How to Report SSDI Income on Your Tax Return

Where SSDI Goes on Your Tax Form

You report SSDI on Form 1040, line 5b, under "Social Security benefits." This is the main federal income tax form most people file each year. The Social Security Administration sends you a Form SSA-1099 in January showing how much you received in the previous year — use that number when you fill out line 5b.

The form itself does not ask whether the benefit is SSDI or retirement or survivor benefits. It treats all Social Security income the same way for tax purposes. You enter the gross amount you received, not the net amount after Medicare premiums were taken out. If you had taxes withheld from your SSDI payments, those appear on the same Form SSA-1099 and reduce what you owe overall.

If you use tax software, it will walk you through entering this information step by step. If you file by paper, the instructions that come with Form 1040 explain how to complete line 5b. The IRS also publishes Publication 915, which covers Social Security taxation in detail and includes a worksheet to calculate how much of your benefit is taxable.

Key Takeaways

SSDI income goes on Form 1040, line 5b, using the amount shown on your Form SSA-1099 from Social Security.
You report the full gross amount you received, even if Medicare premiums or taxes were deducted from your payments.
Whether any of your SSDI is actually taxable depends on your total income and filing status, not on reporting it.
If you owe taxes on SSDI, you can request that Social Security withhold federal income tax from future payments to avoid a large bill at tax time.
Form SSA-1099 arrives by January 31 each year and shows both your SSDI and any federal tax already withheld.

How to Know If Your SSDI Is Taxable

Not all SSDI is taxable, even though you report it. The IRS uses a calculation called combined income to determine the taxable portion. Combined income equals your adjusted gross income plus nontaxable interest plus half of your Social Security benefits. If your combined income falls below a threshold that depends on your filing status, none of your SSDI is taxable.

For 2024, if you file as single and your combined income is $25,000 or less, your SSDI is not taxable. If you file as married filing jointly, the threshold is $32,000. These thresholds have not changed since 1984, so they do not adjust for inflation each year. If your combined income exceeds the threshold, up to 50 percent or 85 percent of your SSDI becomes taxable, depending on how far above the threshold you are.

Publication 915 includes a detailed worksheet to calculate this. Many tax software programs do this calculation automatically once you enter your income and Social Security amount. If you are unsure whether you owe tax on SSDI, the Social Security Administration's website has an online calculator, or you can call 1-800-772-1213 to speak with a representative who can walk through the numbers with you.

What Counts as Income for This Calculation

Combined income includes wages, self-employment income, interest, dividends, capital gains, rental income, and pension income. It also includes income from a job outside the United States. Certain types of income are excluded: tax-exempt interest (such as interest from municipal bonds), Supplemental Security Income (SSI), and veterans' benefits do not count toward combined income.

If you work while receiving SSDI, your wages count fully. If you are married and file jointly, your spouse's income counts too, even if your spouse does not receive Social Security. This can push your combined income over the threshold and make some of your SSDI taxable, even if your spouse's income alone would not trigger taxation.

If you have other sources of income — for example, a part-time job, a pension, or investment income — add those to your adjusted gross income first, then add half your SSDI, and compare the total to the threshold for your filing status. That total is your combined income.

Requesting Tax Withholding on Your SSDI

If you know you will owe federal income tax on your SSDI, you can ask Social Security to withhold tax from your monthly payments. This reduces the amount you receive each month but prevents a large tax bill when you file. You request withholding by completing Form W-4V and sending it to your local Social Security office or mailing it to the address on the form.

You can choose to have 7, 10, 12, or 22 percent of your benefit withheld. Social Security will not withhold a flat dollar amount — only a percentage. If you are unsure what percentage to choose, Publication 915 includes a worksheet to estimate your tax liability, and you can work backward from that number to pick a withholding rate.

Once you submit Form W-4V, withholding usually begins with your next payment. You can change or cancel withholding at any time by submitting a new form. If you change your income situation — for example, you start or stop working — you can adjust your withholding to match.

Filing Requirements and SSDI

You must file a federal tax return if your gross income exceeds the standard deduction for your age and filing status. For 2024, the standard deduction for a single person under 65 is $14,600. If you are 65 or older, it is $17,550. These amounts include SSDI income.

Even if your income is below the standard deduction, you may want to file anyway. If you had federal income tax withheld from your SSDI payments, filing a return will get you a refund of that tax. If you work and your employer withheld tax, filing is the only way to claim the Earned Income Tax Credit or other credits you may be may have access to to.

You can file using tax software, by mail, or with help from a tax professional. The IRS offers free filing options through its Free File program if your income is below a certain level. Some community organizations also offer free tax preparation help to people with low to moderate income.

What to Do If You Made a Mistake on a Prior Year Return

If you filed a return in a previous year and did not report your SSDI, or reported it incorrectly, you can file an amended return using Form 1040-X. You have three years from the original due date of the return to file an amendment and claim a refund. If you owe additional tax, there is no time limit, but the longer you wait, the more interest and penalties may accumulate.

Form 1040-X requires you to show the original amounts you reported, the corrected amounts, and the difference. You must file it by mail — you cannot file an amended return electronically through most tax software. Include a copy of the corrected Form 1040 and any supporting schedules. Mail it to the IRS address for your state, which is listed in the Form 1040-X instructions.

If you are unsure whether you need to amend a return, you can contact the IRS at 1-800-829-1040 or visit an IRS office. A tax professional can also review your prior returns and advise you on whether an amendment is necessary.

Frequently Asked Questions

Do I have to report SSDI if I did not owe any tax?

You must report SSDI on your tax return if your gross income exceeds the standard deduction for your filing status and age. However, if your income is below the standard deduction, you are not required to file. If you did file and had tax withheld from your SSDI, you should file to claim your refund even if you are not required to.

What if my SSDI was reduced because of work?

You report the amount you actually received, not the amount Social Security would have paid without the work reduction. Form SSA-1099 shows the net amount paid to you, and that is the number you use on your tax return. The work reduction does not change how SSDI is taxed.

Can I deduct medical expenses related to my disability?

You can deduct unreimbursed medical expenses if you itemize deductions and the expenses exceed 7.5 percent of your adjusted gross income. However, most people claim the standard deduction instead, which is simpler. A tax professional can tell you whether itemizing would save you money in your situation.

What happens if I do not file a return when I should have?

The IRS may assess penalties and interest on any tax you owe. If you had tax withheld from your SSDI, you will not get your refund unless you file. If you are several years behind, you can still file amended returns for the past three years and claim refunds. Contact the IRS or a tax professional to discuss your situation.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.