Issues

Alimony Deduction Denied? Why the Date Decides It

The IRS says your alimony isn't deductible. Whether it is turns entirely on one date—when your divorce papers were signed. Here's how to fight back.

Your divorce was final years ago. You've deducted the alimony every year since—or you've left it off your income because someone told you it wasn't taxable. Now a notice from the IRS says it isn't alimony at all, and it wants the tax back, with a penalty and interest stacked on top.

Here's the first thing to understand, because it controls everything else: whether your alimony is deductible (or taxable) does not depend on what you call it, what your decree calls it, or what your ex agreed to. It depends almost entirely on one date—when your divorce or separation instrument was signed. Get that date wrong, and every other argument is beside the point.

This is the substantive guide to winning that fight. We'll start with the single fork you have to resolve before anything else, then walk through the seven-part test that decides whether a payment is really alimony, the one rule that sinks more pro se taxpayers than any other, and how to check the IRS's math and your full exposure. It pairs with How To Respond to a CP2000 Notice, which owns the step-by-step response procedure, and Unreported Income Disputes in Tax Court, which owns the general information-match playbook. This article owns the alimony characterization fight itself.

Step 1: Which Set of Rules Governs You? (Resolve This First)

Before you read another word about what counts as alimony, find out which tax regime your divorce falls under. There are two, and they are opposites.

In 2017, Congress passed the Tax Cuts and Jobs Act (TCJA, P.L. 115-97, § 11051). It repealed the rules that let a payor deduct alimony and required a recipient to report it as income. But—and this is the part that trips people up—the repeal does not apply to every divorce. It turns on the date the divorce or separation instrument was executed (signed) or modified.

So there are two regimes, and your execution date decides which one is yours:

Pre-2019 instruments (grandfathered). If your divorce or separation instrument was executed on or before December 31, 2018, and you haven't modified it to opt into the new rules, the old rules still apply to you. Alimony is deductible by the person who pays it (it was former IRC § 215, an "above-the-line" adjustment—a deduction you get even if you don't itemize) and taxable income to the person who receives it (former IRC § 71). This is where essentially every Tax Court alimony dispute lives, because there's nothing left to argue under the new rules.
Post-2018 instruments. If your instrument was executed after December 31, 2018, alimony is neither deductible by the payor nor taxable to the recipient. It's simply tax-neutral—like handing over after-tax cash. A reader on a post-2018 decree who deducts alimony has made an error the IRS will catch—and if you spot it before they do, you can file an amended return to back the deduction out.

How to find your date—and don't confuse it with your divorce being "final." The date that controls is when the instrument was signed or entered by the court—look for the signature/execution date or the judge's entry stamp on your divorce decree, separation agreement, or incorporated settlement agreement. That can be different from the day your divorce became "final": a settlement agreement signed in December 2018 is a pre-2019 instrument even if the divorce wasn't finalized until 2019. If you have a later modification or consent order, read it for any language that expressly invokes the TCJA or says the payments are no longer deductible or taxable—that wording is what flips you to the new rules. Silence does not.

The Modification Trap

There's a second way a pre-2019 divorce can fall under the new rules, and it's a trap. If you executed your instrument before 2019 but then modified it after December 31, 2018, the new (tax-neutral) rules apply only if the modification expressly states that the TCJA changes apply. A modification that's silent on the point leaves the old rules in force.

This is exactly what happened in DiTullio v. Commissioner, T.C. Memo. 2025-120, decided in November 2025. The original judgment of divorce was pre-2019, and there was a 2020 consent order—post-2018. But because the consent order "does not expressly provide" that the TCJA amendments applied, the repeal did not kick in, and the old § 71 analysis governed the whole dispute. The takeaway: a post-2018 modification flips you to the new rules only if it says so in words. Read your modification carefully before assuming anything changed.

"The Statute Says Repealed"—Don't Panic

If you click through to IRC § 71 or IRC § 215 on a legal site, you'll see them marked "Repealed." That does not mean alimony rules don't apply to you. It means they were repealed going forward—and your pre-2019 divorce is grandfathered under the old version. Because the statute pages now show only a historical note, your real roadmap is IRS Publication 504, Divorced or Separated Individuals, which still spells out the operative rules for instruments executed before 2019. (The full pre-repeal text of § 71 is also reproduced inside the Tax Court opinions discussed below.)

