Whether Your SSDI Is Taxable Depends on Your Other Income

Social Security Disability Insurance (SSDI) may or may not be taxable, depending on how much other income you have. The IRS uses a formula called combined income to decide. If your combined income stays below a certain threshold, your SSDI is not taxed. If it goes above that threshold, a portion of your SSDI becomes taxable income on your federal return.

Combined income is calculated as your adjusted gross income plus nontaxable interest plus half of your SSDI benefits. The thresholds are $25,000 for single filers and $32,000 for married couples filing jointly. These thresholds have not changed since 1984 and do not adjust for inflation each year.

The taxable portion of your SSDI is never more than 85 percent of your benefits, even if your combined income is very high. Most people with SSDI do not owe federal tax on their benefits because their other income is low enough to stay under the threshold.

Key Takeaways

  • Your SSDI is taxed only if your combined income (adjusted gross income plus half your SSDI) exceeds $25,000 for single filers or $32,000 for married couples filing jointly.
  • Combined income includes wages, self-employment income, interest, dividends, and certain other sources, but not Supplemental Security Income (SSI).
  • If you are over the threshold, between 50 and 85 percent of your SSDI becomes taxable, depending on how far over you are.
  • You must file a federal tax return to report SSDI income if you are required to file for any other reason, even if none of your SSDI is taxable.
  • Some states tax SSDI, while others do not; your state's rules are separate from federal rules.

How the IRS Calculates Combined Income

The IRS starts with your adjusted gross income (AGI), which is your total income minus certain deductions. AGI includes wages from work, net self-employment income, interest, dividends, capital gains, rental income, and income from pensions or annuities. It does not include Supplemental Security Income (SSI), which is a separate needs-based program.

To your AGI, the IRS adds back any nontaxable interest you received—mainly interest from municipal bonds. Then it adds half of your SSDI benefits for the year. That total is your combined income. The IRS uses this figure, not your actual SSDI amount, to determine whether any of your benefits are taxed.

Example: You are single and received $15,000 in SSDI for the year. You also earned $18,000 in wages and received $500 in nontaxable interest. Your combined income is $18,000 (wages) plus $500 (nontaxable interest) plus $7,500 (half of $15,000 SSDI) = $26,000. Because $26,000 exceeds the $25,000 threshold by $1,000, some of your SSDI is taxable.

The Two-Tier Tax Formula for SSDI

Once your combined income exceeds the threshold, the IRS uses a two-tier system to determine how much of your SSDI is taxable. The amount depends on how far over the threshold you are.

Tier One applies to the first $9,000 over the threshold (for single filers) or $12,000 (for married couples filing jointly). For every dollar over the threshold in this range, up to 50 percent of your SSDI becomes taxable. You pay tax on the lesser of (a) 50 percent of the excess over the threshold, or (b) 50 percent of your total SSDI benefits.

Tier Two applies to combined income above $34,000 (single) or $44,000 (married filing jointly). For every dollar over these higher thresholds, up to 85 percent of your SSDI becomes taxable. You pay tax on the lesser of (a) 85 percent of the excess over the higher threshold plus any Tier One amount, or (b) 85 percent of your total SSDI benefits.

The maximum taxable portion is always 85 percent of your benefits, regardless of how high your combined income climbs. This cap means that even high earners do not lose all of their SSDI to taxation.

What Income Counts Toward the Combined Income Threshold

Several types of income count toward your combined income and can push you over the threshold. Wages from employment count in full. Self-employment income counts as your net profit after business expenses. Interest and dividend income count, including interest from savings accounts and certificates of deposit.

Capital gains from the sale of stocks, real estate, or other assets count. Rental income and royalties count. Distributions from retirement accounts—including traditional IRAs, 401(k)s, and pensions—count as income in the year you receive them. Taxable annuity payments count. Income from a business you own counts.

Income that does not count includes Supplemental Security Income (SSI), which is a separate federal program for people with low income and few resources. Veterans' benefits do not count. Workers' compensation does not count. Gifts do not count. Inheritances do not count. The return of your own principal or contributions does not count.

