Is Alimony Tax Deductible? Rules After 2019 Explained

You are negotiating a divorce settlement, the other side proposes $2,000 a month in spousal support, and someone at the table says, "Remember, that's deductible." Maybe it is. Maybe it has not been for years. The answer to "is alimony tax deductible" depends almost entirely on one date printed on your paperwork, and getting it wrong can cost thousands of dollars a year for as long as the payments last.

This guide walks through the federal rule that changed on January 1, 2019, the grandfathered agreements that still follow the old rule, what the person receiving alimony owes, the states that go their own way, and how child support and property transfers fit in. It ends with worked examples so you can see the real after-tax numbers.

TL;DR: For federal income tax, alimony paid under a divorce or separation agreement executed after December 31, 2018 is not deductible by the payer and not taxable to the recipient. Agreements executed on or before December 31, 2018 keep the old rule (deductible for the payer, taxable income for the recipient) unless a later modification expressly adopts the new rule. Child support is never deductible or taxable, and property transferred in a divorce is generally tax-free when it changes hands. A few states, including New York and New Jersey, still let payers deduct alimony on the state return, and California did so for agreements signed from 2019 through 2025.

Is alimony tax deductible? The short answer

It depends on when your divorce or separation instrument was executed:

• Executed after December 31, 2018: No federal deduction for the payer. No federal income for the recipient. The payments are tax-neutral, a lot like child support.
• Executed on or before December 31, 2018: The payer can still deduct qualifying alimony, and the recipient must report it as income, every year the payments continue.
• Executed before 2019 but modified after 2018: The old rule continues unless the modification expressly states that the new rule applies. An ordinary change in the amount does not flip the treatment by itself.

That split comes from the Tax Cuts and Jobs Act of 2017 (TCJA). Section 11051 of that law repealed the alimony deduction in Internal Revenue Code §215 and the matching income-inclusion rule in §71. Unlike many TCJA provisions, this one was written without a sunset date, so there is no scheduled return of the old rule.

"Divorce or separation instrument" is broader than a final decree. It includes a divorce or separate maintenance decree, a written separation agreement, and a court order requiring one spouse to support the other (a temporary support order, for example). The date that matters is the date the operative instrument was executed.

What changed for divorces after 2018

Before 2019, alimony worked as an income shift. The higher earner deducted the payments, the lower earner reported them, and because the recipient was usually in a lower bracket, the couple as a whole paid less tax. Settlements were often negotiated around that saving.

The TCJA ended the shift for new agreements. The IRS states it plainly in Publication 504: amounts paid as alimony under an instrument executed after 2018 "won't be deductible by the payer" and "won't be includible in the income of the recipient."

In practice this means:

• The payer uses after-tax dollars. Every dollar of support now costs a full dollar.
• The recipient keeps every dollar. There is no federal tax bill on the payments, and no need to make estimated tax payments on them.
• Negotiations changed. Because the payer no longer gets a tax break, the same after-tax budget buys less support. Many post-2018 awards are lower in dollar terms for exactly this reason (see the worked examples below).

One side effect catches recipients off guard: post-2018 alimony no longer counts as "compensation" for IRA contribution purposes. Publication 504 limits that treatment to taxable alimony under instruments executed on or before December 31, 2018 that have not been modified to exclude it. If alimony is your only income, you may not be able to fund an IRA with it.

Pre-2019 agreements and the "expressly adopts" rule

If your agreement was executed before 2019, the old rules still apply, and they come with conditions. Under Publication 504, a payment only counts as deductible alimony if all of these are true:

• It is paid in cash (checks and money orders count; transferring property does not).
• It is paid to or on behalf of a spouse or former spouse under a divorce or separation instrument.
• The instrument does not designate the payment as not alimony.
• You and your former spouse are not members of the same household when the payment is made (if you are legally separated under a decree).
• There is no obligation to keep paying after the recipient's death.
• The payment is not child support, and you do not file a joint return with each other.

Voluntary payments made outside the instrument never qualify, and neither do noncash property settlements.

