Filing Your Own SSDI Taxes: Step-by-Step

You can file your own SSDI taxes, but the process depends on whether you have other income and how much you earned

If you receive Social Security Disability Insurance (SSDI), you may or may not owe federal income tax on those benefits. The key is whether your combined income — SSDI plus any wages, interest, or other earnings — crosses the IRS threshold. If it does not, you have no filing requirement. If it does, you file like anyone else: using Form 1040 and reporting SSDI on line 5b of that form.

The IRS does not treat SSDI the same way it treats regular Social Security retirement benefits. Up to 85% of your SSDI can be taxable if your combined income is high enough. For most people on SSDI alone, though, there is no tax owed because SSDI payments are typically low and combined income stays below the threshold.

Filing yourself means gathering your own documents, doing the math, and either mailing a paper return or filing electronically. You do not need to hire a tax preparer, though many people do. The Social Security Administration sends you a Form SSA-1099 each January showing how much SSDI you received in the prior year — that is your starting point.

Key Takeaways

You receive a Form SSA-1099 from Social Security each January; this shows your total SSDI for the prior year and is required to file.
SSDI is only taxable if your combined income (SSDI plus wages, interest, and other sources) exceeds $25,000 for a single filer or $32,000 for married filing jointly.
Most people on SSDI alone owe no federal income tax because their combined income stays below the taxable threshold.
You file using Form 1040 and report SSDI on line 5b; you can file by mail or electronically through IRS Free File if your income is low enough.

Gather your documents before you start

Begin by collecting the Form SSA-1099 that Social Security mails to you by January 31 each year. This form shows your total SSDI payment for the prior calendar year in Box 5. You will need this number to complete your tax return.

Next, collect any other income documents you received: W-2 forms from an employer, 1099 forms for self-employment or contract work, 1099-INT for interest income, 1099-DIV for dividends, or 1099-R if you withdrew from a retirement account. If you have a spouse and file jointly, gather their documents too.

You will also need your Social Security number, date of birth, and the same information for your spouse if filing jointly. If you have dependents, gather their Social Security numbers and dates of birth as well. Keep receipts or records of any deductions you plan to claim — mortgage interest, property taxes, charitable donations, or medical expenses — though most people on SSDI use the standard deduction instead of itemizing.

Calculate whether you owe tax using the combined income test

The IRS uses a formula called combined income to determine if any of your SSDI is taxable. Combined income is calculated as: adjusted gross income (AGI) plus nontaxable interest plus half of your SSDI.

For example: suppose you earned $15,000 in wages and received $12,000 in SSDI, with no other income. Your combined income is $15,000 + $0 + ($12,000 ÷ 2) = $21,000. The threshold for a single filer is $25,000, so you are below it and owe no tax on your SSDI.

If your combined income exceeds $25,000 (single) or $32,000 (married filing jointly), then some or all of your SSDI becomes taxable. The IRS has a worksheet in Publication 915 that walks you through the exact calculation. If you are close to the threshold or have multiple income sources, using this worksheet or consulting a tax professional is worth the time.

File using Form 1040 and report SSDI on line 5b

Once you know whether your SSDI is taxable, you file using the standard Form 1040 (not the simplified 1040-SR, which is for people age 65 and older). Report your total SSDI from Box 5 of your SSA-1099 on line 5b of Form 1040. If none of it is taxable, you still report the full amount there; the form will show zero tax owed on that income.

Report all other income on the appropriate lines: wages on line 1, interest on line 2b, self-employment income on line 3, and so on. Add up your total income and subtract the standard deduction (which varies by age and filing status). If the result is zero or negative, you owe no tax.

The standard deduction for 2024 is $14,600 for a single filer under 65, $19,600 for a single filer 65 or older, $29,200 for married filing jointly under 65, and $30,750 for married filing jointly with one spouse 65 or older. These amounts change each year, so check the IRS website or your tax software for the current year.

