Where SSDI Goes on Your Tax Form

You report SSDI on Form 1040, line 5b, under "Social Security benefits." This is the main federal income tax form most people file each year. The Social Security Administration sends you a Form SSA-1099 in January showing the total amount you received in the previous year — use that number when you fill in line 5b.

Even if your SSDI is not taxable (which is the case for most recipients), you still report the full amount you received. The tax code requires you to list it, then applies a formula to determine whether any of it is actually subject to tax. Leaving it off your return, even if you believe none of it is taxable, can trigger an IRS notice.

If you are married and file jointly, both spouses' SSDI amounts go on the same line 5b. If you file separately, each person reports only their own SSDI income on their individual return.

Key Takeaways

  • Report your total SSDI amount on Form 1040, line 5b, using the amount shown on your Form SSA-1099 from Social Security.
  • Most SSDI recipients pay no federal income tax on their benefits because their combined income stays below the threshold that triggers taxation.
  • Combined income is calculated by adding your adjusted gross income, nontaxable interest, and half of your SSDI — not just your SSDI alone.
  • If you have other income (wages, pensions, investment earnings), you may owe tax on part of your SSDI even if SSDI alone would not be taxable.
  • File Form 1040 even if you owe no tax, because the IRS uses your return to verify that you reported SSDI correctly.

How the IRS Calculates Whether Your SSDI Is Taxable

The IRS does not tax SSDI the same way it taxes wages. Instead, it uses a two-step calculation based on your combined income. Combined income is not the same as your total income — it is a specific formula: your adjusted gross income plus nontaxable interest plus half of your SSDI benefits.

If your combined income is below $25,000 (single filer) or $32,000 (married filing jointly), none of your SSDI is taxable. If it is above those thresholds, the IRS taxes up to 50 percent of your benefits, or in some cases up to 85 percent. The exact amount depends on how far above the threshold you are.

Example: You are single and receive $12,000 in SSDI. You have $8,000 in wages from part-time work. Your combined income is $8,000 plus half of $12,000 ($6,000), which equals $14,000. Since $14,000 is below $25,000, none of your SSDI is taxable, even though you have other income.

A second example: You are single and receive $12,000 in SSDI and $20,000 in wages. Your combined income is $20,000 plus $6,000, which equals $26,000. This is $1,000 above the $25,000 threshold, so up to $500 of your SSDI (half the excess) may be taxable. The actual amount depends on your total tax situation.

What Income Counts Toward the Combined Income Threshold

The combined income calculation includes wages, self-employment income, pensions, annuities, and taxable interest. It also includes nontaxable interest — interest from municipal bonds or other tax-exempt sources — which most income calculations do not count. This is one reason SSDI recipients sometimes owe tax even when their total earnings seem low.

Income that does not count toward combined income includes Supplemental Security Income (SSI), workers' compensation, veterans' benefits, and certain railroad retirement benefits. If you receive any of these alongside SSDI, they do not push you closer to the taxation threshold.

Distributions from retirement accounts (401(k), IRA, pension) count as income in the year you withdraw them. If you are over 59½ and take a distribution, the full amount counts toward combined income, even if you do not owe a penalty.

Filing Requirements When You Receive SSDI

You must file a federal tax return if your gross income exceeds a certain threshold, which varies by age and filing status. For 2023, a single person under 65 must file if gross income is $13,850 or more. A single person 65 or older must file if gross income is $17,500 or more. Married couples have higher thresholds.

However, even if your income is below the filing threshold, you should file a return if federal income tax was withheld from your pay or if you are may have access to to a refundable tax credit like the Earned Income Tax Credit. Many SSDI recipients who work part-time fall into this category.

If you do not file when you are required to, the IRS may assess penalties and interest. More importantly, if you do not report your SSDI on a return, Social Security and the IRS may flag your account for review, which can delay any future benefits or refunds.

State Income Tax and SSDI

Most states do not tax SSDI benefits at all, regardless of your income level. However, a few states — including Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, Rhode Island, Utah, and Vermont — tax SSDI under certain conditions. The rules vary by state.

If you live in one of these states, check your state tax agency's website or call their helpline to find out whether you owe state tax on your SSDI. Some states exempt SSDI entirely for residents over a certain age, or for residents whose income falls below a state-specific threshold.

You report state SSDI tax on your state income tax return, not on your federal Form 1040. The state form will have its own line for Social Security benefits, similar to the federal form.

What to Do If You Receive a Form SSA-1099

Social Security mails Form SSA-1099 to every SSDI recipient by January 31 each year. The form shows the total SSDI you received in the previous calendar year. Keep this form with your tax records — you will need it to fill in line 5b on your Form 1040.

If you do not receive your Form SSA-1099 by early February, contact Social Security at 1-800-772-1213 or visit your local Social Security office. You can also create an account at ssa.gov and view your form online under "My Statements."

If the amount on your Form SSA-1099 is wrong — for example, if it includes a month you did not receive benefits, or if you received a lump-sum back payment — contact Social Security to request a corrected form. Do not file your tax return with an incorrect amount; Social Security and the IRS compare records, and a mismatch can trigger an audit notice.

Working With a Tax Preparer or CPA

If you have SSDI and other income, a tax preparer or CPA can help you understand whether any of your benefits are taxable and what you owe. Bring your Form SSA-1099, any W-2s or 1099s from other income, and records of any nontaxable interest or other income sources.

Many tax preparation services offer free filing for low-income households through the IRS Free File program. You can search for a provider at irs.gov/freefile. If you use a paid preparer, ask them to explain the combined income calculation and why your SSDI is or is not taxable — understanding this helps you plan for future years.

If you believe you overpaid tax on your SSDI in a prior year, you can file an amended return (Form 1040-X) going back three years. A tax professional can help you determine whether an amended return is worth filing.

Frequently Asked Questions

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

No, not usually. If SSDI is your only income and you are not may have access to to any refundable credits, you do not have to file. However, if you had federal income tax withheld from other income (like wages from part-time work), you should file to get a refund.

What if I received a lump-sum back payment of SSDI?

The entire lump sum is reported on your Form SSA-1099 for the year you received it, which can push your combined income above the taxation threshold that year. You may owe tax on part of your SSDI as a result. Some people in this situation can use a special tax calculation called "income averaging" to reduce the tax impact — ask a tax preparer whether this applies to you.

Can I deduct anything to lower my SSDI tax?

No. SSDI is not subject to the standard deduction or itemized deductions. The only way to reduce tax on SSDI is to lower your other income (wages, pensions, interest) so that your combined income stays below the threshold.

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

The IRS will likely send you a notice because Social Security reports all SSDI payments to the IRS. You may owe penalties and interest on any unpaid tax. It is always better to report SSDI, even if you believe none of it is taxable.

Does my spouse's SSDI affect whether my SSDI is taxable?

Only if you file jointly. When married couples file a joint return, they combine their incomes and report both spouses' SSDI on the same line. If you file separately, each person's SSDI is calculated independently based on their own combined income.