Social Security Disability is taxable income, but only if your total income crosses certain thresholds

You may owe federal income tax on your Social Security Disability Insurance (SSDI) benefits, but most people who receive only SSDI pay nothing. The tax depends on your combined income—a calculation that includes your SSDI, wages, interest, and other money you receive. If your combined income stays below a set threshold, you owe no tax on the benefits themselves.

The thresholds are low and have not changed since 1984. For a single filer, the first threshold is $25,000; for married filing jointly, it is $32,000. If you are married filing separately, the threshold is $0—meaning any combined income at all can trigger tax on your benefits. These numbers do not adjust for inflation, so more people cross them each year.

State taxes work differently. Most states do not tax SSDI at all. A handful—including Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, and Vermont—tax SSDI the same way the federal government does. A few others have their own rules. Check your state's tax authority website to learn what applies where you live.

Key Takeaways

  • You owe federal tax on SSDI only if your combined income (SSDI plus other earnings and income) exceeds $25,000 for single filers or $32,000 for married filing jointly.
  • Combined income includes wages, self-employment income, interest, dividends, pensions, and other benefits—not just SSDI.
  • If you cross the threshold, only a portion of your SSDI becomes taxable, not all of it; the exact amount depends on how far over you go.
  • Most states do not tax SSDI, but about a dozen do; check your state's rules before filing.
  • Social Security sends you a form SSA-1099 each January showing your SSDI for the prior year, which you use to calculate whether you owe tax.

How combined income is calculated

Combined income is not the same as your SSDI amount. It is the sum of your SSDI plus all other income you received during the year. The Social Security Administration defines it as one-half of your SSDI plus your adjusted gross income (AGI) plus any tax-exempt interest you earned.

Start with your adjusted gross income from your tax return—this includes wages, self-employment income, capital gains, taxable interest, taxable dividends, and taxable pensions. Then add back any tax-exempt interest (usually from municipal bonds). Then add one-half of your SSDI. That total is your combined income.

Example: You receive $1,500 per month in SSDI ($18,000 per year). You also work part-time and earn $10,000 in wages. You have $500 in taxable interest. Your combined income is $500 (half of $18,000) plus $10,000 plus $500, which equals $11,000. You are well below the $25,000 threshold, so you owe no tax on your SSDI.

Another example: You receive $2,000 per month in SSDI ($24,000 per year). You have a pension of $15,000 and $3,000 in taxable interest. Your combined income is $12,000 (half of $24,000) plus $15,000 plus $3,000, which equals $30,000. You are $5,000 over the $25,000 threshold, so part of your SSDI becomes taxable.

How much of your SSDI becomes taxable

If your combined income exceeds the threshold, the amount of SSDI that becomes taxable depends on how far over you go. The calculation has two tiers, and it is complex—most people use tax software or a tax preparer to work through it.

In the first tier, up to 50 percent of the amount you are over the threshold becomes taxable SSDI, but only up to 50 percent of your total SSDI for the year. In the second tier, if you are far enough over, up to an additional 35 percent of your SSDI can become taxable. The maximum is 85 percent of your SSDI.

Using the second example above: you are $5,000 over the threshold. Up to 50 percent of that $5,000—which is $2,500—could become taxable. But you only received $24,000 in SSDI, so 50 percent of that is $12,000. The smaller number ($2,500) is what becomes taxable. You would owe tax on $2,500 of your $24,000 SSDI.

Because this calculation is error-prone and the rules shift at different income levels, the IRS provides a worksheet in the instructions for Form 1040. Tax software usually handles it automatically if you enter your SSDI amount and other income correctly.

Reporting SSDI on your tax return

In January, the Social Security Administration mails you a form SSA-1099, which shows the total SSDI you received in the prior year. You use this form to report your benefits on your federal tax return.

You report your SSDI on line 5b of Form 1040 (the main federal income tax form). If you use tax software, you enter the amount from your SSA-1099, and the software calculates whether any of it is taxable based on your other income. If you file by hand or with a preparer, they will use the IRS worksheet to determine the taxable portion.

You do not have to file a federal return at all if your income is below the standard deduction for your filing status. For 2024, the standard deduction is $14,600 for single filers and $29,200 for married filing jointly. However, if you have other income (wages, interest, self-employment) that pushes you near or over these amounts, you should file to report it and claim any refundable credits you may be due.

What happens if you do not report SSDI on your return

If you owe tax on your SSDI and do not report it, the Social Security Administration has already reported your SSDI to the IRS on your SSA-1099. The IRS will notice the discrepancy between what you reported and what Social Security reported. This can trigger an audit, a bill for back taxes, and penalties and interest.

Even if you do not owe tax because your income is below the threshold, it is usually safer to file a return and report your SSDI. This creates a clear record that you received the benefits and that you were below the taxable threshold. It also allows you to claim any refundable credits (like the Earned Income Tax Credit) that you might be due.

Withholding taxes from your SSDI

Unlike wages, 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 filling out form W-4V and sending it to your local Social Security office.

You can choose to have 10, 15, 25, or 50 percent of your monthly SSDI payment withheld for federal taxes. This reduces the amount you receive each month but also reduces the tax bill you owe when you file your return. If you have other income (wages, a pension) that already has withholding, you may not need additional withholding from SSDI.

You can change or cancel your withholding request at any time by submitting a new W-4V form. Social Security will honor the change starting the month after they receive it.

State taxes and SSDI

Most states do not tax SSDI at all. However, Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, and Vermont do tax SSDI using the same federal thresholds and calculation method. A few other states have different rules or phase-outs.

If you live in a state that taxes SSDI, you will report it on your state income tax return the same way you report it federally. Some states allow you to request voluntary withholding from your SSDI as well, though the process varies. Contact your state's tax authority or department of revenue to learn the specific rules and whether you can set up withholding.

Frequently Asked Questions

If I work part-time while receiving SSDI, does my wage income count toward the tax threshold?

Yes. Your wages are part of your adjusted gross income, which is part of the combined income calculation. If you earn wages, you are more likely to cross the $25,000 or $32,000 threshold and owe tax on your SSDI. However, you may also be subject to SSDI work incentives that allow you to earn a certain amount before your benefits are reduced—these are separate from tax rules.

What if I receive both SSDI and Supplemental Security Income (SSI)?

SSDI is taxable as described above. SSI (Supplemental Security Income) is never taxable, and you do not report it on your federal return. If you receive both, you report only the SSDI on your tax return. The Social Security Administration will send you separate forms for each program.

Can I reduce my taxable SSDI by contributing to a retirement account?

Contributing to a traditional IRA or 401(k) reduces your adjusted gross income, which lowers your combined income and may keep you below the threshold. However, the reduction is modest because combined income includes one-half of your SSDI regardless. Consult a tax preparer to see whether retirement contributions would help in your situation.

Do I owe tax if my only income is SSDI?

No. If SSDI is your only income, your combined income equals one-half of your SSDI, which is always below the $25,000 threshold for single filers. You owe no federal tax on your benefits. You may still want to file a return to claim refundable credits or to create a clear record for Social Security.

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

Contact your local Social Security office and ask them to review your record. Errors can happen—for example, if a payment was credited to the wrong year or if you received a retroactive adjustment. Social Security can issue a corrected SSA-1099 if they find a mistake. Keep a copy of your request for your records.