Whether your SSDI is taxable depends on your total income, not just the benefit amount

Social Security Disability Insurance (SSDI) benefits may or may not be taxable income on your federal tax return. The Social Security Administration does not automatically withhold taxes from your benefit payments, so you might owe taxes at the end of the year even though you received no tax withholding. Whether you actually owe depends on how much other income you have and your filing status.

The IRS uses a formula called "combined income" to decide if your benefits are taxable. Combined income includes your adjusted gross income, nontaxable interest, and half of your SSDI benefits. If your combined income exceeds a certain threshold — which varies by filing status — a portion of your benefits becomes taxable income.

Key Takeaways

  • SSDI benefits become taxable only if your combined income (wages, interest, other benefits, plus half your SSDI) exceeds a threshold that depends on whether you file single or jointly.
  • The IRS does not withhold taxes from SSDI payments, so you may need to pay estimated taxes quarterly or request voluntary withholding from your benefit check.
  • If you have little or no other income besides SSDI, your benefits are usually not taxable.
  • You can request that the Social Security Administration withhold federal income tax from your monthly benefit payment using Form W-4V.

How the IRS calculates whether your SSDI is taxable

The IRS looks at your combined income, which is calculated as your adjusted gross income plus nontaxable interest plus half of your SSDI benefits for the year. This combined income figure is what determines whether any of your SSDI is taxable — not your SSDI amount alone.

The threshold amounts are set by filing status. If you file as single and your combined income is between $25,000 and $34,000, up to 50 percent of your benefits may be taxable. If your combined income exceeds $34,000, up to 85 percent of your benefits may be taxable. If you file as married filing jointly, the thresholds are $32,000 and $44,000. If your combined income is below the lower threshold for your filing status, none of your SSDI is taxable.

These threshold amounts have not changed since 1984, so they affect more people now than they did when they were first set. The actual amount of your benefits that becomes taxable is calculated using a worksheet in the IRS instructions for Form 1040, or you can use IRS Publication 915 to work through the calculation yourself.

What counts as income for this calculation

Combined income includes wages from work, self-employment income, pensions, interest and dividends, rental income, and income from other sources. It also includes other Social Security benefits you receive, such as retirement benefits or spousal benefits. Nontaxable interest — such as interest from municipal bonds — is also counted, even though it is not taxable on your return.

Some income does not count toward combined income. For example, Supplemental Security Income (SSI) is not included in the combined income calculation. Veterans' benefits, workers' compensation, and certain other payments are also excluded. If you are unsure whether a particular income source counts, you can check IRS Publication 915 or contact the IRS directly.

Requesting tax withholding from your SSDI payments

If you expect to owe taxes on your SSDI, you can ask the Social Security Administration to withhold federal income tax from your monthly benefit payment. You do this by completing Form W-4V (Voluntary Withholding Request) and submitting it to your local Social Security office or mailing it to the address on the form.

On Form W-4V, you choose a withholding rate: 7 percent, 10 percent, 15 percent, or 25 percent of your monthly benefit. The Social Security Administration will then withhold that amount from each payment and send it to the IRS on your behalf. This withholding is voluntary, and you can change or stop it at any time by submitting a new Form W-4V.

Withholding is not the same as paying your full tax bill — it is just money held back from your benefit to cover part of what you may owe. You still need to file a tax return if your income requires it, and you may owe additional tax or receive a refund depending on how much was withheld.

Filing a tax return when you receive SSDI

You must file a federal income tax return if your income meets the IRS filing threshold for your age and filing status. Even if your SSDI is not taxable, you may still be required to file if you have other income, such as wages or self-employment income. The IRS filing thresholds change each year, so check the current year's instructions for Form 1040 to see whether you must file.

When you file, you report your SSDI on line 5b of Form 1040 (or the equivalent line on your form). You also report any other income you received during the year. The IRS will use the combined income formula to determine whether any of your SSDI is taxable and calculate the taxable amount for you.

If you did not have taxes withheld from your SSDI and you expect to owe taxes, you may need to make estimated tax payments to the IRS during the year. Estimated taxes are paid quarterly, usually on April 15, June 15, September 15, and January 15. You can use Form 1040-ES to calculate your estimated tax and learn how to pay.

What happens if you do not pay taxes owed on SSDI

If you owe taxes on your SSDI and do not pay, the IRS can charge penalties and interest on the unpaid amount. The failure-to-pay penalty is typically 0.5 percent of your unpaid taxes for each month the tax remains unpaid. Interest is charged daily on the unpaid tax and penalties.

If you cannot pay the full amount you owe, you have options. You can request a payment plan (called an installment agreement) with the IRS, which allows you to pay your tax debt over time. You can also request an offer in compromise if you cannot pay the full amount and have limited ability to pay. The IRS website (irs.gov) has information about these options, or you can call the IRS at 1-800-829-1040.

Frequently Asked Questions

If I have no other income besides SSDI, do I have to pay taxes on it?

No. If your only income is SSDI and you have no other income sources, your combined income will be below the threshold for your filing status, and none of your SSDI will be taxable. You would not owe federal income tax on your benefits in this situation.

Does the Social Security Administration send me a tax form for my SSDI?

Yes. The Social Security Administration sends Form SSA-1099 (Social Security Benefit Statement) to you by January 31 each year. This form shows the total SSDI you received during the previous year. You use this amount when calculating your combined income to determine if your benefits are taxable.

Can I change my tax withholding if my income changes during the year?

Yes. You can submit a new Form W-4V to the Social Security Administration at any time to change your withholding rate or stop withholding altogether. Changes usually take effect within one or two months. If your income changes significantly, you may want to adjust your withholding to avoid owing a large amount at tax time.

What if I am married and my spouse also receives SSDI?

If you file a joint tax return, the combined income calculation includes both your SSDI and your spouse's SSDI, plus any other income either of you received. The threshold for married filing jointly is higher than for single filers, but you are still subject to the same rules about when SSDI becomes taxable.

Do state taxes explore to SSDI?

Most states do not tax SSDI benefits. However, a few states do tax Social Security benefits under certain circumstances. Check your state's tax agency website or contact them directly to find out whether your state taxes SSDI. If your state does tax it, you may need to file a state income tax return and pay state tax on your benefits.