When a modification changes the tax treatment

Modifying an old agreement does not automatically move it into the new regime. Publication 504 walks through the key scenarios:

• A modification that only changes the amount. A 2016 decree is modified in 2025 to increase payments, and the modification says nothing about the new tax rules. All 2025 payments stay deductible for the payer and taxable to the recipient.
• A modification that expressly adopts the new rules. Same facts, but the modification states that the post-2018 rules apply. Payments before the modification keep the old treatment; payments after it are neither deductible nor taxable.
• A pre-2019 separation agreement replaced by a post-2018 decree. A couple signs a written separation agreement in 2016, and a court enters the divorce decree in 2025 on the same terms. Payments under the separation agreement follow the old rule, but once the new decree takes over, payments under it follow the new rule, because the operative instrument was executed after 2018.

The third scenario is the one people miss. If you separated before 2019 but your final decree came later, check which document your payments are actually made under.

Choosing to "opt in" is a negotiation point, not a technicality. A payer in a high bracket gives up a deduction; a recipient gets tax-free income. Neither side should agree to the language without running the numbers.

Recapture of front-loaded alimony

Old-rule agreements also carry the recapture rule. If alimony drops by more than $15,000 from the second year to the third, or the second- and third-year payments drop significantly from the first year, the payer may have to add back part of the earlier deductions in the third year (and the recipient deducts the same amount). Payments under temporary support orders, payments that vary because they are a fixed share of business or employment income, and reductions caused by death or the recipient's remarriage are excluded. Because the test looks only at the first three calendar years of payments under the decree or written agreement, it rarely comes up for a pre-2019 agreement today.

Is alimony taxable income for the person who receives it?

The recipient's treatment mirrors the payer's:

• Agreement executed after 2018: Alimony is not taxable income on the federal return. You do not report it.
• Agreement executed on or before 2018 (and not modified to adopt the new rule): Alimony is taxable income. You report it every year you receive it and may need to make estimated tax payments or adjust withholding elsewhere, since tax is generally not withheld from alimony (the main exception is withholding on payments to a nonresident alien spouse).

Recipients under an old agreement also have to give the payer their Social Security number or ITIN. Publication 504 notes that a recipient who does not may owe a $50 penalty, and a payer who does not report it may have the deduction disallowed.

Child support vs alimony: how each is taxed

Child support has never been deductible by the payer or taxable to the recipient, before or after the TCJA. That makes the line between child support and alimony important for anyone under a pre-2019 agreement, or filing in a state that still taxes alimony.

• Labels are not the last word. Under the pre-2019 rules, a payment is treated as child support to the extent it is reduced on a contingency relating to a child (turning 18, leaving school, marrying) or at a time clearly associated with one. So "alimony" that drops the month a child turns 18 is partly child support for tax purposes.
• Shortfalls go to child support first. If an instrument requires both, and the payer pays less than the total, the IRS applies the payments to child support first and only the remainder to alimony.

For post-2018 federal purposes the distinction no longer moves any tax, because neither type of payment is deductible or taxable. It still matters for state returns in the states covered below. If you are still working out the support figures themselves, our alimony calculator and the guide on how alimony is calculated cover the amounts; this article is about what the tax code does with them.

Property settlements are not alimony

Dividing assets is a separate track. Under IRC §1041, as summarized in Publication 504, there is generally no gain or loss recognized when property passes between spouses, or between former spouses when the transfer is incident to the divorce. That holds even if the transfer is in exchange for cash, a release of marital rights, or taking over debt.

The catch is basis. The spouse who receives the property takes over the transferor's adjusted basis, not its current value. A house or stock portfolio with a large built-in gain is worth less after tax than a same-value bank account, because the tax on that gain arrives when the new owner sells.

So when you compare "you keep the house, I keep the brokerage account," compare after-tax values, not sticker values. If a home buyout is on the table, the divorce buyout calculator helps you work out the equity split before you factor in the tax basis. Retirement accounts divided under a qualified domestic relations order and IRAs transferred incident to divorce have their own rules, covered in Publication 504.

