Most SSDI recipients pay no federal income tax on their benefits
Whether you owe federal income tax on your SSDI depends on your combined income—not just what you receive from Social Security. If SSDI is your only income source, you almost certainly owe nothing. But if you also earn wages, have investment income, or receive other benefits, you may owe tax on a portion of your SSDI.
The IRS uses a formula called the "combined income test" to determine how much of your benefit is taxable. Combined income includes your adjusted gross income, nontaxable interest, and half of your SSDI benefit. Once your combined income exceeds a threshold—$25,000 for a single filer, $32,000 for married filing jointly—the IRS taxes up to 85 percent of your SSDI in the worst case, though most people pay tax on far less.
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 only if your total income exceeds a higher threshold. You need to check your state's rules directly, because they vary widely.
Key Takeaways
- If SSDI is your only income, you owe no federal tax on it, even if you receive the maximum monthly benefit.
- If you have other income—wages, pensions, interest, or other Social Security benefits—you may owe tax on part of your SSDI using the combined income formula.
- The IRS will not automatically withhold tax from your SSDI check; you must request withholding or pay estimated tax quarterly if you expect to owe.
- State tax treatment of SSDI varies: some states tax it, some do not, and some use different thresholds than the federal government.
How the combined income test works
The combined income formula is the key to understanding whether you owe tax. Start by adding three things: your adjusted gross income (wages, self-employment income, taxable pensions, and taxable interest), plus any nontaxable interest (such as interest from municipal bonds), plus half of your SSDI benefit for the year.
Once you have that total, compare it to the IRS thresholds. For a single filer, the first threshold is $25,000. For married filing jointly, it is $32,000. For married filing separately, it is $0—meaning any combined income at all can trigger taxation.
If your combined income falls below the threshold for your filing status, you owe no federal tax on your SSDI. If it exceeds the threshold, the IRS taxes up to 50 percent of your SSDI on the amount between the first and second threshold ($34,000 for single filers, $44,000 for married filing jointly). If combined income exceeds the second threshold, up to 85 percent of your SSDI becomes taxable, though the total taxable amount is capped at the lesser of 85 percent of your benefit or a formula-based limit.
This is complex enough that the IRS publishes a worksheet in Publication 915 to walk you through it. Many tax preparers use software that calculates it automatically.
When you must withhold tax or pay estimated amounts
The Social Security Administration does not automatically withhold federal income tax from SSDI checks the way employers withhold from paychecks. If you expect to owe tax, you have two options: request voluntary withholding, or pay estimated tax quarterly.
To request withholding, fill out Form W-4V and send it to your local Social Security office or mail it to the address on the back of the form. You can request that 7, 10, 12, or 22 percent of your monthly benefit be withheld. This is the simpler route if you want the IRS to take the money directly from your check each month.
If withholding is not enough—for example, if you have significant wage income in addition to SSDI—you can pay estimated tax quarterly using Form 1040-ES. Estimated payments are due April 15, June 15, September 15, and January 15. Missing a payment can result in penalties, even if you end up owing nothing overall.
Many people find it easier to request withholding on Form W-4V and then adjust it each year based on what they actually owe when they file their tax return.
State income tax on SSDI
Thirteen states do not tax income at all: Alaska, Florida, Nevada, South Dakota, Tennessee, Texas, Washington, and Wyoming have no income tax. New Hampshire and Tennessee tax only interest and dividend income, not wages or SSDI. The remaining states tax SSDI under their own rules, which often differ from federal rules.
Some states follow the federal combined income test closely. Others use a lower threshold or tax a higher percentage of your benefit. A few states exempt SSDI entirely even though they tax other income. Because state rules change and vary by filing status, age, and income level, you should check your state's tax authority website or ask a tax preparer familiar with your state's rules.
If you live in a state that taxes SSDI and you owe state tax, you will need to request state withholding separately from federal withholding. The process varies by state; some allow you to request it on a state form, others require you to pay estimated tax. Contact your state's department of revenue for instructions.
What counts as income for the combined income test
The combined income formula includes more than just wages. It includes taxable pensions, taxable distributions from retirement accounts, capital gains, taxable interest, and self-employment income. It also includes any other Social Security benefits you receive—retirement or survivor benefits count toward the threshold.
Some income does not count. Supplemental Security Income (SSI) is not included in the combined income calculation. Neither are veterans' benefits, workers' compensation, or certain other government payments. Nontaxable portions of pensions or retirement distributions do not count either, though nontaxable interest does.
If you are unsure whether a particular income source counts, Publication 915 lists the rules in detail. Your tax preparer can also clarify what belongs in the calculation for your specific situation.
Filing your tax return when you receive SSDI
You will receive a Form SSA-1099 from Social Security by January 31 each year showing the total SSDI you received in the previous year. This is the amount you use in the combined income formula and on your tax return.
When you file, you report your SSDI on line 5b of Form 1040 (or the equivalent line on your state return). You also complete the worksheet in Publication 915 to determine how much, if any, is taxable. The taxable portion goes on line 5c of Form 1040.
If you did not request withholding and you owe tax, you will owe it when you file. If you requested withholding on Form W-4V, the amount withheld will be credited against what you owe. If you overpaid, you will receive a refund.
Frequently Asked Questions
Do I have to file a tax return if SSDI is my only income?
No. If SSDI is your only income and you have no other filing requirement, you do not have to file a federal return. However, if you have other income—even a small amount of wages or interest—you may be required to file. The IRS publishes income thresholds each year; check Publication 17 or the IRS website to see whether you must file.
Can I request withholding on Form W-4V if I am married filing jointly?
Yes. Form W-4V applies regardless of filing status. You can request withholding at 7, 10, 12, or 22 percent of your benefit. If you are married and both receive SSDI, each of you can submit a separate Form W-4V with your own withholding request.
What happens if I do not withhold enough tax and owe a large amount when I file?
You will owe the balance when you file your return. If you owe more than $1,000, you may also owe a penalty for underpayment of estimated tax. To avoid this next year, increase your withholding on Form W-4V or make quarterly estimated tax payments using Form 1040-ES.
Does receiving SSDI affect my Medicare or Medicaid?
SSDI itself does not count as income for Medicaid purposes in most states. However, if you have other income that pushes you over your state's Medicaid limit, that could affect your coverage. Contact your state Medicaid office to understand how your specific income sources affect your may be able to access.
If I owe taxes on SSDI, can I set up a payment plan with the IRS?
Yes. If you cannot pay the full amount when you file, you can request an installment agreement with the IRS. You can set one up online at IRS.gov, by phone at 1-800-829-1040, or by mail. The IRS charges a setup fee and interest on the unpaid balance, but a payment plan prevents penalties from accruing further.