The federal government takes taxes from SSDI only if your total income crosses a threshold

You do not automatically pay federal income tax on SSDI. The Social Security Administration withholds tax only when your combined income — SSDI plus other earnings, interest, pensions, or taxable benefits — exceeds a base amount set by law. For 2024, that base is $25,000 if you file single, $32,000 if you file married filing jointly, and $0 if you file married filing separately.

The threshold is called the combined income test. It counts half your SSDI benefit plus all your other income. If that sum exceeds the base, up to 50 percent of your SSDI becomes taxable. If your combined income exceeds a second, higher threshold ($34,000 single, $44,000 married filing jointly in 2024), up to 85 percent of your SSDI becomes taxable instead.

This means most SSDI recipients pay no federal tax at all. You only owe tax if you have other income — wages from work, self-employment, rental income, investment gains, or a pension — that pushes you over the line.

Key Takeaways

  • Federal tax on SSDI is triggered only when your combined income (half your SSDI plus all other income) exceeds $25,000 single or $32,000 married filing jointly.
  • If you cross the first threshold, up to 50 percent of your SSDI becomes taxable; if you cross the second threshold, up to 85 percent becomes taxable.
  • The thresholds have not changed since 1984, so inflation means more beneficiaries pay tax each year even if their real income stays flat.
  • You report SSDI on Form 1040 and use the Social Security Worksheet to calculate how much is taxable; the SSA sends Form SSA-1099 each January.

How the two tax thresholds work

The first threshold is $25,000 for single filers and $32,000 for married filing jointly (2024). To find your combined income, add half your SSDI benefit to all your other income — wages, self-employment, interest, dividends, pensions, rental income, and taxable Social Security retirement benefits. If the total is $25,000 or less, you owe no federal tax on SSDI.

If your combined income exceeds $25,000, the IRS taxes the smaller of two amounts: either 50 percent of the excess over $25,000, or 50 percent of your total SSDI for the year. For example, if you are single, receive $12,000 in SSDI, and earn $15,000 in wages, your combined income is $21,000 (half of $12,000 plus $15,000). You are under the threshold, so no SSDI is taxable.

The second threshold is $34,000 single and $44,000 married filing jointly. If your combined income exceeds this amount, up to 85 percent of your SSDI becomes taxable. The calculation is more complex: you add 85 percent of the excess over the second threshold to any amount already taxed under the first threshold. This second tier catches beneficiaries with substantial other income.

Why the thresholds have not changed since 1984

Congress set these dollar amounts in 1983 and has not adjusted them for inflation since. In 1984, when the rule took effect, $25,000 was a meaningful income level. Today, it is far lower in real terms. A single person earning $35,000 in wages and receiving $12,000 in SSDI has a combined income of $41,000 — well above both thresholds — even though $35,000 in 1984 dollars would be roughly $110,000 today.

This frozen threshold means more beneficiaries pay tax each year without any change in law. The number of SSDI recipients with taxable benefits has grown steadily. If you work part-time or have a pension, you are far more likely to owe tax than a beneficiary was 20 years ago, even if your real income has not risen.

What counts as income for the combined income test

The combined income test includes almost all income you receive. Wages from employment count. Self-employment income counts. Interest and dividends count. Taxable pensions and annuities count. Rental income counts. Taxable Social Security retirement benefits count. Even some distributions from retirement accounts count.

A few things do not count: Supplemental Security Income (SSI) does not count. Veterans benefits do not count. Gifts do not count. The return of your own principal from a savings account does not count. Nontaxable interest (such as interest from municipal bonds) does not count. Nontaxable portions of pensions do not count.

Work incentives under the Ticket to Work program can affect what counts. If you are using a work incentive such as the Student Earned Income Exclusion or the Plan to Achieve Self-Support (PASS), some of your earnings may be excluded from the combined income calculation. You must report the use of these incentives to Social Security and to the IRS.

