, if you have other income (wages, interest, self-employment income) that exceeds the filing threshold for your age and filing status, you must file even if your SSDI is not taxable.