Scenario: You both agree one person should keep the home — but you don’t know what happens next, how long it takes, or what “buying someone out” actually includes.
First: what a buyout really is
A buyout is two changes happening at the same time:
- Equity changes hands: the person leaving is paid for their share of the home’s net value.
- Responsibility changes: the person staying becomes responsible for the mortgage and the ongoing costs going forward.
Most stress in buyouts comes from unclear assumptions, not the arithmetic.
Step 1: agree on the process (before the number)
Agreeing on how you’ll decide prevents “moving the goalposts” later. At minimum:
- Valuation method: appraisal, comps, or two appraisals averaged.
- Valuation date: “as of June 30” so you’re not chasing the market week to week.
- Cost assumptions: what you include (legal fees, refinance costs, conservative selling costs, etc.).
- Timeline: target dates for valuation, financing approval, and closing.
Step 2: calculate net equity (the pool you’re splitting)
Net equity is the home’s value minus debts and agreed costs.
- Home value
- Minus: mortgage balance
- Minus: other secured debt (e.g., HELOC), if applicable
- Minus: agreed costs (legal fees, refinance costs, etc.)
Example: Value $850,000 − mortgage $540,000 − agreed costs $10,000 → net equity ≈ $300,000.
Step 3: decide the “split rule”
The buyout amount depends on your equity split rule:
- Title percentage (e.g., 50/50).
- Return deposits first, then split remaining equity.
- Contribution-based (principal, deposits, agreed renovations) if you have records and a shared definition.
Once the rule is agreed, the calculation becomes straightforward.
Step 4: financing + title updates (the part people underestimate)
A buyout isn’t just “sending money.” The person staying usually needs to qualify to carry the mortgage alone.
Common paths:
- Refinance into one person’s name (most common).
- Assumption (less common; depends on lender/terms).
- Sale instead if financing won’t work.
Then a lawyer/notary updates title so the leaving person is removed.
Step 5: clarify “in-between” rules while you wait
Buyouts take time (especially if you need an appraisal + financing approval). Decide what happens in the meantime:
- Who lives there? If one person is living there alone, is rent/occupancy credit discussed?
- Who pays what? Mortgage, taxes, utilities, maintenance.
- What about new spending? Renovations/upgrades should usually pause unless both approve.
Common friction points (and quick fixes)
- Arguing about value: agree on the valuation method before seeing the number.
- Forgetting penalties/costs: ask the lender early about break penalties and refinance costs.
- Unclear split rule: don’t mix “we’re 50/50” with “but I paid more” without a written rule.
- Dragging timelines: set deadlines for valuation, approval, and closing.
Practical takeaways
- Agree on process first: valuation method + date + cost assumptions.
- Net equity is the pool: value − debts − agreed costs.
- Financing is the gate: the person staying must qualify to carry the home.
- Write the interim rules: who pays what while you’re closing the buyout.
If you want to go deeper
For the full calculation, read How to calculate a fair buyout.
For sale alternatives, see How sale proceeds are typically split and What happens if one person wants to sell?.
Note: This guide is educational and not legal, tax, or mortgage advice. Rules and costs vary by lender and province.