You must report SSDI benefits as income on your tax return, but the amount you owe in tax depends on your total income and filing status

Social Security Disability Insurance (SSDI) is taxable income in the eyes of the IRS, though not all of it may be subject to tax. The key is your combined income—a calculation that includes your SSDI, wages, interest, dividends, and other sources. If your combined income falls below a certain threshold, you owe no tax on your benefits. If it exceeds that threshold, between 0% and 85% of your SSDI becomes taxable, depending on how far over you go.

The IRS uses a formula, not a flat percentage. You calculate your combined income, compare it to a base amount (which varies by filing status), and the result tells you what portion of your SSDI is taxable. This is different from how most income works—you do not pay tax on the first dollar of SSDI; instead, you pay tax only on the portion that pushes you over the threshold.

Social Security sends you a Form SSA-1099 each January showing the total SSDI you received in the prior year. You use this figure, along with your other income, to complete your tax return. If you owe tax on your benefits, you can pay it when you file, or you can have Social Security withhold tax from your monthly payment going forward.

Key Takeaways

  • SSDI is taxable income, but only if your combined income (SSDI plus wages, interest, and other sources) exceeds a base threshold that depends on your filing status.
  • You receive a Form SSA-1099 in January showing your total SSDI for the prior year; use this to report on your tax return.
  • Between 0% and 85% of your SSDI may be taxable depending on how much your combined income exceeds the threshold.
  • You can pay tax owed when you file, or request that Social Security withhold taxes from your monthly benefit payment.
  • If you have little or no other income, you may owe no tax on your SSDI even though you must still file a return to claim refundable credits.

Understanding Combined Income and the Tax Threshold

The IRS defines combined income as your adjusted gross income (AGI) plus nontaxable interest plus half of your SSDI benefits. This is the number that determines whether any of your SSDI is taxable. The base threshold depends on your filing status: for single filers it is $25,000; for married filing jointly it is $32,000; for married filing separately it is $0 (meaning any SSDI is potentially taxable).

If your combined income is below the threshold, none of your SSDI is taxable and you owe no federal income tax on your benefits. If your combined income exceeds the threshold, you move into a two-tier system. The first tier taxes up to 50% of your benefits; the second tier taxes up to an additional 35%, for a maximum of 85% of your SSDI subject to tax.

Example: You are single and receive $15,000 in SSDI for the year. You also have $12,000 in wages from part-time work. Your combined income is $12,000 + (½ × $15,000) = $19,500. Since $19,500 is below the $25,000 threshold, none of your SSDI is taxable. You owe no federal income tax on your benefits, though you may owe tax on your wages.

Another example: You are single with $15,000 in SSDI and $20,000 in wages. Your combined income is $20,000 + $7,500 = $27,500, which exceeds the $25,000 threshold by $2,500. Up to 50% of your SSDI ($7,500) becomes taxable, but only the amount above the threshold counts, so $2,500 of your SSDI is taxable in this case.

How to Calculate Taxable SSDI Using IRS Worksheet

The IRS provides a worksheet in the instructions to Form 1040 that walks you through the calculation step by step. You do not need to do the math yourself if you use tax software or work with a tax preparer—they will enter your Form SSA-1099 and other income, and the software calculates the taxable portion automatically.

If you are doing it by hand, the worksheet asks you to list your AGI, nontaxable interest, and half your SSDI. You subtract the base threshold for your filing status. If the result is zero or negative, you stop—no SSDI is taxable. If it is positive, you move to the second part of the worksheet, which applies the two-tier formula to determine the exact amount of SSDI that becomes taxable income on your return.

Most tax software (TurboTax, H&R Block, TaxAct) and free IRS tools like VITA (Volunteer Income Tax information) handle this calculation without requiring you to understand the formula. You enter your Form SSA-1099 amount and your other income, and the software produces the correct result. If you are unsure, a VITA site near you offers free tax preparation, and the volunteer can explain the calculation as they work through your return.

Reporting SSDI on Your Tax Return

You report your SSDI on Form 1040, line 5b (or line 5 on the simplified 1040-SR if you are 65 or older). The amount you enter is the total from your Form SSA-1099, box 5. You do not enter just the taxable portion—you enter the full amount, and the IRS worksheet determines how much of it is actually taxable.

