SSDI payments may or may not be taxed, depending on your total income for the year

Whether you owe federal income tax on your Social Security Disability Insurance (SSDI) payments depends on how much other income you have. If SSDI is your only income, you typically owe no tax. If you have income from work, pensions, investments, or other sources, part of your SSDI may become taxable.

The IRS uses a formula called "combined income" to decide this. Combined income includes your SSDI payments plus half of those payments, plus any other income you report. If your combined income exceeds a certain threshold, you may owe tax on up to 50% or 85% of your SSDI benefits.

The thresholds are the same for everyone and do not change year to year. For a single filer, the first threshold is $25,000. For married couples filing jointly, it is $32,000. These amounts have stayed the same since 1984.

Key Takeaways

  • SSDI is only taxed if your combined income (SSDI plus other income) exceeds $25,000 for single filers or $32,000 for married couples filing jointly.
  • Combined income includes half of your SSDI payments plus all other income: wages, self-employment earnings, interest, dividends, pensions, and rental income.
  • If you owe tax on SSDI, you can arrange to have it withheld from your monthly payment or pay estimated tax quarterly.
  • You must file a tax return to report SSDI income, even if no tax is owed, if your combined income exceeds the threshold.

How the IRS calculates whether your SSDI is taxed

The IRS starts by adding up your "combined income." This is not the same as your gross income. Combined income = your SSDI for the year + half of your SSDI + all other income you received.

For example: You received $12,000 in SSDI and earned $20,000 from part-time work. Your combined income is $12,000 + $6,000 (half of SSDI) + $20,000 = $38,000. Since $38,000 exceeds $25,000, some of your SSDI is taxable.

Once you know your combined income, the IRS applies the thresholds. If your combined income is between $25,000 and $34,000 (single) or $32,000 and $44,000 (married filing jointly), up to 50% of your SSDI may be taxed. If your combined income exceeds $34,000 (single) or $44,000 (married), up to 85% of your SSDI may be taxed.

The actual amount taxed is the lesser of: (1) the percentage of SSDI calculated by the formula, or (2) the amount of tax you would owe on that income at your tax bracket. This means the tax owed is usually less than the maximum percentage.

What counts as income for the combined income calculation

Combined income includes almost all money you receive, with a few exceptions. Wages from work, self-employment income, interest, dividends, capital gains, rental income, and pension payments all count.

Some income does not count: Supplemental Security Income (SSI) is excluded. Veterans' benefits are excluded. Certain railroad retirement benefits are excluded. Gifts and inheritances do not count. Loans do not count. Refunds of taxes you paid do not count.

If you are married filing jointly, your spouse's income counts toward the threshold too, even if your spouse does not receive SSDI. This can push a couple over the threshold even if each person's individual income would not.

How to arrange tax withholding on SSDI payments

If you expect to owe tax on your SSDI, you can ask Social Security to withhold federal income tax from your monthly payment. This is voluntary—you do not have to do it, but it can make filing easier.

To set up withholding, complete Form W-4V (Voluntary Withholding Request) and send it to your local Social Security office or mail it to Social Security. You can choose to have 7%, 10%, 15%, or 25% of your monthly benefit withheld. You can change or stop withholding at any time by submitting a new form.

If you do not set up withholding, you may need to pay estimated tax quarterly using Form 1040-ES. This means sending the IRS a payment four times a year instead of once at tax time. Your tax preparer or the IRS website can help you calculate what to send.

Filing a tax return when you receive SSDI

You must file a federal tax return if your combined income exceeds the threshold for your filing status, even if no tax is owed. Social Security sends you a Form SSA-1099 each January showing how much SSDI you received the previous year. You include this on your return.

If your combined income is below the threshold, you do not have to file a return. However, if you had federal income tax withheld from your SSDI or from other income, you may want to file anyway to get a refund.

State income tax is a separate question. Some states tax SSDI the same way the federal government does. Other states do not tax SSDI at all. A few states tax it only if you are over a certain age. Check your state's tax agency website or ask a tax preparer what applies to you.

What happens if you do not report SSDI income on your tax return

Social Security reports your SSDI payments to the IRS on Form SSA-1099. The IRS matches this against the tax returns it receives. If you should have filed a return but did not, the IRS may contact you to file one.

If you owed tax and did not pay it, you may face penalties and interest. The penalty for not filing is usually 5% of the unpaid tax per month, up to 25%. Interest accrues daily on any unpaid tax. If the IRS believes you intentionally did not report income, the penalties can be much higher.

If you missed filing in a previous year, you can still file that return now. The IRS generally allows you to go back three years to claim a refund, but you can file older returns too. A tax preparer or the IRS can help you catch up.

Frequently Asked Questions

If I work part-time, will my SSDI be taxed?

Only if your combined income exceeds the threshold. Combined income includes half your SSDI plus your wages. If you earn $15,000 and receive $12,000 in SSDI, your combined income is $33,000—over the $25,000 threshold for single filers—so some SSDI becomes taxable. If you earn $5,000, your combined income is $23,000, so no SSDI is taxed.

Do I have to pay tax on SSDI if I am retired?

Only if your combined income exceeds the threshold. Retirement income from pensions, 401(k) withdrawals, or traditional IRAs counts toward combined income. If you receive a pension and SSDI but no other income, you may or may not owe tax depending on the pension amount. Social Security does not tax SSDI differently based on age.

What if I am married and my spouse does not receive SSDI?

Your spouse's income still counts toward the $32,000 threshold if you file jointly. If your spouse earns $20,000 and you receive $12,000 in SSDI, your combined income is $32,000—exactly at the threshold—so some of your SSDI becomes taxable. Filing separately may lower the tax owed, but the rules are complex; a tax preparer can advise you.

Can I reduce my SSDI tax by earning less money?

Yes. If you are close to the threshold, earning slightly less could keep your combined income below it and eliminate SSDI tax entirely. However, earning less also means less total income, so the trade-off may not be worth it. A tax preparer can show you the numbers for your situation.

What if I received SSDI retroactively and now owe a large tax bill?

Retroactive SSDI—payments for months before you applied—counts as income in the year you receive it, not the years it covers. This can push you over the threshold and create a large tax bill in one year. You may be able to use special tax rules for lump-sum income, or you can set up a payment plan with the IRS if you cannot pay in full.