One thing that was never deductible or taxable under either regime: child support. More on that below.

What Even Counts as Alimony? The Seven-Part Test

For a pre-2019 instrument, a payment is "alimony or separate maintenance" (separate maintenance is court-ordered spousal support while you're legally separated but not yet divorced)—deductible by the payor, taxable to the recipient—only if it meets all of these requirements. They're conjunctive, which is the legal way of saying fail even one and the whole thing collapses. As the Tax Court put it in Iglicki v. Commissioner, T.C. Memo. 2015-80, "these requirements are in the conjunctive, and all must be met."

Here are the seven, drawn from former § 71 and Pub. 504:

It's cash. The payment is in cash (or a cash equivalent—a check or money order). Not property, not services, not the use of your property, and not a transferred note from a third party.
It's under an instrument. It's received by or for a spouse or former spouse under a divorce decree, a written instrument incident to that decree, or a written separation agreement.
It's not designated out. The instrument doesn't say the payment is not deductible and not taxable. (The parties are allowed to elect out of alimony treatment by saying so in writing.)
You live apart. For spouses legally separated under a decree of divorce or separate maintenance, the payor and recipient aren't members of the same household when the payment is made.
It ends at death. There's no liability to keep paying—in cash or property—after the recipient dies. This is the rule that sinks the most cases. See the next section.
It's not child support. No part of the payment is fixed (or treated) as child support.
No joint return. The spouses don't file a joint return with each other.

Most losing cases fail on requirement #1 (cash) or #5 (death). The rest are usually straightforward. Let's take the two dangerous ones in turn.

If you're the recipient, this same test is your shield. The IRS usually comes at the recipient by saying "you should have reported this as income." But a payment is only taxable to you if it actually is alimony—so the seven-part test runs in your favor too. If the money was really child support, a property settlement, or a stream that fails the death rule, it wasn't deductible to your ex and it wasn't income to you. Run the same checklist; the very facts that cost a payor the deduction can take an item right off your return.

The #1 Trap: Payments Must End at the Recipient's Death

This is the rule that catches more pro se payors than any other, so slow down here. Your obligation to pay must terminate when your ex—the recipient—dies. If you would still owe anything after that death—in cash or property, directly or as a "substitute" payment—the payments fail requirement #5, and you lose the deduction.

And the failure is total. As Iglicki explained, "if the payor is liable for even one otherwise qualifying payment after the payee's death, none of the related payments required before death will qualify as alimony." One bad clause can disqualify the entire stream of payments, including all the ones you made while your ex was alive.

Here's the two-step the court runs:

Read the instrument first. If your divorce or separation document expressly says the payments stop when the recipient dies, you're fine. If it says they continue—pass to the estate, convert to something else, or get paid to a third party after death—you fail.
If the instrument is silent, look to state law. Many decrees say nothing about death. When that happens, the court asks whether the payments would terminate at death automatically under your state's law. If state law clearly cuts them off, you can still satisfy the rule. If your state's law is ambiguous, the federal court won't wade into "complex, subjective inquiries under state law"—instead it reads the document's own words and decides from there.

This is where pro se payors lose, because the instrument is often silent and they simply assume the obligation would have ended at death. The controlling document, read literally, sometimes says otherwise—and the estate could have enforced it. Four real cases show the patterns:

The instrument expressly survives death. In Sperling v. Commissioner, T.C. Memo. 2009-141—a pro se case—the property-settlement agreement contained a "Binding Nature" clause saying any unfulfilled terms "shall become an obligation of the executor or administrator of the estate of either party." That single clause made the payor's liability survive the ex-wife's death, so the payments weren't alimony and the deduction was disallowed. The payor argued that a separate "general mutual release" clause cut off the liability; the court rejected it. The lesson: one boilerplate sentence you never noticed can decide the case.

