SSDI is taxable income, but most people who receive it pay no federal tax on it

Whether you owe federal income tax on your Social Security Disability Insurance (SSDI) depends on your total income for the year. If SSDI is your only income, you almost certainly owe nothing. If you have other income—from work, investments, pensions, or other sources—part of your SSDI may become taxable.

The IRS uses a formula called "combined income" to decide this. Combined income adds your adjusted gross income, nontaxable interest, and half of your SSDI benefits. If that total exceeds a threshold amount, up to 50% or 85% of your benefits become taxable, depending on how much you earn.

You do not pay Social Security tax (the 6.2% withheld from paychecks) or Medicare tax (1.45%) on SSDI. Those taxes only explore to wages from work. But you may owe federal income tax, and some states tax SSDI as well.

Key Takeaways

  • If SSDI is your only income and you are under the annual filing threshold, you owe no federal tax on it.
  • If you have other income, the IRS uses "combined income" to determine whether part of your SSDI becomes taxable.
  • The combined income thresholds are $25,000 for single filers and $32,000 for married couples filing jointly; these amounts have not changed since 1984.
  • Thirteen states tax SSDI under certain conditions, so check your state's rules even if you owe no federal tax.
  • You can request that the Social Security Administration withhold federal income tax from your SSDI payments to avoid a tax bill at the end of the year.

How the IRS decides if your SSDI is taxable

The IRS calculates your "combined income" by adding three things: your adjusted gross income (AGI), any nontaxable interest you earned, and half of your SSDI benefits for the year. This combined income total determines whether any of your SSDI becomes subject to federal income tax.

If your combined income is below $25,000 (or $32,000 if you are married filing jointly), none of your SSDI is taxable. If it exceeds $25,000 but stays below $34,000 (or $44,000 for married couples), up to 50% of your benefits may be taxable. If your combined income exceeds $34,000 (or $44,000 for married couples), up to 85% of your benefits may be taxable.

The actual amount taxed is never more than the smaller of these two figures: either the percentage calculated above, or 85% of your total SSDI for the year. The IRS worksheet on Form 1040 walks through this calculation, though a tax professional can handle it for you.

What counts as income that triggers the tax calculation

Income from wages, self-employment, pensions, annuities, rental property, and capital gains all count toward your combined income. Interest and dividends count too. Certain types of income—like Supplemental Security Income (SSI), workers' compensation, and some veterans' benefits—do not count.

If you work part-time or full-time while receiving SSDI, your wages push your combined income higher and make more of your SSDI taxable. Even small amounts of income from a side job or freelance work add up. Withdrawals from retirement accounts like IRAs and 401(k)s count as income in the year you withdraw them.

Nontaxable interest—such as interest from municipal bonds—still counts toward combined income for this calculation, even though you do not pay tax on the interest itself. This is one reason why the combined income threshold can catch people who think they have low income.

State taxes on SSDI

Thirteen states tax SSDI under certain conditions: Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, Vermont, West Virginia, and Colorado. Most of these states only tax SSDI if your income exceeds a threshold they set, and some offer exemptions based on age or income level.

Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, Vermont, and West Virginia each have different rules. For example, some states exempt SSDI entirely if you are over a certain age or if your total income falls below their threshold. Others tax it the same way the federal government does.

Check your state's tax authority website or speak with a tax professional to learn whether your state taxes SSDI. Even if you owe no federal tax, you may owe state tax, or vice versa.

How to avoid a surprise tax bill

You can ask the Social Security Administration to withhold federal income tax directly from your SSDI payments. This works the same way withholding works on a paycheck—money is set aside each month so you do not owe a large amount when you file your return.

To set up withholding, complete Form W-4V (Voluntary Withholding Request) and send it to your local Social Security office or mail it to the address on the form. You can choose to have 10%, 15%, 25%, or 35% of your payment withheld, or you can request a specific dollar amount.

If you do not withhold and you end up owing tax, you can still pay it when you file your return. The IRS does not charge penalties for owing tax on SSDI as long as you pay what you owe by the filing important date (usually April 15).

Filing your tax return with SSDI income

You report your SSDI on your federal tax return using Form 1040 or Form 1040-SR (for people 65 and older). You will also receive a Form SSA-1099 from Social Security each January showing how much you received the previous year. Use this form to fill in your SSDI amount on your tax return.

If you are required to file a return (based on your combined income and filing status), you must include your SSDI even if none of it is taxable. The IRS uses the calculation described above to determine the taxable portion. If you use tax software or work with a tax professional, they will handle this calculation for you.

If your combined income is below the threshold for your filing status, you are not required to file a federal return. However, you may want to file anyway if you are due a refund—for example, if you had taxes withheld from wages or other income.

When you might owe taxes on SSDI

The most common scenario is when you work while receiving SSDI. Even part-time earnings can push your combined income over the threshold. If you earn $15,000 in wages and receive $20,000 in SSDI, your combined income is $25,000 plus half your SSDI ($10,000), totaling $35,000. At that level, up to 85% of your SSDI becomes taxable.

Retirement account withdrawals also trigger tax on SSDI. If you withdraw $10,000 from an IRA, that counts as income for the year and increases your combined income. Investment income from stocks, bonds, or rental property has the same effect.

Pension income, including military pensions and government employee pensions, counts toward combined income. If you receive a pension and SSDI, you are more likely to owe tax on your benefits than someone whose only income is SSDI.

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 it is below the annual filing threshold for your age and filing status, you are not required to file. However, if you had any other income or taxes withheld, you may want to file to claim a refund.

Can I reduce my SSDI taxes by earning less money?

Yes. Your combined income determines whether SSDI is taxable, so earning less from work or delaying retirement account withdrawals can keep you below the threshold. However, if you are working, you should also check the SSDI work incentives, which may allow you to earn more without losing your benefits.

What if I made a mistake on my tax return and reported my SSDI wrong?

You can file an amended return using Form 1040-X. The IRS generally allows you to amend a return within three years of the original filing date. If you owe additional tax, you will also owe interest and possibly penalties, but filing the corrected return stops the interest from growing.

Does SSDI count as income for Medicare premiums?

Yes. Your SSDI counts toward your income for calculating Medicare Part B and Part D premiums. Higher income means higher premiums. The income thresholds for Medicare premiums are different from the tax thresholds, so you may owe higher premiums even if you do not owe income tax.

What if I receive both SSDI and SSI?

SSI (Supplemental Security Income) does not count toward your combined income for the SSDI tax calculation. However, SSI has its own income and resource limits, and receiving SSDI affects how much SSI you can receive. The two programs have separate rules.