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 honestly: 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.
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, or under the divorce-specific timing provisions, 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.