How to report SSDI income on your tax return

The Social Security Administration sends you Form SSA-1099 by January 31 each year. This form shows the total SSDI you received in the prior year. You use this amount to fill out the Social Security Worksheet in the IRS instructions for Form 1040 (or Form 1040-SR if you are 65 or older).

The worksheet walks you through the combined income test step by step. You enter half your SSDI, add your other income, and compare the total to the thresholds. The worksheet then tells you how much of your SSDI is taxable. You report this taxable amount on Form 1040, line 5b (or the equivalent line for your form).

If you use tax software, the program usually includes the Social Security Worksheet and calculates the taxable amount for you. If you file by hand or with a tax preparer, make sure they have the worksheet and understand the two-threshold rule. Many tax preparers are unfamiliar with SSDI taxation and may make errors.

Whether Social Security withholds tax automatically

Social Security does not withhold federal income tax from SSDI payments automatically. Unlike wages, which employers withhold tax from, SSDI is paid in full each month. You are responsible for paying the tax you owe when you file your return, or for making estimated tax payments during the year if you expect to owe a large amount.

You can ask Social Security to withhold federal income tax from your SSDI if you want to. You do this by filing Form W-4V (Voluntary Withholding Request) with your local Social Security office or online at ssa.gov. You can request that 7, 10, 12, or 22 percent of your monthly benefit be withheld. Many beneficiaries use this option to avoid a large tax bill at filing time.

If you request withholding, Social Security will send you a new Form SSA-1099 showing the amount withheld. This withheld amount is credited against your tax liability when you file. Withholding does not change how much SSDI is taxable — it only changes when you pay the tax.

State and local taxes on SSDI

Most states do not tax SSDI. Thirty-nine states and the District of Columbia exempt SSDI from state income tax entirely. However, 11 states tax SSDI under their own rules, which may differ from the federal thresholds.

Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, and Vermont all tax SSDI to some degree. The rules vary widely. Some states use the same federal thresholds; others use lower thresholds or tax a different percentage of the benefit. A few states tax SSDI only if your total income exceeds a very high level. You must check your state's tax rules or consult a tax preparer familiar with your state.

Local income taxes (in cities or counties that impose them) generally follow state rules. If your state does not tax SSDI, your local tax usually does not either. If your state does tax SSDI, your local tax may as well.

Frequently Asked Questions

If I earn wages and receive SSDI, will all my SSDI be taxed?

No. Only the portion of SSDI that pushes your combined income over the threshold becomes taxable. If you earn $20,000 in wages and receive $12,000 in SSDI, your combined income is $26,000 (half of $12,000 plus $20,000). You are $1,000 over the $25,000 threshold, so only $500 of your SSDI is taxable — not all of it.

Does working part-time affect how much SSDI tax I owe?

Yes. Part-time wages count as income for the combined income test. Even modest earnings can push you over a threshold. If you earn $10,000 part-time and receive $12,000 in SSDI, your combined income is $16,000 — still under the first threshold. But if you earn $20,000, your combined income is $26,000, and some SSDI becomes taxable.

Can I reduce my SSDI tax by requesting withholding?

Withholding does not reduce the amount of tax you owe — it only changes when you pay it. If you request 10 percent withholding, Social Security deducts that from your monthly benefit and sends it to the IRS. You still owe the same total tax, but you pay it throughout the year instead of in a lump sum at filing time.

What if I disagree with the taxable amount shown on Form SSA-1099?

Form SSA-1099 shows only the SSDI you received; it does not calculate the taxable amount. The IRS calculates that using the Social Security Worksheet on your tax return. If you believe the worksheet result is wrong, review your combined income calculation or consult a tax preparer or the IRS directly.

Do I have to file a tax return if I only receive SSDI and no other income?

No. If SSDI is your only income and it is below the standard deduction for your filing status, you have no federal filing requirement. For 2024, the standard deduction is $14,600 for single filers and $29,200 for married filing jointly. However, if you have other income or if you want to claim a refundable tax credit, you should file anyway.