Choose between paper filing and electronic filing

You can file your return by mail or electronically. Mailing takes longer — typically 4 to 6 weeks for the IRS to process — but requires only a stamp and an envelope. Print Form 1040, sign it, and mail it to the address shown in the form instructions for your state.

Electronic filing is faster and more accurate. If your income is below a certain threshold (which changes yearly but is usually around $79,000 for single filers), you may be able to use IRS Free File, a program that lets you file for no cost through IRS-approved software partners. You can find the Free File tool on IRS.gov. If your income is above the threshold or you prefer a different service, you can use commercial tax software like TurboTax, H&R Block, or TaxAct, which typically charge $0 to $200 depending on the complexity of your return.

E-filing also means you receive your refund faster — usually within 21 days if you choose direct deposit to your bank account. If you owe tax, you can pay by credit card, debit card, or bank transfer through the IRS website, or include a check with a paper return.

Handle the taxable portion of SSDI if your income is high

If your combined income exceeds the threshold, the IRS uses a two-tier calculation to determine how much of your SSDI is taxable. The first tier taxes up to 50% of your SSDI if combined income exceeds the first threshold ($25,000 single, $32,000 married). The second tier taxes up to an additional 35% if combined income exceeds a higher threshold ($34,000 single, $44,000 married).

This means the maximum taxable portion of your SSDI is 85%, but most people do not reach that level. Publication 915 from the IRS contains a detailed worksheet that walks through this calculation step by step. If you have significant other income — such as wages, self-employment income, or retirement account withdrawals — and your combined income is close to or above the threshold, using tax software or a tax preparer to calculate this correctly is worth the cost, because the math is straightforward to get wrong by hand.

Know what happens if you do not file when you should

If your combined income exceeds the threshold and you owe tax but do not file, the IRS can assess a failure-to-file penalty of 5% per month of the tax owed, up to 25%. You will also owe interest on any unpaid tax, compounded daily. The penalty and interest can grow quickly, so filing late is better than not filing at all.

If you filed late or made a mistake on a prior year return, you can file an amended return using Form 1040-X. The IRS typically has a three-year window to assess additional tax, so if you realize you missed a filing requirement or made an error, file the amended return as soon as you can.

If you cannot pay what you owe, the IRS offers payment plans and hardship options. You can set up an installment agreement online through IRS.gov or request an offer in compromise if your financial situation is severe. Contact the IRS at 1-800-829-1040 to discuss your options.

Frequently Asked Questions

Do I have to file a tax return if I only receive SSDI and no other income?

No. If SSDI is your only income and your combined income is below the threshold ($25,000 for single filers), you have no filing requirement. However, if you had taxes withheld from other income during the year, filing a return may result in a refund, so it can be worth doing even if you are not required to.

What if I earned money from work while on SSDI?

Wages count as income for the tax filing threshold. If you earned $20,000 and received $12,000 in SSDI, your combined income is $26,000, which exceeds the $25,000 threshold for single filers. You must file a return, and some of your SSDI becomes taxable. Note that work earnings may also affect your SSDI payment itself under the Substantial Gainful Activity rules, which is separate from tax filing.

Can I file electronically if I receive SSDI?

Yes. SSDI does not prevent you from using IRS Free File or commercial tax software. If your income is below the Free File threshold, you can file for no cost. If your income is higher, you can still file electronically through paid software, which is usually faster and more accurate than filing by mail.

Where do I report SSDI on my tax return?

Report your total SSDI from Box 5 of your Form SSA-1099 on line 5b of Form 1040. If you are using tax software, it will prompt you to enter this amount and calculate whether any is taxable based on your other income.

What if I disagree with the amount shown on my SSA-1099?

Contact Social Security directly at 1-800-772-1213 or visit your local Social Security office. Bring your payment records or bank statements showing deposits. Social Security can issue a corrected SSA-1099 if an error is found, and you can then file an amended tax return if needed.

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.