Alimony is taxable income to the person who receives it, but only if the divorce or separation agreement was signed before January 1, 2019

The tax treatment of alimony changed dramatically at the start of 2019. If your divorce decree or separation agreement was finalized before that date, the person receiving alimony must report it as income on their federal tax return, and the person paying it can deduct it. If your agreement was signed on or after January 1, 2019, neither person reports alimony on their taxes — it is not deductible for the payer and not taxable income for the receiver.

This shift affects how much alimony actually costs the payer and how much the receiver keeps. A payer who could once deduct alimony now bears the full cost without a tax break. A receiver who once owed taxes on it now keeps the full amount. The rule applies to all alimony, spousal support, and maintenance payments — the terminology varies by state, but the tax rule is the same.

Your divorce or separation agreement date determines which rule applies to you. If you are unsure when your agreement was signed, check the document itself or contact your attorney. The IRS does not make exceptions based on when you started paying or receiving; the signing date is what matters.

Key Takeaways

  • Alimony received under agreements signed before January 1, 2019 must be reported as taxable income on your federal return.
  • Alimony paid under agreements signed before January 1, 2019 can be deducted by the payer on their federal return.
  • Alimony under agreements signed on or after January 1, 2019 is not taxable to the receiver and not deductible by the payer.
  • The signing date of your divorce decree or separation agreement determines which rule applies, regardless of when payments began or ended.
  • Some states have their own alimony tax rules that may differ from federal rules, so check your state's tax guidance as well.

How to report alimony on your federal tax return

If you receive alimony under a pre-2019 agreement, you report it on Form 1040 as income. The payer should send you a Form 1098-T or a written statement showing the total alimony paid during the year. You enter this amount on the appropriate line of your return — the exact line depends on which form you file, but the IRS instructions for Form 1040 will direct you to the right place.

If you pay alimony under a pre-2019 agreement, you report it as a deduction. You will need the Social Security number of the person receiving the alimony to claim the deduction. If you do not have it, you cannot deduct the payments. The payer enters the deduction on Form 1040 as well, on the line for alimony paid.

If your agreement was signed in 2019 or later, neither person reports alimony on the federal return. You do not enter it anywhere, and it does not affect your taxable income or your deductions.

State taxes and alimony

Federal tax rules are one thing; your state may have different rules. Some states follow the federal system exactly — taxable for receivers, deductible for payers under pre-2019 agreements. Other states have not adopted the 2019 federal change and still treat alimony as taxable income to the receiver and deductible by the payer, even for agreements signed after 2018.

A few states do not tax alimony at all, regardless of when the agreement was signed. If you live in a state with no income tax — Texas, Florida, Nevada, South Dakota, Tennessee, Washington, or Wyoming — you owe no state tax on alimony income. If you live elsewhere, check your state's tax authority website or ask a tax professional whether your state follows the federal rule or has its own.

You may also owe taxes in a different state than where you live. If you receive alimony from someone in another state, that state may claim the right to tax it. This is rare and usually only happens if you work in that state or have other income there, but it is worth checking if your situation is complicated.

What counts as alimony for tax purposes

Not every payment from one ex-spouse to another is alimony for tax purposes. The IRS has specific rules about what qualifies. The payment must be made under a divorce decree, separate maintenance decree, or written separation agreement. It must be paid in cash (or cash equivalent like a check or electronic transfer). It must be for the support of the recipient, not as payment for property or a business interest.

Child support does not count as alimony and is never taxable to the receiver or deductible by the payer, regardless of the agreement date. If your agreement lumps child support and alimony together in one payment, you and the payer need to separate them — only the alimony portion follows the tax rules above. If the agreement does not specify which part is which, the IRS will allocate it based on the agreement language and the circumstances.

Payments that stop when the recipient remarries or dies are treated as alimony. Payments that continue indefinitely or until a set age are also alimony. Lump-sum payments in a single year can be alimony if the agreement calls them that, but the IRS scrutinizes these closely to make sure they are not disguised property settlements.

What happens if you paid or received alimony under the wrong rule

If you reported alimony incorrectly in a prior year — for example, you deducted alimony on a post-2019 agreement, or you failed to report alimony income on a pre-2019 agreement — you can file an amended return. Use Form 1040-X to correct the error. You have three years from the original due date of the return to amend it and claim a refund, or the IRS can assess additional tax within that window.

If the IRS audits your return and finds an error, they will assess tax, interest, and possibly penalties. The penalty for a mistake on alimony reporting is usually 20 percent of the underpaid tax, though it can be higher if the IRS determines the error was intentional. If you and your ex-spouse disagree about how much alimony was paid or whether it qualifies as alimony, the IRS will look at the divorce decree and any written statements you both provided.

If you are unsure whether you reported alimony correctly in prior years, a tax professional can review your returns and advise you on whether to amend them. The sooner you correct an error, the better — waiting until the IRS contacts you puts you in a weaker position.

Modifying an agreement and tax consequences

If you and your ex-spouse modify your alimony agreement — changing the amount, the duration, or the terms — the modification date matters for taxes. If you modify an agreement that was signed before 2019, the modification itself may trigger the new rule. If the modification is substantial enough that the IRS treats it as a new agreement, alimony under the modified terms may no longer be deductible or taxable, depending on when the modification took effect.

A modification is usually considered substantial if it changes the amount by more than 10 percent or extends the duration significantly. A small increase to keep up with inflation or a one-time adjustment is less likely to be treated as a new agreement. The safest approach is to have your attorney review any modification before you sign it and advise you on the tax consequences.

If you are considering modifying your agreement specifically to change the tax treatment — for example, a payer trying to make alimony non-deductible to reduce the receiver's income — the IRS may disallow the change. The agency looks at the substance of the modification, not just the label. If the modification appears designed solely to shift tax burden, it may not be respected.

Frequently Asked Questions

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

Yes. Cash alimony is still taxable income if your agreement was signed before January 1, 2019. The fact that it was paid in cash does not change the tax rule. You are required to report it on your return, and the IRS can assess penalties and interest if you do not.

Can I deduct alimony if I paid it but did not get a receipt?

You can deduct it if your agreement was signed before 2019, but you will need documentation. A cancelled check, bank statement, or written acknowledgment from the recipient is usually enough. If the IRS audits you and you have no proof of payment, they may disallow the deduction. Keep records of all alimony payments for at least three years.

What if my ex-spouse and I agreed to change the tax treatment after the fact?

You cannot override the tax rule by agreement. If your divorce decree was signed before 2019, alimony is taxable to the receiver and deductible by the payer under federal law, regardless of what you and your ex-spouse agreed to later. A written agreement between you does not change the IRS rule. Only a formal modification to the divorce decree, signed by a judge, might change the tax treatment, and even then the IRS may not respect it if it appears designed solely to shift tax burden.

Does alimony count as income for other purposes, like student loan repayment plans?

Yes, if it is taxable alimony under a pre-2019 agreement, it counts as income for federal student loan income-driven repayment plans, Medicaid, and other means-tested programs. If your agreement was signed in 2019 or later and alimony is not taxable, it generally does not count as income for these programs either. Check with the specific program to confirm, because some have their own rules.

What if I live in one state and my ex-spouse lives in another?

You follow the federal rule and your own state's rule. If your state follows the federal system, pre-2019 alimony is taxable to you and deductible by your ex-spouse. If your state has not adopted the 2019 change, alimony may still be taxable to you even if the agreement was signed after 2018. Your ex-spouse may also owe tax to their state. Both of you should check your own state's tax authority website or consult a tax professional in your state.