The short answer: it depends on your total income
You may have to pay federal income tax on part of your Social Security Disability Insurance (SSDI) benefits, but most people who receive only SSDI do not. The tax applies only if your combined income exceeds a certain threshold — and combined income includes not just your SSDI, but also wages, interest, dividends, and other money you receive.
The threshold is low: $25,000 for a single filer, $32,000 for married couples filing jointly. If you cross that line, you may owe tax on up to 85 percent of your benefits. But if your only income is SSDI and it stays below these amounts, you will not owe federal income tax on it.
State income tax is separate. Some states do not tax SSDI at all. Others tax it the same way the federal government does. A few tax it differently. You need to check your own state's rules.
Key Takeaways
- You only pay federal tax on SSDI if your combined income (SSDI plus all other income) exceeds $25,000 for single filers or $32,000 for married couples filing jointly.
- Combined income includes wages, self-employment income, interest, dividends, and certain other sources — not just your SSDI payment.
- If you do owe tax, you pay it on up to 85 percent of your benefits, not the full amount.
- State tax rules for SSDI vary widely, and some states do not tax disability benefits at all.
- Social Security sends you a form SSA-1099 each January showing how much you received, which you use to calculate whether you owe tax.
How Social Security calculates combined income
The IRS and Social Security use a specific definition of combined income that is not the same as your gross income from work. Combined income is your adjusted gross income (the number on your tax return before deductions) plus any tax-exempt interest you earned, plus half of your SSDI benefits.
This matters because it means even if you have no wages or other income, half of your SSDI counts toward the threshold. So if you receive $1,500 per month in SSDI ($18,000 per year), half of that ($9,000) counts toward your combined income. If you also earn $16,000 from part-time work, your combined income is $25,000 — exactly at the threshold for a single filer.
Tax-exempt interest is interest from municipal bonds or certain other sources that does not show up on your regular tax return. The IRS still counts it toward combined income for SSDI tax purposes.
The income thresholds and how much you pay
The thresholds have not changed since 1984. For federal tax purposes, they are:
| Filing Status | Threshold |
|---|---|
| Single | $25,000 |
| Married filing jointly | $32,000 |
| Married filing separately | $0 |
If your combined income exceeds the threshold, you calculate the tax in two steps. First, take the amount over the threshold. Then, take the smaller of that number or half your SSDI benefits. That smaller number is your provisional excess. You pay tax on the smaller of your provisional excess or $4,500 (for single filers) or $6,000 (for married filing jointly). If your income is much higher, you may pay tax on up to 85 percent of your benefits instead.
This is complex math, and most people use tax software or a tax professional to calculate it. The IRS has a worksheet in Publication 915 that walks through the calculation step by step.
What form you receive and when
In January of each year, Social Security mails you a Form SSA-1099 showing how much SSDI you received in the previous year. This is the form you use to report your benefits on your tax return. You will receive it even if you do not owe tax on your benefits — it is straightforward a record of what you received.
The SSA-1099 shows the gross amount of benefits paid to you. It does not calculate whether you owe tax; that is your responsibility or your tax preparer's. Keep this form with your tax records.
If you did not receive an SSA-1099 by early February, you can request one from Social Security online through your my Social Security account, by phone at 1-800-772-1213, or by visiting a local Social Security office.
State income tax rules for SSDI
Thirteen states do not tax SSDI benefits at all: Alabama, Arkansas, Florida, Georgia, Illinois, Indiana, Iowa, Kentucky, Louisiana, Mississippi, Missouri, Oklahoma, and Pennsylvania. If you live in one of these states, you will not owe state income tax on your SSDI no matter how much you receive.
Most other states follow the federal rule: if you owe federal tax on your SSDI, you owe state tax too. But some states have their own thresholds or rules. For example, some states do not count SSDI as income for state tax purposes even if the federal government does. Others tax it only if your total income exceeds a higher threshold than the federal one.
You need to check your state's tax agency website or contact them directly to learn your state's specific rule. The state tax authority can tell you whether SSDI is taxable in your state and at what income level.
What to do if you think you owe tax
If your combined income exceeds the threshold, you have three options: file a tax return and pay the tax owed, have Social Security withhold taxes from your benefit payment, or do both.
To request tax withholding, fill out Form W-4V and send it to Social Security. You can choose to have 7, 10, 12, or 22 percent of your monthly benefit withheld. This does not change how much tax you owe — it just spreads the payment across the year instead of paying it all at once when you file. Many people find this easier than writing a large check in April.
You can also file a tax return without withholding and pay the full amount when you file. If you use tax software or a tax professional, they will calculate the amount for you using your SSA-1099 and your other income.
If your income changes during the year
Your tax situation can change if you start working, stop working, or receive a bonus or inheritance. If you think you will cross the income threshold this year, you can request withholding at any time by submitting Form W-4V to Social Security.
If you requested withholding but your income ended up lower than expected, you may have overpaid tax. When you file your return, the IRS will refund the difference. If you did not request withholding and your income was lower than you thought, you may not owe tax at all — again, the return will show this.
Keep track of any income changes and update your withholding request if needed. Social Security can tell you how to adjust your withholding by phone at 1-800-772-1213.
Frequently Asked Questions
Do I have to file a tax return if I only receive SSDI?
Only if your combined income exceeds $25,000 (single) or $32,000 (married filing jointly). If your only income is SSDI below those thresholds, you do not have to file. However, if you had taxes withheld, you may want to file to get a refund.
What counts as income for the SSDI tax calculation?
Wages, self-employment income, interest, dividends, rental income, and certain other sources all count. Tax-exempt interest also counts, even though it does not appear on your regular tax return. Half of your SSDI itself counts toward combined income.
Can I reduce my SSDI tax by taking deductions?
No. The SSDI tax calculation uses your adjusted gross income before standard or itemized deductions. Deductions lower your overall tax bill, but they do not change whether you owe tax on your SSDI specifically.
If I work part-time, will I lose my SSDI?
Not automatically. SSDI has work incentives that let you earn money without losing benefits. But earning income can trigger SSDI tax. These are separate issues — you need to check both your work incentive status and your tax liability.
What if I disagree with the amount on my SSA-1099?
Contact Social Security to report the error. You can call 1-800-772-1213, use your my Social Security account, or visit a local office. Social Security will investigate and send you a corrected form if needed. Keep the original and corrected forms together when you file.