Whether you report SSDI depends on your total income and filing status

Most people who receive only SSDI do not report it as income on their federal tax return. Social Security Disability Insurance benefits are not taxable income under federal law—the IRS treats them differently from wages or self-employment earnings. However, if you have other income sources, the rules change. You may have to report SSDI if your "combined income" crosses a threshold set by the IRS, and that threshold is low enough that many beneficiaries hit it.

Combined income is not the same as your total income. The IRS calculates it by taking your adjusted gross income (AGI), plus nontaxable interest, plus half of your SSDI benefits. If combined income exceeds $25,000 (single filer) or $32,000 (married filing jointly), you must report a portion of your SSDI as taxable. If combined income is below those thresholds, you file but do not report SSDI itself.

The reason combined income matters is that Congress wanted to tax SSDI only for beneficiaries with other substantial income. A person living on SSDI alone almost never pays tax on it. A person with SSDI plus a part-time job, pension, or investment income may.

Key Takeaways

  • SSDI is not taxable income by itself, but combined income (AGI plus nontaxable interest plus half your SSDI) determines whether you report any of it.
  • If combined income is under $25,000 (single) or $32,000 (married filing jointly), you do not report SSDI on your return.
  • If combined income exceeds those thresholds, you report either 50% or 85% of your SSDI as taxable, depending on how far over the threshold you are.
  • You must file a return if you have any earned income or if your unearned income exceeds the standard deduction, even if no SSDI is taxable.
  • The IRS uses Form 1040 and the SSDI worksheet in the instructions to calculate the taxable portion; a tax preparer or free software can do this for you.

How combined income is calculated

Combined income is the IRS's way of measuring whether you have enough other money that SSDI should be taxed. It is not your total income. The formula is: adjusted gross income (AGI) + nontaxable interest + (one-half of SSDI benefits received during the year).

Adjusted gross income includes wages, self-employment income, taxable pensions, taxable IRA distributions, capital gains, and taxable interest. It does not include standard deductions or personal exemptions. Nontaxable interest means interest from municipal bonds or certain savings bonds. The half-SSDI figure is exactly what it sounds like: if you received $12,000 in SSDI during the year, you add $6,000 to the calculation.

Example: You received $14,400 in SSDI and earned $8,000 from part-time work. Your AGI is $8,000. You have no nontaxable interest. Combined income = $8,000 + $0 + ($14,400 ÷ 2) = $8,000 + $7,200 = $15,200. This is below $25,000, so you do not report any SSDI as taxable, even though you have other income.

Another example: You received $14,400 in SSDI, earned $12,000 from work, and have $1,000 in taxable interest. Your AGI is $13,000. Combined income = $13,000 + $0 + $7,200 = $20,200. Still below $25,000, so no SSDI is taxable.

The two income thresholds and what happens when you cross them

The IRS has set two thresholds. The first is $25,000 for single filers and $32,000 for married couples filing jointly. If combined income is at or below this threshold, you owe no tax on SSDI. If combined income exceeds this threshold, you move to the second rule.

When combined income is between the first threshold and the second threshold ($34,000 for single, $44,000 for married filing jointly), you report the lesser of: (1) 50% of the amount by which combined income exceeds the first threshold, or (2) 50% of your total SSDI benefits for the year. Whichever number is smaller is the amount you report as taxable.

When combined income exceeds the second threshold, the calculation is more complex. You report the lesser of: (1) 85% of the amount by which combined income exceeds the second threshold, plus 50% of SSDI benefits above a certain level, or (2) 85% of your total SSDI benefits. Again, whichever is smaller is what you report.

Example: Single filer, $14,400 SSDI, $15,000 earned income, no other income. AGI = $15,000. Combined income = $15,000 + $0 + $7,200 = $22,200. This is below $25,000, so no SSDI is taxable.

Another example: Single filer, $14,400 SSDI, $18,000 earned income. AGI = $18,000. Combined income = $18,000 + $0 + $7,200 = $25,200. This exceeds $25,000 by $200. You calculate 50% of $200 = $100, and 50% of $14,400 = $7,200. The lesser is $100, so you report $100 of SSDI as taxable income.