Silent instrument, but arrears reduced to a judgment. In Iglicki, Colorado law would have ended future maintenance at death by statute. But the payor was paying arrears—back maintenance that had been reduced to a final money judgment. Under Colorado law, a money judgment survives death and can be enforced against the estate. So those payments failed the death rule, the deduction was disallowed, and a penalty was added on top. A useful warning if you're paying off back support: arrears reduced to a judgment often behave very differently from ongoing support.

Substitute payments kill the whole stream. In Okerson v. Commissioner, 123 T.C. 258 (2004), the decree said alimony stopped at the ex-wife's death—good so far—but then required the payor to start directing the remaining amounts toward the children's college costs and to her attorney. Those post-death obligations were "substitute payments," and they tainted the pre-death payments too. Two points the court drove home: it didn't matter that the ex-wife was still alive and the payor never actually had to make a post-death payment—the potential liability is what counts. And a state court's later order declaring that it "intended" the payments to be deductible alimony does not control the federal tax answer.

A property buyout dressed up as support. In DiTullio (2025), the payor wrote a $50,000 check labeled "Equitable Pension Distribution—Lump Sum," memorialized in a silent consent order. New Jersey law was ambiguous, so the court read the documents and found the $50,000 obligation would have been enforceable by the ex-wife's estate had she died first. Not alimony.

Reader takeaway: under a pre-2019 instrument, the single most important sentence is "all payments terminate on the death of the recipient and no substitute payments are owed." If your instrument lacks it, your deduction is at risk—and you have to research your state's default rule. Future support usually ends at death by statute; arrears reduced to a judgment usually do not; property-division obligations usually do not.

Child Support Is Never Alimony

Child support is never deductible and never taxable—under either regime. Former § 71(c) is blunt: any part of a payment that the instrument "fixes" as a sum payable for the support of the payor's children is not alimony. Pub. 504 confirms alimony also doesn't include noncash property settlements, your spouse's share of community income, payments to keep up your own property, or the use of your property.

But there's a subtler trap—the child-contingency recharacterization rule. Even if your instrument labels an amount "alimony," it gets treated as child support to the extent it is reduced:

on a contingency relating to a child—the child reaching a certain age or majority, dying, leaving school, marrying, leaving the household, becoming employed, or reaching an income level; or
at a time that can be "clearly associated" with such a contingency.

Pub. 504 builds in two temporal presumptions for that second prong. A reduction is presumed to be tied to a child if either:

the payments drop not more than 6 months before or after the date a child turns 18, 21, or the local age of majority (the "6-month rule"); or
the payments drop on two or more occasions that fall within a year of when different children reach a certain age between 18 and 24 (the "multiple-children's-ages rule").

These presumptions are rebuttable—you (or the IRS) can overcome them by showing the timing was set by something independent of the children, like a reduction scheduled at the halfway point of the marriage's length. But you have to make that showing affirmatively.

One quiet ordering rule catches underpayers: if your instrument calls for both alimony and child support and you pay less than the full amount due, the money applies first to child support, then to alimony. You can't choose to short the (nondeductible) child support and deduct the rest.

Note the boundary here. Whether a payment is child support (§ 71(c)) is a different question from who gets to claim the child on a return. For the second fight—dependents, the child tax credit, Form 8332—see Dependency Claim Disputes in Tax Court and Child Tax Credit Disputes in Tax Court. This article doesn't re-litigate those.

The Front-Loading Surprise: Alimony "Recapture"

Here's a rule that can bite a payor who "did everything the decree said." If your alimony drops sharply in the first three years, the IRS can force you to recapture part of it—add it back into your income—in year 3. This is § 71(f), and it exists to stop people from disguising a one-time property settlement (not deductible) as front-loaded "alimony" (deductible).

The 3-year window is the first three calendar years in which you make a qualifying alimony payment. The $15,000 trigger fires if either:

your year-3 alimony is more than $15,000 less than your year-2 alimony; or
your year-2 alimony is significantly less than your year-1 alimony (specifically, year-1 exceeds the average of the adjusted year-2 and year-3 amounts by more than $15,000).

If recapture applies, in year 3 the payor reports the recaptured amount as income and the recipient deducts the same amount—a mirror reversal of the earlier deductions.

