Alimony Does Not Count as Income for SSDI Purposes, But It May Affect Your Federal Tax Return

Alimony you receive does not reduce your SSDI benefit amount, and the Social Security Administration does not count it as "income" when calculating whether you remain disabled or when determining your monthly payment. However, alimony is taxable income on your federal tax return, which means it can push you into a tax bracket where you owe federal income tax on your SSDI benefits themselves. This is a critical distinction: alimony does not shrink your SSDI check, but it can trigger taxes on that check.

The reason for this split treatment is that SSDI uses its own narrow definition of "income" (mainly wages and self-employment earnings) while the IRS uses a much broader one (which includes alimony). Understanding which rule applies in which situation prevents you from either overpaying taxes or underpaying them.

Key Takeaways

  • Alimony does not count toward the income limits that determine your SSDI benefit amount or whether you remain disabled.
  • Alimony is taxable income on your federal tax return and can cause your SSDI benefits to become taxable even if you have no other income.
  • The IRS uses "combined income" to decide whether SSDI is taxable, and combined income includes alimony plus half your SSDI plus other income sources.
  • You may owe federal income tax on your SSDI if your combined income exceeds $25,000 (single) or $32,000 (married filing jointly).
  • Alimony received under a divorce decree finalized before 2019 is treated differently than alimony from decrees finalized in 2019 or later.

Why SSDI and the IRS Treat Alimony Differently

Social Security has its own definition of "income" for the purpose of calculating your SSDI benefit. Under Social Security rules, income means wages from work, net earnings from self-employment, and a few other specific sources. Alimony is not on that list. This means if you receive $500 per month in alimony and $1,200 per month in SSDI, Social Security sees your countable income as $0 (assuming you have no wages or self-employment income), and your SSDI benefit stays at $1,200.

The IRS, by contrast, counts alimony as income for tax purposes. When the IRS calculates whether your SSDI is taxable, it adds up your alimony, your SSDI, and any other income to reach what it calls "combined income." This combined income figure determines whether you owe federal tax on your SSDI benefits. The same $500 alimony payment that Social Security ignores becomes part of the calculation that the IRS uses to tax your benefits.

This difference exists because SSDI is a disability insurance program focused on work capacity, while federal income tax is a separate system that taxes all income regardless of its source or your ability to work.

How Alimony Affects Whether Your SSDI Is Taxable

The IRS uses a formula called combined income to determine whether any of your SSDI is taxable. Combined income is calculated as:

Adjusted Gross Income (AGI) + Non-taxable interest + Half of your SSDI benefits + Alimony received

If your combined income exceeds certain thresholds, a portion of your SSDI becomes taxable. The thresholds are $25,000 for single filers and $32,000 for married couples filing jointly. If you are married filing separately, the threshold is $0, meaning any combined income at all can trigger taxation.

Example: You receive $1,200 per month in SSDI ($14,400 per year) and $400 per month in alimony ($4,800 per year). You have no other income. Your combined income is $4,800 (alimony) + $7,200 (half your SSDI) = $12,000. Since $12,000 is below $25,000, none of your SSDI is taxable that year.

If that same person also received $15,000 in other income (such as part-time wages), combined income would be $15,000 + $4,800 + $7,200 = $27,000. This exceeds $25,000, so up to 85% of the SSDI could become taxable, depending on how far over the threshold you go.

Alimony Received Under Pre-2019 Versus Post-2018 Divorce Decrees

The Tax Cuts and Jobs Act, which took effect in 2019, changed how alimony is taxed. This change affects whether alimony counts toward your combined income for SSDI tax purposes.

Alimony from a divorce decree finalized before January 1, 2019: The person receiving alimony reports it as income on their tax return. The person paying it can deduct it. For SSDI tax purposes, alimony received counts toward your combined income.

Alimony from a divorce decree finalized on or after January 1, 2019: The person receiving alimony does not report it as income, and the person paying it cannot deduct it. For SSDI tax purposes, alimony received under these newer decrees does not count toward your combined income. This means newer alimony payments have no effect on whether your SSDI becomes taxable.

If you are receiving alimony and unsure when your decree was finalized, check the divorce judgment or separation agreement itself. The date on the document determines which rule applies.

What to Do When Filing Your Tax Return

If you receive alimony under a pre-2019 decree, you must report it on your federal tax return. Report alimony on line 5a of Form 1040 (or the equivalent line on your state return if your state taxes alimony). This income will be included in your adjusted gross income and will be part of the combined income calculation that determines whether your SSDI is taxable.

If you receive alimony under a post-2018 decree, you do not report it on your tax return at all. It does not appear anywhere on Form 1040, and it does not affect your SSDI tax calculation.

To determine whether any of your SSDI is taxable, use the IRS Worksheet for determining taxable SSDI benefits, which appears in the instructions to Form 1040. If your combined income exceeds the threshold for your filing status, you will need to calculate how much of your SSDI is taxable. The IRS publication 915 walks through this calculation step by step.

If you receive SSDI and alimony, consider filing your tax return even if you would not normally be required to. Filing can allow you to claim the Earned Income Tax Credit or other credits you might be may have access to to, and it creates a record of your income for Social Security purposes.

How to Report This Information to Social Security

You do not need to report alimony to Social Security. Social Security does not ask about alimony on the SSA-7050-F1 (Statement Regarding Your Ability to Work) or any other SSDI form. Since alimony is not countable income under Social Security rules, reporting it would not change your benefit amount or your disability status.

However, if you are asked directly by a Social Security representative whether you receive any income, you should mention alimony so that the representative understands your full financial picture. Be clear that you understand it does not affect your SSDI benefit but that you receive it for tax purposes.

If you are working and also receiving alimony, report your wages to Social Security as required. Wages are countable income and can affect your SSDI if you earn above the substantial gainful activity threshold (currently $1,550 per month in 2024, though this amount changes yearly).

Frequently Asked Questions

Will receiving alimony cause my SSDI to be reduced?

No. Social Security does not count alimony as income for benefit calculation purposes. Your SSDI payment will not change because of alimony. However, alimony can cause your SSDI to become taxable on your federal tax return, which means you may owe income tax on the benefits you receive.

What if I receive alimony and also work part-time?

Your wages are countable income to Social Security and can reduce or eliminate your SSDI if you earn above the substantial gainful activity threshold. Alimony does not count, so it does not affect this calculation. However, both your wages and your alimony count toward combined income for IRS tax purposes, which can make your SSDI taxable.

Do I need to report alimony to Social Security when I report my work income?

No. When you report wages or self-employment income to Social Security, you do not need to mention alimony. Social Security only cares about work income for SSDI purposes. You should report alimony on your federal tax return if your divorce decree was finalized before 2019.

Can I deduct alimony payments I make if I am on SSDI?

If you are paying alimony under a decree finalized before 2019, you can deduct it on your tax return. If the decree was finalized in 2019 or later, you cannot deduct it. Being on SSDI does not change these rules. Consult a tax professional if you pay alimony and want to understand your deduction options.

What if my alimony payments stop or change?

If your alimony payments decrease or end, your combined income will decrease, which may mean less of your SSDI is taxable. If payments increase, more of your SSDI may become taxable. Report the change on your next tax return. You do not need to notify Social Security unless the change affects your work income.