When you must file a return even if SSDI is not taxable

You may have to file a federal tax return even if no part of your SSDI is taxable. The IRS requires a return if your earned income (wages, self-employment) or unearned income (interest, dividends, capital gains) exceeds the standard deduction for your filing status and age.

For 2024, the standard deduction is $14,600 for a single person under 65, and $18,350 for a single person 65 or older. For married couples filing jointly, it is $29,200 (both under 65) and higher if one or both are 65 or older. If your earned income alone is $1, you must file. If your unearned income (interest, dividends) is more than $1,300 (for 2024), you must file.

SSDI itself does not count toward the standard deduction threshold. So if you have only SSDI and no other income, you do not have to file. But if you have SSDI plus any wages, self-employment income, or substantial interest or dividends, you likely do have to file—even if the combined income is low enough that no SSDI is taxable.

How to report SSDI on your return

If you determine that part of your SSDI is taxable, you report it on Form 1040 (the main federal income tax form). The IRS provides a worksheet in the Form 1040 instructions that walks you through the combined income calculation and tells you how much SSDI to report.

You do not report SSDI on a separate form. Instead, you include the taxable amount as part of your total income on line 5b of Form 1040 (labeled "Social security benefits"). The worksheet ensures you calculate the correct amount.

If you use tax software (such as TurboTax, H&R Block, or the IRS Free File program), the software asks you to enter your total SSDI benefits received during the year, and it runs the combined income calculation automatically. You do not have to do the math yourself. If you work with a tax preparer or CPA, give them your Social Security statement (Form SSA-1099) and your other income documents, and they will handle the calculation.

What documents you need

To file your return accurately, you need Form SSA-1099, which the Social Security Administration sends to you by January 31 each year. This form shows the total SSDI benefits you received in the previous year. Keep it with your tax records.

You also need documentation of any other income: W-2 forms from employers, 1099 forms for self-employment or contract work, 1099-INT for interest, 1099-DIV for dividends, and 1099-R for pension or IRA distributions. If you have nontaxable interest (from municipal bonds or certain savings bonds), you need the statements showing that income.

If you are filing by paper, attach a copy of your Form SSA-1099 to your return. If you are filing electronically, you do not attach it, but keep it for your records in case the IRS asks questions later.

State income tax and SSDI

Most states do not tax SSDI benefits at all, regardless of your other income. However, a few states—including Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, and Vermont—tax SSDI under certain conditions. The rules vary by state.

If you live in one of these states, check your state tax instructions or contact your state revenue department to see whether you owe state tax on SSDI. Some states use the same combined income thresholds as the federal government; others have different rules. A few states tax SSDI only if your total income exceeds a certain amount, regardless of the federal combined income calculation.

If you file a federal return, you will likely file a state return as well (if your state requires it). Your tax software or preparer will guide you through state-specific rules.

Frequently Asked Questions

Do I have to report SSDI if I live on it alone and have no other income?

No. If SSDI is your only income, you do not have to file a federal tax return and you do not report SSDI as taxable income. The IRS does not tax SSDI for people with no other substantial income.

What counts as "other income" for the combined income calculation?

Wages, self-employment income, taxable interest, dividends, capital gains, taxable pensions, and taxable IRA distributions all count. Nontaxable interest (from municipal bonds) also counts in the combined income formula. Child support, alimony, and gifts do not count.

If I earn money from work, do I have to report SSDI even if I earn very little?

Not necessarily. Combined income, not earned income alone, determines whether SSDI is taxable. If your earned income plus half your SSDI benefits stays below $25,000 (single) or $32,000 (married), you do not report SSDI as taxable. But you may still have to file a return if your earned income exceeds the standard deduction.

Can I use free tax software to calculate the taxable portion of SSDI?

Yes. The IRS Free File program and most commercial tax software (including free versions) include the SSDI worksheet and calculate the taxable amount for you. You enter your total SSDI from Form SSA-1099 and your other income, and the software does the math.

What happens if I report SSDI incorrectly on my return?

If you underreport, the IRS may send you a notice asking for the additional tax owed, plus interest and possibly penalties. If you overreport, you may receive a refund. Either way, keep your Form SSA-1099 and income documents for at least three years in case the IRS asks questions.