When you have to pay tax on SSDI

You pay federal income tax on SSDI only if your total income crosses a threshold that depends on your filing status and other income sources. The Social Security Administration does not automatically withhold taxes from your SSDI payment, so if you owe tax, you have to handle it yourself — either by making quarterly payments or by filing a return at the end of the year.

The threshold is low enough that many people receiving SSDI do not owe tax at all. But if you have other income — wages from work, interest, pensions, or unemployment benefits — the combination can push you over the line. The IRS calls the income that counts toward this threshold your "combined income," and it includes half of your SSDI benefit plus all your other income.

State and local taxes work differently. Most states do not tax SSDI at all. A few states tax it the same way the federal government does. You can find out whether your state taxes SSDI by contacting your state tax authority or checking your state's tax website.

Key Takeaways

  • You owe federal tax on SSDI only if your combined income (half your SSDI benefit plus all other income) exceeds $25,000 if you file single, or $32,000 if you file jointly.
  • The Social Security Administration does not withhold tax from SSDI payments, so you must pay it yourself through quarterly estimated tax payments or when you file your annual return.
  • Most states do not tax SSDI, but a small number do — check with your state tax authority to know whether you owe state tax.
  • If you have other income sources like wages or pensions, you are more likely to owe federal tax on your SSDI.

How the IRS calculates taxable SSDI

The IRS uses a formula that includes only part of your SSDI benefit. You take half of what you received in SSDI during the year, add it to all your other income (wages, interest, pensions, rental income, and so on), and that sum is your combined income. Then you compare it to a base amount that depends on your filing status.

If you file as single and your combined income is under $25,000, none of your SSDI is taxable. If it is between $25,000 and $34,000, up to 50 percent of your SSDI becomes taxable. If it is over $34,000, up to 85 percent of your SSDI becomes taxable. The math is more complex than it sounds — the IRS has a worksheet in Publication 915 that walks you through it — but the point is that the higher your other income, the more of your SSDI the IRS can tax.

If you file jointly with a spouse, the base amounts are higher: $32,000 and $44,000. If you are married filing separately, the rules are much stricter and almost always result in taxation.

What counts as "other income" for SSDI tax purposes

Other income includes wages from any job, self-employment income, interest and dividends, rental income, pensions, annuities, unemployment benefits, and taxable scholarships. It does not include Supplemental Security Income (SSI), which is a separate program, or certain veterans' benefits.

Some income sources are partially taxable. For example, if you receive a pension from a job where you did not pay Social Security tax, part of that pension counts as other income. If you are unsure whether a particular income source counts, the IRS Publication 915 lists the details, or you can ask a tax professional.

Work incentive programs that allow SSDI recipients to earn wages while keeping their benefits can push you over the combined income threshold. If you are working and receiving SSDI, it is worth calculating your combined income before the end of the year so you are not surprised at tax time.

How to pay SSDI taxes

If you owe tax on your SSDI, you have two main options. You can file a federal income tax return (Form 1040) at the end of the year and pay the tax you owe, just as you would for any other income. Or, if you expect to owe a large amount, you can make quarterly estimated tax payments to the IRS throughout the year.

The Social Security Administration will not withhold tax from your SSDI payment unless you ask them to. You can request withholding by filling out Form W-4V and submitting it to your local Social Security office. If you choose withholding, you can have 7, 10, 15, or 25 percent of your monthly benefit withheld. This is often simpler than making quarterly payments, because the money comes out automatically and you do not have to remember to send it in.

If you do not withhold and do not make quarterly payments, you may owe a penalty when you file your return, even if you ultimately pay the tax you owe. The IRS charges penalties for underpayment of estimated tax, so it is better to pay as you go.

SSDI and Medicare premiums

Your SSDI income can affect what you pay for Medicare Part B and Part D (prescription drug coverage) if you are enrolled. The IRS uses your modified adjusted gross income from two years prior to set your premium. If your income was high two years ago, your premium will be higher now, even if your income has dropped since then.

This is called an Income-Related Monthly Adjustment Amount, or IRMAA. It applies only if your income exceeds certain thresholds, which change each year. If your income has dropped significantly — because you stopped working, for example — you can ask Medicare to recalculate your premium based on your current income.

Keeping records for tax time

The Social Security Administration sends you a Form SSA-1099 each January showing how much SSDI you received in the previous year. Keep this form with your tax records. You will need it to fill out your tax return or to give to a tax professional.

If you have other income sources, gather the forms they send you as well: W-2s from employers, 1099s from banks or investment accounts, and so on. Having all these forms in one place makes it easier to calculate your combined income and determine whether you owe tax.

If you are unsure whether you owe tax or how much, a tax professional or a volunteer tax preparer can help you work through the calculation. Many communities offer free tax preparation through programs like VITA (Volunteer Income Tax information), which serves people with low to moderate income.

What happens if you do not pay SSDI taxes

If you owe tax and do not pay it, the IRS can take action. They may offset your tax refund, place a lien on your property, or garnish your wages if you are working. They can also charge penalties and interest on the unpaid amount.

If you cannot pay the full amount you owe, you have options. You can set up a payment plan with the IRS, request an offer in compromise (a settlement for less than you owe), or ask for a temporary delay if you are facing financial hardship. The IRS has a payment plan tool on its website where you can see what options are available to you.

Frequently Asked Questions

Do I have to file a tax return if I only receive SSDI?

Not necessarily. If SSDI is your only income and your combined income is below the threshold for your filing status ($25,000 for single filers), you do not have to file. But if you have other income or if you had taxes withheld, filing may get you a refund.

Can I have taxes withheld from my SSDI check?

Yes. Fill out Form W-4V and submit it to your local Social Security office. You can choose to have 7, 10, 15, or 25 percent of your monthly benefit withheld. This is often easier than making quarterly estimated tax payments.

Does my spouse's income count toward the SSDI tax threshold?

Only if you file jointly. If you file jointly, you combine both your incomes to calculate your combined income. If you file separately, only your income counts, but the rules are much stricter and almost always result in taxation.

What if my income changes during the year?

If your income drops significantly — because you stopped working or lost a job — you can ask the IRS to recalculate your estimated tax payments. You can also adjust your withholding on Form W-4V if you are having taxes withheld from your SSDI.

Is there a way to reduce the amount of SSDI that gets taxed?

The main way is to reduce your other income. If you are working, earning less would lower your combined income and potentially move you below the tax threshold. Some work incentive programs are designed to help with this, but the rules are complex and depend on your situation.