Here's Pub. 504's own worked example. Say you pay $50,000 in year 1, $39,000 in year 2, and $28,000 in year 3. Running Pub. 504's Worksheet 1:

Year-2 recapture = $39,000 − ($28,000 + $15,000) = $0 (it's not more than zero, so enter zero).
Adjusted year-2 = $39,000 − $0 = $39,000.
Year-1 recapture = $50,000 − [(($39,000 + $28,000) ÷ 2) + $15,000] = $50,000 − [$33,500 + $15,000] = $1,500.
Total recaptured = $0 + $1,500 = $1,500.

So in year 3, you report $1,500 as income and your ex deducts $1,500. A payor who agreed to a big-then-small schedule can get a year-3 income surprise without ever missing a payment.

There are real exceptions where recapture does not apply:

payments end or drop because either spouse dies or the recipient remarries before year 3 ends;
payments under a temporary support order (these are left out of the calculation entirely); or
payments that fluctuate because they're a fixed percentage of income from a business, property, or job for at least 3 years—swings outside your control.

Recapture only applies to pre-2019 instruments. There's nothing to recapture under the tax-neutral post-2018 regime.

How It Gets Reported—and Why the IRS Catches It

The reporting mechanics are simple, and they're exactly how these disputes get triggered. For a pre-2019 instrument:

The payor deducts alimony on Schedule 1 (Form 1040), line 19a, enters the recipient's SSN or ITIN on line 19b, and the month and year of the original instrument on line 19c.
The recipient reports alimony received on Schedule 1, line 2a, with the instrument's month and year on line 2b.

That recipient-SSN requirement isn't a formality. Pub. 504 warns the payor: "If you don't provide your spouse's SSN or ITIN, you may have to pay a $50 penalty and your deduction may be disallowed." The recipient gets the same $50 warning for not handing over their number.

Here's why the IRS catches the mismatch. Because your deduction lists your ex's SSN, the IRS can match your two returns against each other. If the payor deducts $24,000 but the recipient reports $0 in alimony income, the discrepancy surfaces automatically—and at least one of you is wrong. That mismatch is a classic route to a notice. The recipient who left the income off typically gets a CP2000 notice; the payor whose deduction is challenged gets an examination and, eventually, a notice of deficiency.

A few watch-outs from Pub. 504:

Payments to a third party on your spouse's behalf—rent, mortgage, tuition, medical bills, or premiums on a life-insurance policy your spouse owns on your life—can be alimony if they otherwise qualify.
Payments to keep up your own property, or to let your spouse use your property, are not alimony.
Voluntary payments not required by the instrument are not alimony.

And remember: post-2018 instruments report nothing—no line 19a deduction, no line 2a income.

What You're Really Facing: The Full Exposure Picture

An alimony notice is rarely just the tax. Build the whole picture so nothing blindsides you.

The deficiency itself. On the payor side, it's the lost deduction multiplied by your marginal rate. Because the old alimony deduction was above-the-line, losing it raises your adjusted gross income (AGI)—which can ripple into AGI-sensitive items like the medical-expense floor, IRA-deduction phaseouts, the taxability of Social Security, and the ACA premium tax credit. A concrete feel: a $24,000 disallowed deduction at a 22% rate is about $5,280 of tax per year. And the IRS usually hits every open year—so a three-year exam can be roughly $16,000 before penalties and interest. On the recipient side, it's the added income times your rate, plus any credit phaseouts the higher AGI triggers.

The 20% accuracy penalty—and the defense. The IRS commonly stacks a 20% accuracy-related penalty under IRC § 6662 for negligence or a "substantial understatement" (an understatement is substantial if it tops the greater of 10% of the correct tax or $5,000). The two alimony cases show both outcomes. In Iglicki, a $10,479 deficiency produced a $2,096 penalty, and the court sustained it because the petitioners offered no reasonable cause. In DiTullio, the IRS conceded the penalty—the payor had relied on a paid tax preparer who told him the $50,000 was deductible. That contrast is the whole game: good-faith reliance on a professional, or a genuine but mistaken reading of a silent instrument, is the template for the reasonable-cause defense under IRC § 6664(c). The full penalty playbook lives in How To Fight the IRS Accuracy Penalty.

