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

Social Security Disability Insurance (SSDI) itself is not taxable income in most cases. However, you may owe federal income tax if your combined income — which includes SSDI plus other money you earn or receive — crosses certain thresholds. The IRS calls this your "combined income," and it's the number that determines whether you file.

The threshold varies depending on your filing status and whether you're married. For a single filer in 2024, you generally must file if your combined income exceeds $25,900. For married couples filing jointly, the threshold is $32,900. These numbers change each year, so you'll want to check the current year's threshold when you're deciding whether to file.

The tricky part: your combined income includes not just SSDI, but also wages, self-employment income, interest, dividends, and other sources. Even if SSDI itself won't be taxed, the other income you have might push you over the filing threshold.

Key Takeaways

  • SSDI benefits themselves are usually not taxable, but you must count them toward your combined income to see if you owe taxes on other money you earned.
  • You must file a federal tax return if your combined income (SSDI plus all other income) exceeds the threshold for your filing status, which is $25,900 for single filers and $32,900 for married couples filing jointly in 2024.
  • If you work part-time or have investment income while receiving SSDI, that income counts toward your filing threshold even if SSDI itself does not.
  • Filing a tax return can sometimes benefit you, even if you don't owe taxes, because you may be may have access to to refundable tax credits like the Earned Income Tax Credit (EITC).

How the IRS calculates whether you must file

The IRS uses a formula called "combined income" to decide whether SSDI recipients must file. Combined income is calculated as: your Adjusted Gross Income (AGI) plus nontaxable interest plus half of your SSDI benefits.

Here's what that means in practice. Suppose you receive $1,500 per month in SSDI ($18,000 per year) and earn $10,000 from part-time work. Your combined income would be $10,000 (wages) plus half of $18,000 ($9,000), which equals $19,000. Since $19,000 is below the $25,900 threshold for single filers, you would not be required to file — though you might want to anyway if you're may have access to to a refund or tax credit.

The formula is the same whether you're single or married, but the threshold you're compared against changes. Married couples filing jointly use $32,900; married filing separately use $12,950.

When you should file even if you're not required to

Even if your combined income is below the filing threshold, you may want to file a tax return. The most common reason is the Earned Income Tax Credit (EITC), a refundable credit that can put money back in your pocket if you earned wages during the year.

If you worked part-time or had any self-employment income while receiving SSDI, you might may have access to for the EITC. The credit is worth up to $3,995 for single filers and up to $3,995 for married couples (amounts vary by year and income). Because it's refundable, you can receive the credit even if you owe no federal income tax — meaning the IRS sends you money.

Other reasons to file include claiming the Child Tax Credit if you have dependent children, or the American Opportunity Tax Credit if you're in school. You also file to report self-employment income, which affects your SSDI benefits in a separate way (through the Substantial Gainful Activity limit).

How SSDI income is reported to the IRS

The Social Security Administration sends you a Form SSA-1099-SM each January showing the total SSDI you received in the previous year. This form goes to you and to the IRS. You use it to calculate your combined income and to fill out your tax return if you file.

Keep this form with your tax records. If you file, you'll reference the amount on the SSA-1099-SM when you complete your federal return. The form shows the gross SSDI amount; it does not subtract any Medicare premiums or other deductions that may have been taken from your payments.

If you don't receive an SSA-1099-SM by early February, contact Social Security to request a replacement. You can also view your SSDI payment history online through your my Social Security account.

What happens if some of your SSDI becomes taxable

In rare cases, part of your SSDI can become taxable. This happens only if your combined income exceeds a higher threshold — $25,000 for single filers or $32,000 for married couples filing jointly. If you cross that line, up to 85% of your benefits may be subject to federal income tax.

This is uncommon for people receiving SSDI alone, but it can occur if you have substantial other income — for example, if you're married and your spouse has significant wages or investment income, or if you receive a large pension or inheritance. If this applies to you, the IRS worksheet in the tax instructions will show you how much of your SSDI is taxable.

State taxes work differently. Some states tax SSDI; most do not. Check your state's tax authority website or ask a tax preparer whether your state taxes disability benefits.

Filing your tax return with SSDI income

If you decide to file, you'll use Form 1040 (the standard federal income tax return) or Form 1040-SR if you're 65 or older. You'll report your SSDI on the form using the amount from your SSA-1099-SM.

You can file by mail, online using free IRS software, or with the help of a tax preparer. The IRS Free File program allows you to file for free if your income is below a certain threshold (usually around $79,000). Many community organizations and senior centers also offer free tax preparation help, especially for people with low to moderate income.

The filing important date is April 15 each year, though you can request an extension if you need more time. If you're owed a refund, filing electronically usually gets your money back faster — often within 21 days.

How working while on SSDI affects your taxes

If you're working and receiving SSDI, your wages count toward your combined income for tax purposes. They also affect your SSDI benefits through a separate rule called Substantial Gainful Activity (SGA). These are two different calculations, and both matter.

For taxes, your wages straightforward add to your combined income total. For SSDI, if your earnings exceed the SGA threshold (which changes yearly and is around $1,550 per month in 2024), Social Security may reduce or stop your benefits. You need to report your work to Social Security separately — filing a tax return does not do this automatically.

If you're in a trial work period or using a work incentive like Impairment Related Work Expenses (IRWE), keep detailed records of your earnings and expenses. These records help both Social Security and the IRS understand your situation correctly.

Frequently Asked Questions

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

No, not usually. If SSDI is your only income, your combined income will be below the filing threshold, so you're not required to file. However, if you're may have access to to a refundable tax credit like the EITC, filing can put money in your pocket even though you don't owe taxes.

What if I earned money from work during the year?

Your wages count toward your combined income. If your wages plus half your SSDI exceeds the threshold for your filing status, you must file. Even if it doesn't, you should file if you think you may have access to for the EITC or another refundable credit.

Will filing a tax return affect my SSDI benefits?

Filing a tax return itself does not change your SSDI benefits. However, if you earned wages, you must report that work income to Social Security separately. Social Security uses your earnings to decide whether you've exceeded the Substantial Gainful Activity limit, which can affect your benefits.

Can I file taxes online for free if I receive SSDI?

Yes. The IRS Free File program lets you file for free if your income is below the annual threshold (usually around $79,000). Many community organizations and senior centers also offer free tax help. You can also use IRS Free File Fillable Forms if you prefer to prepare your own return.

What if I owe taxes on my SSDI?

You would owe taxes only if your combined income exceeds the higher threshold ($25,000 single, $32,000 married filing jointly), which is uncommon. If you do owe, you can pay when you file or set up a payment plan with the IRS. Contact the IRS or a tax professional for help if you're unsure.