State income tax: where the rules differ

Most states that start their income tax from federal adjusted gross income follow the federal result automatically. Several important states do not:

California's change is new. Senate Bill 711, signed on October 1, 2025, moved California to the federal treatment only for agreements executed after December 31, 2025 (or older ones modified to expressly adopt the change). If you signed between 2019 and 2025, you are in the odd position of having a federal nondeductible payment that is still deductible on your California return, and starting with tax year 2025 the Schedule CA asks for the month and year of your divorce or separation agreement.

For a payer who lives in a state that still allows the deduction, the state-level saving can be real money. For a recipient in the same state, the payments are taxable income on the state return even though they are tax-free federally. If the two of you live in different states, each return follows its own state's rules.

Alimony tax calculator: how to work out the after-tax cost

A tax deduction is worth your marginal tax rate times the amount deducted. That gives you a simple way to compare scenarios yourself:

• Payer's after-tax cost = annual alimony × (1 − payer's marginal rate), if the payment is deductible. If not, the after-tax cost is the full amount.
• Recipient's after-tax income = annual alimony × (1 − recipient's marginal rate), if the payment is taxable. If not, the recipient keeps the full amount.

Add your state rate to the marginal rate if your state allows the deduction or taxes the income. The examples below use rounded, illustrative rates and ignore phase-outs and bracket changes, so treat them as a way to see the shape of the numbers, not a tax return.

Example 1: Agreement executed in 2024 (new rule)

Support is $2,000 a month, or $24,000 a year.

• Payer: no deduction. After-tax cost is $24,000.
• Recipient: no tax. Keeps $24,000.

Example 2: Agreement executed in 2017 (grandfathered)

Same $24,000 a year. Assume the payer's marginal federal rate is 32% and the recipient's is 12%.

• Payer's deduction saves 32% × $24,000 = $7,680. After-tax cost is $16,320.
• Recipient owes 12% × $24,000 = $2,880. Keeps $21,120.

Under the old rule, the couple together sends $4,800 less to the IRS each year than under the new rule ($7,680 saved minus $2,880 owed). That gap is the "tax subsidy" the TCJA removed for new agreements.

Example 3: The same budget under the new rule

Suppose the payer in Example 2 can afford the same $16,320 after-tax cost, but the agreement is signed in 2024. With no deduction, $16,320 is all the payer can pay, and the recipient receives $16,320 tax-free. Compared with the grandfathered agreement, the recipient ends up about $4,800 a year worse off ($21,120 versus $16,320) even though the payer's cost has not changed. This is why the date, and any decision to opt a modification into the new rule, matters so much in negotiations.

Example 4: New York payer with a 2023 decree

Federal return: no deduction. New York return: the payer subtracts the $24,000 using modification S-136. At an illustrative 6% marginal state rate, that saves about $1,440 a year in New York tax, and the recipient adds the $24,000 to New York income using A-119.

Which IRS forms and lines apply to grandfathered alimony

Only pre-2019 agreements (and ones modified without opting in) produce any federal reporting. According to Publication 504 for tax year 2025:

• Payer: Deduct alimony on Schedule 1 (Form 1040), line 19a. Enter the recipient's SSN or ITIN on line 19b and the month and year of the original divorce or separation agreement on line 19c. You must file Form 1040 or 1040-SR; the deduction is not available on Form 1040-NR. If you paid more than one recipient, attach a statement with each one's SSN or ITIN and amount.
• Recipient: Report alimony received on Schedule 1 (Form 1040), line 2a, with the month and year of the original agreement on line 2b. Nonresident filers report on Schedule NEC (Form 1040-NR).
• Recapture (if it applies): Figure it on Worksheet 1 in Publication 504. The payer reports recaptured alimony on line 2a, and the recipient deducts it on line 19a, writing "recapture" in place of "received" or "paid."

Line numbers can shift from year to year, so check the current Schedule 1 instructions before you file. State returns have their own lines (California's Schedule CA, New York's Form IT-225, and so on).