Interest—and it's not waivable. Interest runs on any deficiency from the original due date of the return until it's paid under IRC § 6601, compounds daily, and—unlike penalties—generally cannot be abated for reasonable cause. The rate is the § 6621 underpayment rate, reset quarterly; across 2026 it has sat in the 6–7% range, but don't hard-code a number—check the live IRS quarterly interest rates table. To put it in scale: a ~$15,000 deficiency at ~7% compounded daily runs roughly $1,050 in interest in the first year alone—and these cases often span several tax years and years of exam and litigation, so the interest leg can rival a full year's tax. Fixing the number fast is the only way to stop the bleed. See How Interest Works on Your IRS Tax Debt.

Put the legs together. On a single disallowed year—say that $24,000 deduction—you're realistically looking at about $5,300 in tax, potentially another ~$1,060 if the 20% penalty sticks, and interest compounding on top: an all-in figure that can clear $6,500 for one year alone, before you multiply it across every open year. That total—not the headline tax—is the number to weigh against the cost and odds of fighting.

The Appeals fork before Tax Court. You usually don't have to wait for a notice of deficiency to fight. An alimony dispute typically starts as a correspondence or examination matter, and you can ask for IRS Appeals—an independent review—before a deficiency is issued, by filing a protest in response to the 30-day letter or examination report. Appeals weighs the "hazards of litigation," and alimony cases are fact-specific enough (what does the instrument say? what does state law do when it's silent?) that a well-documented protest can settle. See How To Request an IRS Appeals Conference. If Appeals fails or is skipped and a notice of deficiency issues, your 90 days Tax Court clock starts (150 days if the notice was addressed outside the US). See What Happens After IRS Appeals Denies Your Case.

Can the IRS even still do this? The IRS generally has 3 years from when you filed to assess more tax, so a challenged alimony deduction is well within normal reach. Check the dates on your notice against Understanding IRS Statutes of Limitations.

If the IRS is right and you can't pay. Sometimes the deduction really was bad—a post-2018 payor who deducted anyway, a buyout dressed up as support, a stream that fails the death rule. Conceding the tax doesn't mean writing one big check today. The IRS has 10 years to collect from the date it assesses, and there are structured ways to carry the bill: an installment agreement to pay over time, currently not collectible status if you genuinely can't pay anything right now, or an offer in compromise to settle for less than the full amount. How To Resolve Your IRS Tax Debt maps the options.

How To Verify the IRS's Number

Before you concede a dollar, pin down exactly what the IRS used—and build your own clean number. Every step here is something you can do yourself.

Pull the exact instruments. Get the decree, any property-settlement agreement incorporated into it, and any later modification or consent order. The whole case turns on the words on the page (Sperling, DiTullio). Read them the way the court will—literally—looking for a death-termination clause, any substitute-payment or "binding on estates" language, and any "not deductible" designation.

Research your state's default rule. If the instrument is silent on death, your state's law is the fallback for requirement #5. Find out whether a silent maintenance obligation ends at the recipient's death—and separately, whether any arrears reduced to a judgment survive death in your state. This is genuinely hard to run down alone; if you qualify, a Low Income Taxpayer Clinic can help you find your state's rule.

Pull your transcripts. The Account transcript (free, through IRS.gov) shows what's been assessed and how the exam or notice posted. If your dispute is recipient-side—the IRS says you should have reported alimony income—the Wage & Income transcript shows what the payor reported. The deeper transcript discipline is owned by How To Get and Read Your IRS Transcripts.

Separate the buckets and recompute. Confirm how much of each payment the instrument fixed as child support (never alimony), run the § 71(c) child-contingency test, and—if your payments dropped in the first three years—run the recapture worksheet. Often the correct deductible number is smaller than you claimed but larger than the IRS allowed; meeting in the documented middle is how these settle.

