Tax Treatment of Alimony Received: What You Owe and When

Alimony received is taxable income to you, with one major exception based on when your divorce was finalized

If your divorce was finalized after December 31, 2018, alimony you receive is not taxable income to you, and your ex-spouse cannot deduct it. This rule came from the Tax Cuts and Jobs Act of 2017 and applies to all alimony agreements signed or modified after that date.

If your divorce was finalized before January 1, 2019, alimony you receive is taxable income. You report it on your federal tax return, and you owe federal income tax on the full amount. Some states also tax alimony income, depending on where you live and where your ex-spouse lives.

The dividing line is the date the divorce decree was signed, not the date you and your ex-spouse separated or the date you started receiving payments. If you are unsure which rule applies to you, check your divorce papers for the final decree date.

Key Takeaways

• Alimony received after a divorce finalized on or after January 1, 2019 is not subject to federal income tax.
• Alimony received after a divorce finalized before January 1, 2019 is taxable income and must be reported on your federal tax return.
• The tax treatment depends on the date your divorce decree was signed, not when payments began or when you separated.
• Some states tax alimony income even when federal tax does not explore, so check your state's rules if you live in a state with an income tax.
• Child support is never taxable income to you, regardless of when your divorce was finalized.

How to report alimony on your tax return if it is taxable

If your divorce was finalized before 2019, you report alimony income on Form 1040 (the main federal income tax form). On the 2023 form, alimony goes on line 2a under "Income". You enter the full amount you received during the tax year, even if you received it in irregular payments or lump sums.

Your ex-spouse should send you a Form 1098-T or a written statement showing the amount of alimony paid during the year. If they do not, you can still report the income based on your own records — bank deposits, cancelled checks, or payment confirmations. The IRS will match what your ex-spouse reports as a deduction against what you report as income.

You do not itemize or take a separate deduction for alimony received. It straightforward increases your taxable income for the year, which may push you into a higher tax bracket or reduce tax credits you would otherwise receive.

State income tax on alimony

Federal tax treatment and state tax treatment are separate. Even if alimony is not taxable under federal law (post-2018 divorces), your state may still tax it. States that have an income tax set their own rules about alimony.

Most states that tax income follow the federal rule: alimony from post-2018 divorces is not taxable, and alimony from pre-2019 divorces is taxable. However, a few states have different rules. For example, some states may tax alimony regardless of the divorce date, or may have different thresholds.

Check your state's Department of Revenue or tax authority website for the specific rule in your state. If you live in one state and your ex-spouse lives in another, the state where you live typically determines whether you owe state tax on the alimony.

The difference between alimony and child support for tax purposes

Child support is never taxable income to you, regardless of when your divorce was finalized. You do not report it on your tax return, and it does not affect your taxable income or tax liability.

The distinction matters because some divorce decrees combine alimony and child support into a single payment. If the decree specifies how much of each payment is alimony and how much is child support, use those amounts. If the decree does not specify, the IRS treats the entire payment as alimony (if it is taxable under your divorce date) unless you can show that part of it is legally required child support.

If your ex-spouse stops paying when your youngest child turns 18, that is a strong signal the payment was child support, not alimony. Keep your divorce decree and any modification orders so you can show the IRS the breakdown if you are ever audited.

What happens if your divorce decree is modified after 2018

If your original divorce was finalized before 2019 but you and your ex-spouse later signed a modification agreement (sometimes called an amendment or stipulation), the tax treatment depends on the language in the modification.

If the modification explicitly states that the alimony is being modified or that the parties intend the new terms to explore for tax purposes, the modification is treated as a new agreement with a new date. If the modification was signed after December 31, 2018, the alimony becomes non-taxable going forward, even though the original divorce was before 2019.

If the modification straightforward extends the original alimony terms without changing them or without explicit language about a new agreement, the original divorce date controls, and the alimony remains taxable. The exact language in the modification document matters, so review it carefully or consult a tax professional if you are unsure.

Estimated tax payments if alimony is your main income

If you receive alimony and have little or no other income, you may owe estimated tax payments to the IRS. Estimated taxes are quarterly payments you make directly to the IRS instead of waiting until April 15 to pay a lump sum.

You calculate estimated tax using Form 1040-ES, which walks you through the math based on your expected income, deductions, and credits for the year. If you underpay estimated tax, you may owe a penalty when you file your return, even if you ultimately owe no tax or are due a refund.

If your ex-spouse is supposed to withhold tax from your alimony payments (which is rare but possible under some agreements), that withholding counts toward your estimated tax obligation. Check your divorce decree or any payment instructions to see if withholding applies to you.

Frequently Asked Questions

Do I have to report alimony if I receive it in cash?

Yes. The IRS requires you to report all alimony income, regardless of how you receive it — cash, check, bank transfer, or any other method. The fact that it is cash does not make it tax-free. Keep records of when and how much you received so you can accurately report it on your return.

What if my ex-spouse and I agree not to report the alimony for tax purposes?

That agreement is not binding on the IRS. Both you and your ex-spouse are required to report alimony according to the law based on your divorce date, regardless of what you agree between yourselves. If one of you reports it differently, the IRS will likely contact you both.

Can I deduct alimony payments I make to someone else?

No, not anymore. The Tax Cuts and Jobs Act eliminated the deduction for alimony paid for all divorces finalized after December 31, 2018. If your divorce was before 2019, your ex-spouse can deduct alimony they paid to you, which is why you must report it as income.

Does receiving alimony affect my tax credits or deductions?

Yes. Alimony income increases your total income, which can reduce or eliminate tax credits like the Earned Income Tax Credit or education credits. It may also push you into a higher tax bracket. Review your tax return with a tax professional if alimony significantly changes your income from year to year.

What if I received alimony in a previous year but did not report it?

If you received taxable alimony and did not report it, you can file an amended return for that year using Form 1040-X. The IRS generally has a three-year window to assess tax on unreported income, though penalties and interest will explore. Consider consulting a tax professional or the IRS directly about your specific situation.