Most people on SSDI don't file taxes, but some do

Whether you have to file a tax return on SSDI depends on how much money you earn from work and whether you have other income. The Social Security Administration does not automatically withhold taxes from SSDI payments the way an employer does from a paycheck. That means you might owe taxes at the end of the year—or you might not, depending on your situation.

The IRS has specific rules about when SSDI becomes taxable income. If you earn wages from a job, have interest or dividends, or receive other types of income, you may cross a threshold that requires you to file. Even if you don't owe taxes, filing can sometimes work in your favor by getting you a refund.

Key Takeaways

  • You must file taxes if your earned income (wages from work) plus half your SSDI benefits exceeds a certain amount that varies by filing status.
  • SSDI by itself is rarely enough to trigger a tax filing requirement, but any wages you earn from work almost always do.
  • Up to 85 percent of your SSDI can be taxable if your combined income is high enough, but most people on SSDI pay no federal income tax on their benefits.
  • The IRS Form SSA-1099 you receive each January shows how much SSDI you got that year and is used to calculate whether you owe taxes.

How the IRS counts SSDI as income

The IRS uses a formula called "combined income" to decide if your SSDI is taxable. Combined income means your adjusted gross income plus nontaxable interest plus half of your SSDI benefits. If that total exceeds a base amount, some of your SSDI becomes taxable.

The base amounts are: $25,000 if you file as single, $32,000 if you file as married filing jointly, and $0 if you file as married filing separately. These thresholds have not changed since 1984, which means they explore the same way regardless of what year you receive your benefits.

Here is what matters in practice: if you have no earned income and no other income sources, your combined income is just half your SSDI. Since the base amount is $25,000, you would need to receive more than $50,000 in SSDI per year for any of it to be taxable. Almost no one on SSDI receives that much.

When work income makes SSDI taxable

Wages from a job are the most common reason SSDI becomes taxable. Even modest earnings can push your combined income over the threshold. If you earn $15,000 in wages and receive $12,000 in SSDI, your combined income is $15,000 plus $6,000 (half your SSDI), which equals $21,000—still under the $25,000 threshold for single filers. But if you earn $20,000 and receive $12,000 in SSDI, your combined income is $26,000, and now some of your SSDI is taxable.

This is one reason many people on SSDI are careful about how much they work. The Social Security Administration has its own rules about how much you can earn without losing benefits (called the "substantial gainful activity" limit), which is separate from the tax question. You could earn enough to stay on SSDI but still trigger a tax filing requirement.

Self-employment income counts the same way as wages. If you run a small business or do freelance work, that income goes into the combined income calculation.

Other income that affects your SSDI taxes

Interest from a savings account, dividends from investments, rental income, and pensions all count toward combined income. Even a small amount of interest can push you over the threshold if you are close to it already.

Certain types of income do not count. Supplemental Security Income (SSI) is not included in the calculation. Neither is workers' compensation, veterans' benefits, or certain railroad retirement benefits. If you receive those, they do not make your SSDI taxable.

How much of your SSDI can be taxed

If your combined income exceeds the base amount, the IRS taxes either 50 percent or 85 percent of your SSDI, whichever is less. The exact percentage depends on how far over the threshold you go.

For most people whose combined income is only slightly above the base amount, up to 50 percent of their SSDI is taxable. Only people with much higher combined income—typically those with substantial work earnings or investment income—face the 85 percent rate. The IRS worksheet on Form 1040 walks through the calculation, though a tax preparer can do this for you.

The form you receive and what to do with it

In January, Social Security sends you Form SSA-1099, which shows how much SSDI you received in the previous year. This is the document you use to file your taxes. You report the amount from the SSA-1099 on your federal tax return, usually on Form 1040.

Keep the SSA-1099 with your tax records. If you work with a tax preparer or use tax software, you will enter the information from this form. If you file on your own, the IRS instructions for Form 1040 explain where the SSDI amount goes and how to calculate whether any of it is taxable.

When you should file even if you might not owe taxes

You are not required to file if your income is below the threshold for your filing status. But filing can be worth doing anyway if taxes were withheld from your wages or if you are may have access to to a refundable tax credit like the Earned Income Tax Credit (EITC).

If you worked during the year, your employer likely withheld federal income tax from your paycheck. If your total tax for the year is less than what was withheld, you get a refund. The EITC is a credit for people with low to moderate earned income, and it can result in a refund even if you owe no tax. Filing to claim these can put money back in your pocket.

Frequently Asked Questions

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

Almost certainly not. You would need to receive more than $50,000 per year in SSDI alone for any of it to be taxable, and the average SSDI payment is much lower. If SSDI is your only income source, you do not meet the filing requirement.

What if I earned wages but they were withheld from my paycheck?

You should file a tax return. Even though you may not owe taxes, filing lets you claim back the taxes that were withheld from your wages. You will receive a refund if more was withheld than you actually owe.

Does receiving SSDI affect my tax refund?

SSDI itself does not reduce your refund. Your refund depends on how much tax was withheld from wages and whether you may have access to for credits like the EITC. SSDI income may affect whether some of your benefits are taxable, but that is a separate calculation.

Can I get help filing my taxes if I am on SSDI?

Yes. The IRS Volunteer Income Tax information (VITA) program offers free tax preparation for people with low to moderate income. You can find a VITA site near you through the IRS website. Many community organizations and senior centers also offer free tax help.

What happens if I don't file taxes when I should have?

If you owe taxes and do not file, penalties and interest accrue over time. If you are owed a refund, you have three years to claim it before the money goes to the U.S. Treasury. If you realize you should have filed, contact the IRS or a tax professional about filing a late return.