How the buyout math works
A house buyout starts with equity, not the home's sale price. The calculator first subtracts the mortgage and any other liens from the agreed market value. That produces total home equity. If the house is marital property, that equity is the part of the marital estate being divided. If only a portion is marital because one spouse owned the home before marriage or used separate funds for the down payment, the marital portion should be entered after you and your attorney account for that tracing issue.
The core formula is straightforward: home value - mortgage - liens = equity. Then the other spouse's ownership share determines the buyout: equity x departing spouse share = buyout amount. In a typical equal split, a $425,000 home with a $260,000 mortgage has $165,000 of equity, and the departing spouse's 50% share is $82,500. If the spouses agree to a 60/40 property split, the buyout changes because the equity share changes.
The legal logic is the same as the main asset division calculator: courts divide the value of the marital asset, not necessarily the physical item. One spouse can keep the house if the other spouse receives equal value through cash, refinancing proceeds, retirement funds, savings, or a larger share of other assets. The buyout is the equalizing payment that keeps the property division balanced.
Funding the buyout is often harder than calculating it. If both names are on the mortgage, the spouse keeping the home usually needs to refinance so the departing spouse is no longer liable to the lender. The calculator's refinance scenario adds the current mortgage balance to the buyout amount, because the new loan must both pay off the old loan and create enough cash to pay the other spouse. It also estimates loan-to-value so you can see whether the new loan is likely to be realistic.
The sell-and-split scenario answers a different question: what would each spouse receive if the home were sold instead? It subtracts estimated selling costs from the market value, pays off liens, and divides the net proceeds. That comparison is important because a buyout that looks fair on paper may not beat selling once refinance rates, closing costs, maintenance, and future capital-gains exposure are considered.
The offset scenario is for settlements where the staying spouse keeps the home but does not pull cash from the property. Instead, the other spouse receives more of another asset, such as a bank account, brokerage account, or retirement balance. Offsets can simplify a case, but they need careful tax treatment. A dollar of home equity, a dollar of Roth IRA value, and a dollar of pre-tax 401(k) value are not always economically identical after taxes and penalties.
Run your own numbers above, then estimate the rest of the settlement with the asset division calculator or read the full buyout guide. The strongest negotiation position is not "I want the house"; it is "Here is the agreed value, the equity, the other spouse's share, and a funding plan the lender can actually approve."
Frequently Asked Questions
How do you calculate a house buyout in a divorce?
Find the equity — market value minus the mortgage and any liens — then multiply by the other spouse's ownership share (often 50%) to get their buyout amount. To fund it, you typically refinance the mortgage for the old balance plus the buyout, if the home's value supports that new loan.
How do you decide the home's value for a buyout?
Most couples use a professional appraisal or agree on a figure from a real-estate agent's comparative market analysis. Using one neutral appraiser you both accept avoids each side picking a self-serving number. The buyout is only as accurate as the value you agree on.
Is a house buyout in a divorce taxable?
Generally no — the IRS treats property transfers between divorcing spouses as non-taxable at the time of transfer. But the spouse who keeps the home takes on its cost basis, which can affect capital-gains tax if they sell later. This is general information, not tax advice.
Do I have to refinance to buy out my spouse?
Usually, if both names are on the mortgage. Refinancing removes your spouse from the loan and can provide the buyout cash. A divorce decree alone does not remove anyone from a mortgage — until you refinance or pay it off, both spouses remain responsible to the lender.