Know where the burden sits. A deduction is a matter of "legislative grace," and the payor carries the burden of proving the payment meets every element of the test. The Tax Court has repeated this for nearly a century, citing Welch v. Helvering, 290 U.S. 111 (1933) and INDOPCO, Inc. v. Commissioner, 503 U.S. 79 (1992)—both quoted in the alimony cases. The notice of deficiency is presumed correct, so plan on the burden being yours and win it with documents: the instrument's literal text, your state-law brief, proof you actually paid cash (canceled checks, bank records—not a note or property, as the payor learned the hard way in Lofstrom v. Commissioner, 125 T.C. 271 (2005), where a transferred contract for deed failed the cash requirement), the child-support allocation, and the recapture worksheet. One thing that's irrelevant: intent. Even a state court's stated intent doesn't control—only the legal effect of the document's words matters (Okerson).

Don't Confuse Alimony With a Property Settlement

A lot of these cases are really one mistake: the payor tried to deduct what was actually a division of marital property, not support. The two are different tax events.

Alimony (former § 71/§ 215) is periodic support the payor could deduct and the recipient included—pre-2019 only.
A property settlement or transfer incident to divorce (the house, a brokerage account, a pension split by QDRO) is a division of what you already jointly owned. Under IRC § 1041, no gain or loss is recognized on a transfer to a spouse or former spouse incident to divorce, and the recipient takes the transferor's basis. A property division is never deductible.

That's why payors lose when they deduct a buyout—Lofstrom's contract for deed and DiTullio's pension lump sum were property, not alimony. And note: a pension split by a QDRO is a plan-distribution mechanic, not alimony at all. For that side, see Retirement Distribution Disputes in Tax Court.

What To Do Now

If an alimony notice is in front of you, here's the sequence:

Find your execution date and resolve the regime. Pre-2019 instrument, not modified to opt in? The old deductible/taxable rules apply. Post-2018 instrument (or a pre-2019 one with a modification that expressly adopted TCJA)? Alimony is tax-neutral and shouldn't be on the return at all.
Identify which notice you're holding—and whether a clock is running. These disputes climb a three-rung ladder: first a CP2000 or a 30-day letter/examination report (no Tax Court clock yet—you can still respond or take it to Appeals), then a 90-day letter (Notice of Deficiency) (the clock is running—you have 90 days to petition Tax Court, 150 days if the notice was addressed outside the US, and it cannot be extended). Not sure which one you have? Common IRS Notices and Letters helps you pin it down.
Pull and read the instrument—plus every modification—looking for the death-termination clause, substitute-payment language, and any child-support fix.
Run the seven-part test against your facts, paying special attention to the cash and death-contingency requirements, and research your state's default death rule if the instrument is silent.
Recompute the deductible number—back out child support, apply the child-contingency rule, run the recapture worksheet—and pull your Account (and, if recipient-side, Wage & Income) transcripts to verify the IRS's figures.
Consider Appeals before, or Tax Court after, the deficiency. A documented protest to IRS Appeals can settle a fact-specific alimony case without a petition. If you do petition, filing is $60 (with a waiver available). Most of these disputes are small-dollar—the deficiencies in the cases above ran from about $1,400 to $12,000—so they fit comfortably under the $50,000 ceiling for the simpler "S case" procedure. See How To File Your Tax Court Petition.
Expect to resolve before trial. Most (76%) of Tax Court cases close by formal settlement. The alimony cases above were nearly all decided on stipulated records, not full trials—these turn on documents, not testimony. See How To Settle Your Tax Court Case.

One more thing to plan for: a change to your federal alimony treatment usually changes your state tax too, since most states pick up federal adjustments automatically.

Around 89% of petitioners represent themselves, though the win rate trails represented petitioners (about 12% pro se versus about 23% represented in the most recent data). You don't have to go it alone: if your income is at or below 250% of the poverty line and your dispute is at or below $50,000, a Low Income Taxpayer Clinic may take your case for free. That's not theoretical—in DiTullio, the taxpayer (who couldn't afford a lawyer in the divorce itself) was represented in Tax Court by a law-school tax clinic, and the IRS ended up conceding the penalty.

If you've left an innocent spouse problem hiding in here—a joint return with the ex where you don't think the liability should be yours—that's a separate remedy; start with How To Request Innocent Spouse Relief.

Resources

Statutes and regulations:

IRS guidance and publications:

Companion articles on TaxCourtHelp:

Cases cited:

This article is for informational purposes only and does not constitute legal or tax advice. For advice specific to your situation, consult a qualified tax professional or attorney.