Taxes on a Divorce Settlement: The 50/50 Split That Isn't.

One column of the mediation spreadsheet holds the $400,000 brokerage account. The other holds $400,000 of equity in the house. Both sides sign, and the taxes on a divorce settlement arrive three years later, when the brokerage account gets sold and one person owes $43,960 that the other never owes. The split was equal on paper. It was never equal after tax.

IRC §1041(a) says no gain or loss is recognized on a transfer of property to a spouse, or to a former spouse when the transfer is incident to divorce. That covers the house, the brokerage account, the rental, the interest in the business, the cars. Nothing goes on either return, and nobody writes the IRS a check at the closing table.

§1041(c) defines incident to divorce as a transfer that happens within one year after the marriage ends, or one related to the cessation of the marriage. Temp. Reg. §1.1041-1T, Q&A-7 puts a presumption behind the second half: a transfer made under a divorce or separation instrument within six years of the end of the marriage is related to the cessation, and one made after six years is presumed not to be. The presumption is rebuttable, but only by showing the transfer divided property the two of you owned when the marriage ended and that something genuinely held it up. Move the property inside six years.

Then read §1041(b). The transfer is treated as a gift, and the recipient takes the transferor's adjusted basis. Not fair market value, and not cost, even when one spouse actually pays the other for the asset. An account holding $150,000 of basis is still a $150,000-basis account after it changes hands, and whoever holds it owes the tax on every dollar of appreciation that happened while the marriage was intact.

One exception is worth naming. Under §1041(d), none of this applies when the spouse or former spouse receiving the property is a nonresident alien. That transfer is taxable in the ordinary way.

The order is stable enough to rank assets by without running a projection. Roth balances and home equity inside the §121 exclusion come out near face value. Taxable accounts cost 15% to 23.8% of the built-in gain, and short-term positions cost more. Pre-tax 401(k) and IRA money costs whatever bracket it comes out in, plus 10% if it's pulled before 59½ without an exception.

So ask for cost basis on every taxable account before signing, not just the December statement. The statement shows fair market value. The tax lot detail shows what the column is actually worth.

The house has its own rules, and they run in your favor. Under §121(d)(3)(A), a spouse who receives the home in a §1041 transfer adds the transferor's ownership period to their own, so the two-of-five-year ownership test is rarely the problem. §121(d)(3)(B) goes further: the spouse who moves out is still treated as using the home as a principal residence for any period the former spouse has use of it under the divorce instrument, which keeps the exclusion alive for the person who left. What does change is the size of it. A joint return excludes $500,000 of gain and a single return excludes $250,000, so a house sitting on $450,000 of gain is worth selling before the divorce is final rather than after. I walked through the gain calculation itself in a separate post.

Splitting a 401(k) or a pension takes a qualified domestic relations order, a §414(p) document the plan administrator has to approve, not a line in the decree. It's worth the trouble for a reason beyond the transfer itself: §72(t)(2)(C) exempts a distribution made to an alternate payee under a QDRO from the 10% additional tax, at any age. If one spouse needs cash out of the settlement, that is the cheapest dollar in the entire divorce.

The exception attaches to that distribution and nothing else. Roll the QDRO money into your own IRA first and it's gone, and a withdrawal at 44 costs the 10% like anyone else's. Decide about the cash before the rollover, not after.

IRAs work the other way. There is no QDRO for an IRA, and asking a custodian for one wastes a month. §408(d)(6) makes the transfer of an IRA to a former spouse under a divorce or separation instrument tax-free, and the mechanism is a trustee-to-trustee transfer or a retitling of the account. Have the custodian move it directly. A check made out to you is a distribution, taxable and penalized, and the divorce instrument doesn't fix that.

§7703(a) settles marital status as of the close of the tax year, and treats someone legally separated under a decree of divorce or separate maintenance as not married. There is no proration. A decree entered December 30, 2026 makes you single for all of 2026, or head of household if a child lived with you more than half the year and you paid more than half the cost of the home. Still married on January 1 and the only options for the whole prior year are a joint return or married filing separately, which I priced out in filing jointly versus separately.

Two more items catch people. Alimony under any instrument executed after December 31, 2018 is not deductible by the payer and not income to the recipient, because section 11051 of the Tax Cuts and Jobs Act repealed §215 and §71. Dollars labeled alimony in a 2026 decree are after-tax dollars, so a payment schedule negotiated off pre-2019 assumptions overstates what the payer can carry by their marginal rate, 24% to 37% for most people who write those checks. And a joint return filed during the marriage keeps both names on the liability: §6013(d)(3) makes it joint and several, a decree assigning the old balance to one spouse binds that spouse but not the IRS, and the way out is relief under §6015 on Form 8857.