Splitting the House
The family home is the hardest asset to divide: illiquid, emotionally loaded, and — for anyone who financed during the low-rate years — often carrying a mortgage worth more than the equity conversation admits. The old playbook was sell and split, or one spouse refinances to buy the other out. The refinance route now carries a hidden cost. A household holding a 3% mortgage and refinancing a buyout at today’s rates is not merely borrowing; it is destroying a below-market liability that is itself a valuable asset (section “Your House as an Asset”). Trading it away to extract a buyout can cost more than the buyout.
Two alternatives preserve the cheap debt. An asset swap — “you take the $1 million brokerage account, I keep the $1 million of home equity and the low-rate mortgage” — works, provided the two sides are valued accurately: a taxable brokerage account carries an embedded capital-gains bill, and home equity carries selling costs, so a dollar of each is not a dollar of the other. Or structured co-ownership after the divorce: one spouse stays, the other is bought out on a fixed future trigger — a date, a sale, a child’s graduation — under a written agreement covering who pays the mortgage, taxes, and repairs and how appreciation is divided. Co-owning with an ex-spouse demands a tighter contract than co-owning with a stranger.
The Deed Is Not the Note Whatever the split, do not confuse transferring title with transferring the debt. A quitclaim deed moves ownership; it does nothing to the mortgage note, and the lender is not a party to your decree. A departing spouse who signs over the house and stays on the loan remains fully liable for every missed payment, carries the entire balance in their debt-to-income ratio — often enough to block their own next mortgage — and hands their credit report to an ex with no incentive to protect it. The decree must require the occupying spouse to refinance or formally assume the loan by a fixed date, with forced sale as the remedy for missing it. “The house is yours and the payments are your problem” is not a term any lender has agreed to.
One tax trap is quiet but expensive. Married couples exclude up to $500,000 of gain on the sale of a primary home; single filers exclude only $250,000 ( IRC §121, “Exclusion of gain from sale of principal residence”, section “Selling Primary House”). Sell while still married and file jointly for that year, and the $500,000 shelter survives. Sell years later as the sole, single owner of a long-held and highly appreciated house, and half the exclusion is gone — on a $1.2 million gain that is $250,000 of additional taxable gain, roughly $92,000 of federal and California tax for nothing but bad sequencing.
Two provisions of §121 exist precisely to rescue the spouse who moves out, and both have to be written into the decree, not assumed. Under IRC §121(d)(3)(A), a spouse who receives the house in a IRC §1041 transfer tacks the transferor’s period of ownership, so the two-year ownership test is never restarted by the divorce. Under IRC §121(d)(3)(B), the out-spouse is credited with the use of the home during any period a former spouse is granted occupancy under a divorce or separation instrument — which means the departing spouse who retains a half interest can still claim their $250,000 exclusion on a sale a decade later, but only if the occupancy right appears in the instrument. If the decree merely says the resident spouse “may remain in the home,” get it redrafted to grant occupancy under the divorce instrument. That sentence is worth up to $250,000 of excluded gain.