Most SSDI recipients do not owe federal income tax on their benefits

Social Security Disability Insurance (SSDI) benefits are not taxable income for federal purposes in most cases. The Internal Revenue Service treats SSDI differently from wages or other income. You will not owe federal income tax on your SSDI payments unless you have substantial income from other sources.

However, the rule has a threshold. If your "combined income" — a specific calculation that includes half your SSDI plus all other income — exceeds a certain amount, a portion of your benefits becomes taxable. For 2024, that threshold is $25,000 for a single filer and $32,000 for married filing jointly. These thresholds have not changed since 1984.

State income tax is a separate question. A handful of states tax SSDI benefits, while most do not. You will need to check your state's rules, because federal non-taxation does not automatically mean state non-taxation.

Key Takeaways

  • SSDI benefits are not taxable federal income unless your combined income exceeds $25,000 (single) or $32,000 (married filing jointly).
  • Combined income includes half your SSDI plus all wages, self-employment income, interest, dividends, and other sources — but not Supplemental Security Income (SSI).
  • If you cross the threshold, only a portion of your SSDI becomes taxable, not all of it.
  • Some states tax SSDI even though the federal government does not, so you must check your state's rules separately.
  • You may still need to file a federal tax return even if you owe no tax, because other income or tax credits may require it.

How combined income is calculated

The IRS uses a formula called combined income to determine whether any of your SSDI is taxable. The formula is: half your SSDI benefits plus all other income (with some exceptions). This is not the same as your adjusted gross income on a standard tax return.

Other income includes wages from work, self-employment income, interest, dividends, capital gains, rental income, and income from pensions. It does not include Supplemental Security Income (SSI), which is a separate needs-based program. It also does not include certain excluded income like gifts or loans.

Example: You receive $1,500 per month in SSDI ($18,000 per year) and earn $10,000 from part-time work. Your combined income is ($18,000 ÷ 2) + $10,000 = $19,000. This is below the $25,000 threshold, so none of your SSDI is taxable.

If your combined income exceeds the threshold, the IRS uses a two-tier system to determine how much of your SSDI becomes taxable. The first tier applies if combined income is between $25,000 and $34,000 (single). The second tier applies if combined income exceeds $34,000. The calculation is complex, but the result is that only a portion of your benefits — never more than 85 percent — becomes taxable.

When you must file a federal tax return despite owing no tax

Even if none of your SSDI is taxable, you may still be required to file a federal tax return. The IRS has separate filing requirements based on your gross income, which includes all income sources before deductions.

You must file if your gross income from all sources exceeds the standard deduction for your filing status and age. For 2024, the standard deduction is $14,600 for a single person under 65 and $18,350 for a single person 65 or older. If you are married filing jointly, the amounts are higher.

You should also file if you have income subject to self-employment tax (net self-employment income of $400 or more), even if your total income is below the standard deduction. Additionally, you may want to file to claim the Earned Income Tax Credit (EITC) or other refundable credits, which can result in a refund even if you owe no tax.

The safest approach is to calculate your gross income from all sources and compare it to the standard deduction for your age and filing status. If you are unsure, filing does not hurt — the IRS will straightforward confirm that you owe nothing.

State income tax treatment of SSDI

Most states do not tax SSDI benefits, but a few do. The states that currently tax SSDI are Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, and Vermont. Rules and thresholds vary by state.

Some of these states use the same federal combined-income threshold, while others have their own rules. For example, Colorado taxes SSDI only if your federal adjusted gross income exceeds $20,000 (single) or $25,000 (married). Minnesota has no income threshold — it taxes all SSDI — but it allows a subtraction that can offset the tax for many recipients.

If you live in a state that taxes SSDI, you will need to file a state income tax return and report your benefits according to your state's rules. Contact your state's department of revenue or tax authority for the specific threshold and calculation method.

How to report SSDI on your federal tax return

If any portion of your SSDI is taxable, you will report it on your federal tax return using Form 1040 and Worksheet A (or Worksheet B if you are married filing separately). The IRS provides these worksheets in the instructions to Form 1040.

The Social Security Administration sends you a Form SSA-1099 each January showing the total SSDI you received in the prior year. You will use this form to complete the worksheet. The worksheet calculates your combined income and determines the taxable portion of your benefits.

You will then enter the taxable portion of your SSDI on line 5b of Form 1040. If you file electronically, tax software will usually walk you through this calculation. If you file by paper, follow the worksheet instructions carefully, as the calculation has multiple steps.

Keep your Form SSA-1099 and any worksheets with your tax records for at least three years in case the IRS asks questions.

SSDI and the Medicare premium surcharge

Your SSDI income also affects how much you pay for Medicare Part B and Part D premiums if you are enrolled in Medicare. The IRS uses a modified adjusted gross income (MAGI) calculation that includes half your SSDI plus other income sources.

If your MAGI exceeds certain thresholds, you will pay a higher premium — called an Income-Related Monthly Adjustment Amount (IRMAA). For 2024, the thresholds are $97,000 (single) and $194,000 (married filing jointly), but these are much higher than the SSDI taxation thresholds. Most SSDI recipients do not reach these levels.

However, if you have substantial other income (such as a pension, investment income, or a working spouse's wages), the IRMAA surcharge can explore. You can appeal an IRMAA information if your income has changed due to a life event such as retirement, death of a spouse, or loss of income.

Work incentives and tax treatment

If you are working while receiving SSDI, your earnings do not affect whether your SSDI is taxable. The taxation threshold is based on combined income, not on work activity. However, your work income does count toward the combined-income calculation.

Some work incentives — such as the Plan to Achieve Self-Support (PASS) and Impairment Related Work Expenses (IRWE) — can reduce your countable income for SSDI payment purposes, but they do not reduce your income for tax purposes. You must report all earned income on your tax return regardless of whether it affects your SSDI payment.

If you are self-employed, you must report your net self-employment income on Schedule C and pay self-employment tax on Schedule SE, even if your SSDI is not taxable. Self-employment income counts fully toward your combined-income calculation.

Frequently Asked Questions

Do I owe federal income tax on my SSDI if I have no other income?

No. If SSDI is your only income source, none of it is taxable federal income, and you do not owe federal tax. However, you may still want to file a return to claim refundable credits or to maintain a tax record.

What if I receive both SSDI and SSI?

SSI is never taxable, and it does not count toward your combined-income calculation for SSDI taxation purposes. Only your SSDI counts. Calculate combined income using half your SSDI plus all other income sources except SSI.

Can I deduct medical expenses to reduce my taxable SSDI?

No. Medical expenses are deductible only if you itemize deductions on Schedule A, and they must exceed 7.5 percent of your adjusted gross income. They do not reduce the combined-income calculation used to determine SSDI taxation.

What happens if I underreport my income on my tax return?

The IRS matches tax returns against Social Security records and other income reports. Underreporting can result in an audit, penalties, and interest charges. Report all income honestly, and use the worksheets provided in Form 1040 instructions to calculate the correct taxable portion of your SSDI.

Do I need to report my SSDI to the IRS if it is not taxable?

You do not need to report non-taxable SSDI on your federal return if you have no other income and do not file. However, if you file a return for any reason, you must report all SSDI received, even if none of it is taxable. The Form SSA-1099 you receive documents the amount.