Checklist before you sign or modify an agreement

• Find the execution date of the instrument you are paying or receiving under, not the date you separated.
• Read any modification for language that expressly adopts the post-2018 rules, and decide deliberately whether to include it.
• Separate child support from alimony clearly, and avoid reductions tied to a child's age if you are relying on alimony treatment under an old agreement or a state that still taxes it.
• Price property on an after-tax basis, since the receiving spouse inherits the tax basis.
• Check your state, especially California, New York, New Jersey, and Pennsylvania, where the answer differs from federal.
• Have the draft reviewed. If you want a second look at a proposed settlement before it goes to your lawyer, AI document review can flag ambiguous support and tax clauses, and a personal AI legal assistant can explain what each term means for you in plain English.

The bottom line

For any divorce or separation agreement executed after 2018, alimony is not tax deductible for the payer and not taxable income for the recipient on the federal return. Older agreements keep the old deduction-and-inclusion rule unless a modification expressly adopts the new one, and a later decree replacing an older separation agreement can switch you to the new rule without anyone saying so. Child support is never deductible or taxable, property transfers are tax-free but carry the old basis, and states such as California, New York, and New Jersey can give you a different answer on your state return.

Because a single sentence in a modification can change the tax treatment for years, it pays to get precise answers before you sign. An AI legal assistant like LegesGPT can answer questions about your agreement with citations to the underlying rules and help you prepare settlement documents for your attorney to finalize.

This article is general information, not tax or legal advice. Tax treatment depends on your agreement's exact wording and dates, your state, and your overall tax picture, so confirm your situation with a tax professional or family law attorney.

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Frequently Asked Questions

Is alimony tax deductible in 2026?

For federal income tax, alimony paid under a divorce or separation agreement executed after December 31, 2018 is not deductible. If your agreement was executed on or before that date and has not been modified to expressly adopt the new rules, qualifying alimony is still deductible by the payer in 2026. Some states, such as New York and New Jersey, allow a deduction on the state return even when the federal return does not.

Is alimony taxable income for the recipient?

Not on the federal return if the agreement was executed after 2018. Under an agreement executed on or before December 31, 2018, alimony is taxable income to the recipient and is reported on Schedule 1 of Form 1040. State treatment can differ, so recipients in states like New York, New Jersey, or California (for agreements signed before 2026) may still owe state tax on it.

Is alimony paid tax deductible if my divorce was before 2019?

Generally yes, as long as the payments meet the IRS definition of alimony: paid in cash under the divorce or separation instrument, not designated as nondeductible, not child support, not continuing after the recipient's death, and not paid while you share a household under a decree. You also need to report the recipient's Social Security number or ITIN with the deduction.

Does modifying a pre-2019 divorce agreement make alimony nondeductible?

Only if the modification expressly states that the post-2018 rules apply. A modification that simply changes the payment amount keeps the old treatment. However, if a pre-2019 separation agreement is replaced by a divorce decree executed after 2018, payments made under the new decree follow the new rules.

Is child support tax deductible?

No. Child support is never deductible by the payer and never taxable to the recipient, under either the old or new rules. Under older agreements, a payment labeled alimony that drops when a child reaches a certain age can be reclassified as child support for tax purposes.

Are property settlements in a divorce taxable?

Transfers of property between spouses, or between former spouses when incident to the divorce, generally trigger no gain or loss. The receiving spouse takes over the original owner's tax basis, so a property with a large built-in gain carries a future tax bill when it is sold.

How do I calculate the after-tax cost of alimony?

If the payment is deductible, multiply the annual amount by one minus your marginal tax rate to find the payer's after-tax cost. If it is not deductible, the cost is the full amount. For the recipient, taxable alimony is worth the amount times one minus their marginal rate, while nontaxable alimony is worth its full amount. Include state rates where your state allows the deduction or taxes the income.

Does California tax alimony?

For agreements executed on or before December 31, 2025, California still treats alimony as deductible by the payer and taxable to the recipient, even for agreements from 2019 through 2025 that get no federal deduction. Under Senate Bill 711, agreements executed after December 31, 2025, and older agreements modified to expressly adopt the change, follow the federal rule of no deduction and no income.

Where can I get answers about my own divorce agreement?

A family law attorney or tax professional should confirm how your specific agreement is treated. LegesGPT can help you prepare by answering questions about alimony and tax rules with citations to the underlying sources and by drafting settlement documents for your attorney to review.