If you are filing electronically, your tax software will prompt you to enter the SSA-1099 information and will automatically calculate the taxable portion and place it in the correct location on your return. If you are filing by paper, you must complete the worksheet in the Form 1040 instructions and enter the result on line 5b.

You must file a return if your income (including SSDI) meets the filing threshold for your age and filing status, even if you owe no tax. For 2024, a single person under 65 must file if their gross income is $14,600 or more. However, you may want to file even if you do not meet the threshold, because you might be due a refund through the Earned Income Tax Credit (EITC) or other refundable credits—and those credits are only available if you file.

Withholding Taxes From Your SSDI Payment

If you owe tax on your SSDI, you have two options: pay the tax when you file your return, or request that Social Security withhold a percentage of your monthly benefit payment. Withholding is voluntary and does not change the amount of tax you owe—it straightforward spreads the payment across the year instead of paying it all at once in April.

To request withholding, you complete Form W-4V (Voluntary Withholding Request) and submit it to Social Security. You can choose to withhold 7%, 10%, 15%, or 25% of your monthly benefit. Social Security will then reduce your monthly payment by that percentage and send the withheld amount to the IRS on your behalf.

Withholding is useful if you do not have the cash to pay a large tax bill in April, or if you prefer to have taxes taken out gradually. However, withholding does not reduce the amount of tax you ultimately owe—it only changes when you pay. If you withhold too little, you will still owe when you file; if you withhold too much, you will receive a refund.

State Income Tax on SSDI

Most states do not tax SSDI benefits, but a few do. Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, and Vermont tax some or all SSDI income, though most offer exemptions or deductions that reduce or eliminate the tax for lower-income recipients.

If you live in one of these states, you will need to report your SSDI on your state return as well. The state's rules for what portion is taxable may differ from the federal rules. For example, some states use a lower threshold or a different formula. You should check your state's tax agency website or speak with a tax preparer familiar with your state's rules.

If you live in a state that taxes SSDI, you can also request state tax withholding using Form W-4V. You specify the federal withholding percentage and the state withholding percentage separately, and Social Security will withhold both.

What Happens If You Do Not Report SSDI on Your Taxes

If you receive SSDI and are required to file a tax return but do not, the IRS will eventually notice. Social Security reports all SSDI payments to the IRS, and the IRS matches that information against filed returns. If you did not report the income, the IRS will send you a notice and may assess penalties and interest on the unpaid tax.

The penalty for failing to file is usually 5% of the unpaid tax per month (up to 25%), plus interest on the unpaid amount. If the IRS determines you owed tax and did not pay it, the interest compounds daily. Filing late is better than not filing at all—you can still file a prior-year return, and the IRS may reduce penalties if you have a reasonable explanation.

If you believe you do not owe tax because your combined income is below the threshold, you should still file a return to document that fact. Filing protects you from penalties and also allows you to claim refundable credits like the EITC, which can result in a refund even if you owe no income tax.

Frequently Asked Questions

Do I have to file a tax return if I only receive SSDI and have no other income?

It depends on the amount. For 2024, a single person under 65 must file if their gross income is $14,600 or more. If you receive less than that in SSDI alone, you are not required to file. However, you may want to file anyway to claim the Earned Income Tax Credit or other refundable credits, which can result in a refund.

Can I claim dependents or deductions if I receive SSDI?

Yes. SSDI does not prevent you from claiming dependents, the standard deduction, or other deductions you are may have access to to. Your SSDI is just one line of income on your return. You can still use the standard deduction to reduce your taxable income, and you can claim dependents if you meet the requirements.

What if I disagree with the amount shown on my Form SSA-1099?

Contact Social Security directly. You can call 1-800-772-1213 or visit your local Social Security office with your Form SSA-1099 and any payment records you have. Social Security will review the amount and issue a corrected Form SSA-1099 if there is an error. Do not file your tax return until the discrepancy is resolved.

If I have back taxes owed, will Social Security offset my SSDI to pay them?

Yes, the IRS can request that Social Security withhold your SSDI to pay back federal income taxes, federal student loans, or certain other federal debts. This is called offset or levy. If you receive a notice that your SSDI will be offset, you have the right to request a hearing to dispute it.

Does working part-time while on SSDI change how I report my benefits on taxes?

No. You report your SSDI the same way regardless of whether you work. However, your wages are added to your combined income, which may push you over the threshold and make some of your SSDI taxable. You must report both your SSDI and your wages on your tax return.