Whether you must file taxes on SSDI depends on your total income, not just your benefits

You may owe federal income taxes even if you receive Social Security Disability Insurance (SSDI), but not because of the SSDI itself. What matters is your combined income—that is, SSDI plus any other money you earned or received that year. The Social Security Administration counts SSDI as taxable income only if your total income exceeds a certain threshold, which varies depending on your filing status and whether you have other sources of income.

The threshold is low enough that many people on SSDI do end up filing. If you earned wages from work, received interest or dividends, had rental income, or got money from a pension or annuity, you are more likely to cross the line. The IRS publishes a worksheet each year to help you figure out whether you owe taxes, and the Social Security Administration sends you a form (SSA-1099) in January that shows how much SSDI you received.

Key Takeaways

  • You file taxes based on your total income for the year, which includes SSDI plus wages, interest, pensions, and other money you received.
  • The Social Security Administration sends you a form SSA-1099 by January 31 showing your SSDI income for the previous year.
  • The IRS publishes a worksheet each year to help you determine whether your combined income is high enough to require filing.
  • If you earned money from work while on SSDI, you are more likely to owe taxes, and you should file even if you think you might not owe anything.
  • Filing taxes does not affect your SSDI benefits, but not filing when you should can result in penalties and interest.

How the IRS counts SSDI as income

The IRS does not tax SSDI the same way it taxes wages. Instead, it uses a formula that includes your SSDI plus half of your benefits, plus any other income you had. This combined number is called your "combined income." If your combined income is below a certain threshold, none of your SSDI is taxable. If it is above the threshold, up to 50 percent or 85 percent of your benefits may be taxable, depending on how far above the threshold you go.

The thresholds are $25,000 for single filers and $32,000 for married couples filing jointly. These numbers have not changed since 1984, which means more people cross them each year as wages and other income rise. If you are married and file separately, the threshold is $0, meaning any combined income at all can trigger taxation of your benefits.

The IRS provides a worksheet in the instructions for Form 1040 that walks you through this calculation step by step. You can also use the Social Security Administration's online calculator, which asks you questions about your income sources and tells you whether you likely owe taxes.

What counts as income when you are on SSDI

For tax purposes, income includes wages from any job you work, whether full-time or part-time. It also includes net profit from self-employment, taxable interest from savings accounts or bonds, dividends from stocks or mutual funds, capital gains from selling property or investments, rental income, and income from pensions, annuities, or retirement accounts.

Some types of income do not count. Supplemental Security Income (SSI) is not taxable, so if you receive both SSDI and SSI, only the SSDI factors into the combined income calculation. Gifts and inheritances are not taxable income. Money you receive from selling your home is not taxable if you meet certain conditions. Workers' compensation is not taxable. Certain scholarships and educational grants are not taxable.

If you are unsure whether a particular source of money counts as income, the IRS website has a publication called "Publication 17: Your Federal Income Tax" that lists what is and is not taxable. You can also ask a tax preparer or call the IRS directly.

The SSA-1099 form and what to do with it

By January 31 each year, the Social Security Administration mails you a form called SSA-1099 (or sends it electronically if you set up a my Social Security account). This form shows the total amount of SSDI you received in the previous calendar year. You will receive one SSA-1099 for each person in your household who receives SSDI—if you and your spouse both receive benefits, you each get your own form.

Keep the SSA-1099 with your tax records. You do not send it to the IRS, but you use the number on it (Box 5, labeled "Benefits") when you fill out your tax return. If you use tax software, you enter this number when the software asks about Social Security income. If you file by paper, you report it on Form 1040, line 5a.

If you do not receive an SSA-1099 by early February, you can log into your my Social Security account and view it there, or call Social Security at 1-800-772-1213 and ask them to mail you a copy. Do not guess at the amount—use the official form.

When you must file even if you think you owe nothing

You should file a tax return if your combined income is above the threshold for your filing status, even if you believe you will not owe any tax. Filing protects you in several ways. If you earned wages and your employer withheld taxes from your paycheck, filing is the only way to get that money back as a refund. If you are may have access to to the Earned Income Tax Credit (EITC), you must file to claim it.

Filing also protects you from penalties. If the IRS later determines that you should have filed and did not, they can assess a failure-to-file penalty on top of any taxes owed, plus interest. The penalty is usually 5 percent of the unpaid tax for each month you are late, up to 25 percent total. Interest accrues daily and compounds.

If you worked and earned income while on SSDI, file a return. If you received interest or dividends, file a return. If you are unsure, use the IRS worksheet or the Social Security Administration's calculator—both are free and take about 15 minutes.

How filing taxes affects your SSDI benefits

Filing a tax return does not change your SSDI benefits. The Social Security Administration does not reduce your monthly payment because you filed taxes or because you owe taxes. Your SSDI amount is set based on your work history and the date you became disabled, and it stays the same regardless of your tax situation.

However, if you earned wages while on SSDI, those wages may affect your benefits through a different rule called the Substantial Gainful Activity (SGA) limit. If you earned more than the SGA threshold (which changes each year and is around $1,470 per month in 2024), Social Security may determine that you are no longer disabled and stop your benefits. This is separate from taxes—it is about whether your work shows you can do substantial work, not about how much you owe the IRS.

To avoid this, report your work and earnings to Social Security as soon as you start working. Social Security has programs like Impairment Related Work Expenses (IRWE) and Plans to Achieve Self-Support (PASS) that can help you work and keep your benefits. But you must report the work first.

Where to get help filing taxes on SSDI

If you have a straightforward tax situation—only SSDI and maybe one W-2 from an employer—you can file for free using IRS Free File, which is available at IRS.gov. You answer questions in tax software, and the software fills out your return for you. If you earned less than a certain amount (which changes each year), you may have access to for free software.

If your situation is more complex, or if you are unsure whether you owe taxes, you can visit a Volunteer Income Tax information (VITA) site. VITA is a free tax preparation service run by the IRS and local nonprofits. You can find a VITA site near you at IRS.gov or by calling 211. Bring your SSA-1099, any W-2s from employers, and records of any other income.

You can also hire a tax preparer or certified public accountant (CPA). This costs money, but if your situation is complicated, the cost may be worth it. Some tax preparers specialize in working with people on disability benefits and understand the rules around work and SSDI.

Frequently Asked Questions

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

Probably not. If SSDI was your only income and it was below $12,550 (for single filers in 2023), you do not have to file. But use the IRS worksheet to be sure, because the calculation includes half your benefits plus your other income, not just your SSDI amount.

What if I earned money from work while on SSDI?

You should file a tax return. Your wages count as income and may push your combined income above the threshold. You also need to report your work to Social Security so they can determine whether it affects your benefits under the SGA rule. Filing taxes and reporting work are two separate things, but both matter.

Can I file taxes online if I am on SSDI?

Yes. You can use IRS Free File if you may have access to, or you can use any tax software you purchase. You enter your SSA-1099 information the same way you would on a paper return. If you need help, VITA sites offer free in-person information.

What happens if I file taxes late?

If you owe taxes and file late, the IRS charges a failure-to-file penalty (usually 5 percent per month, up to 25 percent) plus interest on the unpaid amount. If you are owed a refund, there is no penalty for filing late, but you lose the refund if you do not file within three years.

Does paying taxes reduce my SSDI check?

No. Your SSDI payment is based on your work history and disability status, not on your tax situation. Paying taxes does not change your monthly benefit amount. However, earning too much money from work can trigger the SGA rule and cause Social Security to review whether you are still disabled.