Filing Requirements When You Receive SSDI

You must file a federal income tax return if you are required to file for any reason—such as having wages or self-employment income—even if none of your SSDI is taxable. The Social Security Administration sends you a Form SSA-1099 each January showing the SSDI you received in the prior year. You use this form to report your benefits on your tax return.

If you do not have other income and your SSDI is not taxable, you are generally not required to file a federal return. However, filing may still benefit you if you are may have access to to a refundable tax credit, such as the Earned Income Tax Credit (EITC) or the Additional Child Tax Credit. A tax professional or free tax preparation service can help you determine whether filing is worth your time.

You report your SSDI on Form 1040 (the main federal income tax form) or Form 1040-SR if you are 65 or older. The instructions for these forms include a worksheet to calculate how much of your SSDI is taxable. Many tax software programs calculate this automatically if you enter your SSA-1099 information.

State Income Tax on SSDI

Thirteen states tax SSDI benefits: Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, Vermont, and West Virginia. The remaining states do not tax SSDI. Your state's rules are completely separate from federal rules, so you may owe state tax on SSDI even if you owe no federal tax, or vice versa.

Each state that taxes SSDI uses its own income thresholds and formulas. Some states follow the federal combined income approach; others use different calculations. A few states exempt SSDI entirely for people over a certain age or with income below a certain level. You should check your state's tax agency website or contact them directly to learn how your SSDI is treated under state law.

If you live in a state that taxes SSDI, you will need to file a state income tax return in addition to your federal return. Your state return will ask for information about your SSDI, and you will use your SSA-1099 form to report it.

Withholding and Estimated Tax Payments

The Social Security Administration does not withhold federal income tax from SSDI payments automatically. If you know that some of your SSDI will be taxable, you can request voluntary withholding by completing Form W-4V and sending it to your local Social Security office. You choose the withholding amount, and Social Security deducts it from your monthly benefit.

Alternatively, you can make estimated tax payments directly to the IRS if you prefer not to reduce your monthly benefit. Estimated payments are due four times per year: April 15, June 15, September 15, and January 15. You use Form 1040-ES to calculate and submit estimated payments.

Many people find it simpler to request withholding from their SSDI check rather than manage quarterly estimated payments. If you request withholding, Social Security will send you a Form W-2V in January showing the amount withheld, which you report on your tax return.

Frequently Asked Questions

Can I reduce my taxable SSDI by reducing my other income?

Yes. Because combined income determines whether your SSDI is taxed, lowering your wages, investment income, or retirement account withdrawals can move you below the threshold. For example, delaying a retirement account withdrawal or reducing hours at work may lower your combined income enough to avoid SSDI taxation. A tax professional can model different income scenarios to show you the effect.

Does working part-time while on SSDI affect my taxes?

Yes. Wages from part-time work count toward your combined income and can push you over the threshold, making your SSDI taxable. However, SSDI has a separate work incentive program (called Plan to Achieve Self-Support, or PASS) that may allow you to exclude some work income when calculating your SSDI benefit amount itself. The tax treatment and the benefit calculation are different, so consult both Social Security and a tax professional.

What if I receive both SSDI and SSI?

SSI (Supplemental Security Income) is never taxable and does not count toward the combined income threshold for SSDI taxation. Only your SSDI portion is subject to the tax rules described here. You will receive separate SSA-1099 forms for SSDI and SSI, and only the SSDI amount is reported on your tax return.

Do I have to pay taxes on SSDI if I live outside the United States?

Yes, if you are a U.S. citizen or resident alien, you must report SSDI on your federal return regardless of where you live. The combined income thresholds and tax formulas are the same. You may also owe tax to the country where you reside, depending on that country's laws and any tax treaty between the U.S. and that country.

What happens if I do not report taxable SSDI on my return?

The IRS receives a copy of your SSA-1099 and can match it against your tax return. If you do not report taxable SSDI, the IRS may send you a notice of underreported income and assess penalties and interest. Filing accurately and on time avoids these consequences and is required by law.