- Under the Family Law Act, each spouse's net family property is calculated separately, then compared.
- List everything you owed on your date of separation — credit cards, lines of credit, loans, mortgages, tax debt, and anything else outstanding.
When people picture equalization, they usually picture assets — the house, the pension, the investments. Debts reduce net family property just as directly, and forgetting to account for them is one of the most common ways an equalization calculation goes wrong.
Ontario's Family Law Act doesn't ask what each spouse owns in isolation. It asks what each spouse is worth — assets minus liabilities — at two points in time, and shares the growth between them. Get the debt side of that equation wrong, and the whole number is wrong.
Here's how liabilities actually factor into the calculation, and what to gather before you or your lawyer runs the numbers.
The Basic Equalization Formula, In Plain Terms
Under the Family Law Act, each spouse's net family property is calculated separately, then compared. In general terms, each spouse's number is:
(Value of everything you own on the date of separation, minus everything you owe on that date) minus (value of everything you owned on the date of marriage, minus everything you owed on that date).
The spouse with the higher net family property typically owes the other spouse a payment to equalize the difference — hence "equalization." Certain assets, like most gifts and inheritances from third parties received during the marriage, are excluded from this calculation, and the matrimonial home gets special treatment. But the core structure — assets minus debts, compared across two dates — applies to everyone.
Step-by-Step: How Debts Fit Into the Calculation
- List everything you owed on your date of separation — credit cards, lines of credit, loans, mortgages, tax debt, and anything else outstanding.
- List everything you owed on your date of marriage — this matters just as much as your assets on that date, since it's netted against them.
- Subtract debts from assets on each date to get your net worth at each point in time.
- Compare the two net-worth figures. The increase between your date-of-marriage net worth and your date-of-separation net worth is, broadly, what gets shared with your spouse — subject to any exclusions and the matrimonial home's special rules.
- Do the same for your spouse, then compare the two results to see who owes an equalization payment to whom.
A debt that existed at both dates — a student loan you carried into the marriage and still owe some of, for example — is reflected on both sides of the calculation, not just one.
Debts That Reduce Your Number vs. Debts That Don't
| Generally counted | Generally more complicated |
|---|---|
| Credit card balances, personal loans, lines of credit | Contingent liabilities, like a personal guarantee on someone else's loan |
| Mortgages and home equity lines of credit | Business debts tied to a corporation you own shares in (the debt usually stays inside the company; only your share value is affected) |
| Student loans | Debts you incurred after separation, which generally aren't included |
| Tax debt owed as of the relevant date | Debts one spouse disputes as not genuinely owed, or incurred in bad faith |
This is a general guide, not an exhaustive list — anything you owe money on is worth raising with your lawyer so it can be assessed properly rather than assumed in or out.
The Date-of-Marriage Debt Deduction
Debt you brought into the marriage matters for the calculation, not just debt you have now. If you owed money on your date of marriage, that debt is subtracted from whatever you owned at that time, which lowers your date-of-marriage net worth. Because equalization measures the growth between the two dates, a debt that existed before the marriage and that you're still carrying doesn't unfairly inflate what's shared with your spouse — it's accounted for on both ends.
The one major exception is the matrimonial home: its value on the date of marriage doesn't get credited back the way other assets do, even if you owned it before you married. That rule is specific to the home itself, not to debts secured against it — a mortgage or home equity line of credit is still generally subtracted as a debt on whichever date it existed.
If the math for either date works out negative — more debt than assets — talk to your lawyer about how that's specifically treated in the calculation, since the mechanics can get technical.
Getting the Numbers Right: A Documentation Checklist
Before you or your lawyer can run an accurate equalization calculation, gather:
- [ ] Credit card and line of credit statements as close as possible to both your date of marriage and date of separation
- [ ] Loan agreements and current balances (student loans, car loans, personal loans)
- [ ] Mortgage statements and any home equity lines of credit
- [ ] Any tax debt owed to the CRA as of the relevant dates
- [ ] Records of any debt paid off, refinanced, or transferred during the marriage
- [ ] Documentation of any debt you believe your spouse incurred without your knowledge
Both spouses have a legal obligation to fully and honestly disclose their finances — debts included — and incomplete disclosure is one of the most common sources of disputes and delay in these cases.
Frequently asked questions
Does it matter whose name the debt is in?
For the equalization calculation, a debt is generally attributed to whichever spouse legally owes it, regardless of whether it's connected to a shared expense. A joint debt is typically split between both spouses' calculations; an individual debt belongs to the person who owes it.
What if I can't find my old financial records from years ago?
Bank and credit card statements, loan documents, and credit reports can often be reconstructed even years later. Your lawyer can advise on what's realistically obtainable and how courts approach cases with incomplete historical records.
Can my spouse's debt reduce what I'm owed?
Yes — your spouse's debts reduce their own net family property, which can reduce the equalization payment they owe you, or in some cases mean you owe them instead. That's exactly why full and accurate debt disclosure from both sides matters so much.
Are debts incurred after we separated counted?
Generally not. The calculation is based on your date of separation (valuation date), so debt taken on afterward typically doesn't factor into your date-of-separation number, though the specifics can depend on the facts.
This is a family law question
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