Whether You Must File Taxes on Disability Income

Whether you file taxes depends on how much income you have and what type of income it is. Social Security Disability Insurance (SSDI) and Supplemental Security Income (SSI) are treated differently by the IRS, and your filing requirement also depends on whether you have other income—wages, self-employment earnings, interest, or dividends.

SSDI is taxable income to the IRS, but only if your "combined income" exceeds a certain threshold. SSI is never taxable, even if you have other income. The key is calculating your combined income correctly, because that number determines whether you owe taxes and whether you must file a return.

If you do not file when you are required to, you may lose refundable tax credits, face penalties, or trigger an audit. The IRS does not automatically know you receive disability benefits—you must report it on your tax return or not file at all.

Key Takeaways

  • SSDI is taxable income if your combined income (SSDI plus other income) exceeds $25,000 for single filers or $32,000 for married filing jointly; SSI is never taxable.
  • Combined income includes your SSDI or SSI, plus wages, self-employment income, interest, dividends, and certain other sources, but not all income counts the same way.
  • You must file a tax return if your gross income meets the IRS threshold for your filing status, even if no tax is owed, to claim refundable credits like the Earned Income Tax Credit.
  • Social Security sends Form SSA-1099 in January showing your SSDI or SSI payments; you use this to complete your tax return.
  • If you have little or no other income besides SSDI or SSI, you may not be required to file, but filing can result in a refund if you had taxes withheld or may have access to for credits.

How SSDI and SSI Are Taxed Differently

SSDI payments are subject to federal income tax, but only if your combined income exceeds the IRS thresholds. For 2024, the threshold is $25,000 for single filers, $32,000 for married filing jointly, and $0 for married filing separately. If your combined income is below these amounts, your SSDI is not taxed, and you may not need to file.

SSI payments are never subject to federal income tax, regardless of how much other income you have. This is a permanent rule. However, if you have other income (wages, interest, self-employment), you may still be required to file a tax return to report that income or to claim refundable credits.

The difference matters because SSDI recipients with other income sources often face a tax bill, while SSI recipients do not. If you receive both SSDI and SSI in the same year (which is rare but possible), only the SSDI portion is subject to the combined income test.

What Counts as Combined Income for SSDI

Combined income is not the same as gross income. For SSDI tax purposes, the IRS calculates combined income as one-half of your SSDI benefits plus all other income you received during the year.

Other income includes wages, self-employment income, interest, dividends, rental income, and certain retirement distributions. It does not include SSI payments, railroad retirement benefits, or certain veterans' benefits. If you are unsure whether a specific income source counts, the IRS worksheet on Form 1040 instructions walks through the calculation.

Example: You received $15,000 in SSDI and earned $8,000 in wages. Your combined income is ($15,000 ÷ 2) + $8,000 = $15,500. Since this is below $25,000, your SSDI is not taxed. If you had earned $18,000 instead, your combined income would be $25,500, and part of your SSDI would be taxable.

When You Must File a Tax Return

You must file a federal tax return if your gross income meets the threshold for your filing status, even if you owe no tax. Gross income is different from combined income—it is the total of all income before any deductions.

For 2024, the gross income thresholds are approximately $14,600 for single filers under 65, $18,000 for single filers 65 and older, and $29,200 for married filing jointly (under 65). These amounts change each year. If you have only SSDI or SSI and no other income, you likely do not meet the threshold and are not required to file.

However, you should file even if not required if you had taxes withheld from other income or if you may have access to for refundable credits like the Earned Income Tax Credit (EITC) or the Additional Child Tax Credit. These credits can result in a refund even if you owe no tax.

Form SSA-1099 and Reporting Your Benefits

In January, the Social Security Administration sends you Form SSA-1099 showing the total SSDI or SSI you received in the previous year. This form lists the amount in Box 5 (for SSDI) or Box 3 (for SSI). You use this amount to complete your tax return.

Keep this form with your tax records. If you file electronically, you do not need to mail the form, but you must have it available if the IRS requests it. If you lost your copy, you can request a duplicate from Social Security online or by calling 1-800-772-1213.

Do not assume the amount on Form SSA-1099 is what you owe in taxes. The form straightforward reports what you received. Whether any of it is taxable depends on your combined income calculation and your filing status.

How Much SSDI Is Taxable

If your combined income exceeds the threshold, not all of your SSDI becomes taxable—only a portion does. The IRS uses a formula to calculate the taxable amount, and it is never more than 85 percent of your SSDI benefits.

The calculation is complex and depends on your combined income level. For most SSDI recipients whose combined income is between the lower threshold ($25,000 single, $32,000 married) and a higher threshold ($34,000 single, $44,000 married), up to 50 percent of benefits above the lower threshold is taxable. If combined income exceeds the higher threshold, up to 85 percent of benefits may be taxable.

You do not calculate this yourself—the IRS worksheet on Form 1040 instructions does it for you. If you use tax software or a tax preparer, they will explore the formula automatically. The key is providing accurate information about your SSDI and other income.

Filing Options and Getting Help

You can file your tax return by mail, electronically through IRS-approved software, or with the help of a tax preparer. If your income is below certain thresholds, you may may have access to for free tax preparation through the IRS Volunteer Income Tax information (VITA) program, which operates at libraries, community centers, and nonprofits nationwide.

When you file, report your SSDI on line 5b of Form 1040 (or the equivalent line on your state return). If you use tax software, it will prompt you to enter this information. If you use a tax preparer, bring your Form SSA-1099 and any other income documents.

If you have questions about whether you must file or how to report your benefits, the IRS Publication 915 covers SSDI and railroad retirement benefits in detail. You can also call the IRS at 1-800-829-1040 or visit irs.gov.

Frequently Asked Questions

Do I have to file taxes if I only receive SSDI and have no other income?

Probably not. If SSDI is your only income and it is below the gross income threshold for your filing status (around $14,600 for single filers under 65 in 2024), you are not required to file. However, if you had taxes withheld or may have access to for refundable credits, filing will result in a refund.

What if I work part-time and receive SSDI?

You must report both your wages and your SSDI on your tax return. Your combined income (half your SSDI plus your wages) determines whether any SSDI is taxable. You will also need to report your work income on Schedule C (self-employment) or as W-2 wages, depending on how you work.

Can I file taxes if I receive SSI instead of SSDI?

SSI is never taxable, so you do not report it on your tax return. However, if you have other income (wages, interest, self-employment), you must file a return to report that income. You will not receive Form SSA-1099 for SSI, but you should keep records of what you received in case the IRS asks.

What happens if I do not file when I am supposed to?

You may lose refundable tax credits, face a failure-to-file penalty, or trigger an audit. If you owe tax and do not file, interest and penalties accumulate. If you are owed a refund, you have three years to claim it before it goes to the Treasury.

Where do I report my SSDI on the tax form?

On Form 1040, report your SSDI on line 5b under "Social security benefits." If you use tax software, it will ask you to enter this amount in the Social Security section. Your tax preparer will know where to place it.