Common-Law Separation and Debt Division in Canada: Why Property Rules Are Different Than Divorce

Married couples in Ontario get equalization of net family property on separation — a legal formula that divides the value built up during the relationship, debts included. Common-law couples in the same province get none of that. No formula. No automatic 50/50 split. No court process that looks at what either partner brought in or built up, unless a cohabitation agreement exists or a specific provincial statute says otherwise. This surprises people constantly, and by the time they find out, they’ve often already made financial decisions based on the wrong assumption.

Here is how debt actually gets divided when a common-law relationship ends in Canada — and where the rules genuinely differ by province.

The Core Difference: No Automatic Equalization in Most Provinces

Ontario’s Family Law Act creates a specific legal mechanism for married spouses: net family property equalization. On separation, each spouse calculates the value of what they owned at the date of marriage versus the date of separation, subtracts debts, and the spouse with the higher net gain pays the other roughly half the difference. This process explicitly includes debt — a spouse who accumulated $40,000 in credit card debt during the marriage affects the equalization calculation.

Common-law partners in Ontario are excluded from this regime entirely, regardless of how long they lived together or how many children they share. Each partner walks away with what is legally theirs: assets in their name, debts in their name. There is no equalization payment, no formula, and no court-ordered redistribution of individual debt.

“The number one myth I hear from common-law clients is ‘we were together 12 years, so it’s basically the same as divorce.’ It isn’t. Ontario law draws a hard line at the marriage certificate for property division. Length of cohabitation doesn’t change that.” — Family Law Practitioner, Ontario

This means the debt question for common-law separation usually comes down to one thing: whose name is on it?

Individual Debt vs Joint Debt: The Only Distinction That Matters

Regardless of marital status, Canadian law recognizes exactly two categories of debt liability between partners:

Individual debt — the debt is in one partner’s name only. That partner owes it. The other partner owes nothing, has no claim to any related asset, and separation changes nothing about who is responsible.

Joint debt — both partners’ names are on the account, loan, or line of credit. Both partners are equally liable for 100% of the balance under joint and several liability, the same legal principle that governs joint credit card debt in a divorce. The creditor does not care whether the relationship was common-law or married, or whether it has ended — both names on the account means both people owe the full amount until it’s paid, refinanced into one name, or discharged through insolvency.

The practical result: in a non-equalization province, a common-law partner who ran up $30,000 in individual credit card debt during the relationship walks away owing all $30,000 personally — their ex-partner owes nothing and has no legal exposure. In an equalization province between married spouses, that same $30,000 could reduce what the debt-holding spouse owes the other spouse in the equalization payment, effectively spreading some of the financial impact.

Provinces Where Common-Law Property Rules Are Different

A handful of provinces have modernized their family property legislation to extend equalization-style rights to common-law partners after a qualifying period. This is a real and meaningful exception to the general rule above.

This table changes as provincial legislation evolves — always confirm current rules with a family law lawyer in your specific province before assuming either outcome. The gap between BC/Saskatchewan and Ontario/Quebec on this point is substantial and catches people who assume “common-law” means the same thing everywhere in Canada.

Support Obligations Are a Separate Question From Property Division

Property and debt division is governed by different rules than spousal support. A common-law partner can potentially claim spousal support in a province that denies them automatic property equalization, because support eligibility usually turns on a different threshold — typically a set period of cohabitation (often 2-3 years) or having a child together, defined in each province’s family law legislation.

Support obligations, if ordered by a court, are themselves non-dischargeable in bankruptcy and consumer proposals — the same rule that applies to spousal and child support arising from a marriage. See the complete list of non-dischargeable debts for how support obligations survive insolvency regardless of relationship type.

Real-World Scenarios

Scenario 1: Ontario, no equalization, individual debt stays put. Deepa and Marcus lived common-law in Toronto for 9 years. Deepa has $22,000 in personal credit card debt from her own spending; Marcus has none. On separation, Marcus owes nothing toward Deepa’s debt and has no equalization claim against her — even though they were together nearly a decade. Deepa’s only paths forward are paying it down herself, a debt consolidation loan, or a consumer proposal if the balance is unmanageable alone.

Scenario 2: Joint debt survives regardless of relationship status. Ryan and Alicia, common-law in Calgary, opened a joint line of credit together for a shared vehicle purchase. They separate after 4 years with an $18,000 balance remaining. Both remain 100% liable — the joint and several liability rule applies exactly as it would for a married couple. Neither can walk away from the balance simply because the relationship ended.

Scenario 3: British Columbia, equalization applies. Jasmine and Devon lived common-law in Vancouver for 3 years. Under BC’s Family Law Act, they qualify as “spouses” for family property purposes. Devon accumulated significant debt financing a business during the relationship; Jasmine’s assets grew from a work bonus. On separation, BC’s family property equalization process applies nearly the same as it would for a married couple — Devon’s debt and Jasmine’s asset growth both factor into the calculation.

Scenario 4: Cohabitation agreement changes everything. Priya and Sam, common-law in Ontario for 7 years, signed a cohabitation agreement early in the relationship specifying that all debts and assets remain individual regardless of duration, and additionally agreeing to split the cost of a shared vehicle loan 50/50 if they separate. When they split, the agreement — not the default provincial rule — governs the vehicle loan split, while everything else follows Ontario’s default (no equalization).

What to Do If You’re Separating From a Common-Law Partner With Debt

1. Confirm your province’s specific rules. Do not assume Ontario’s rules apply if you live in BC, Saskatchewan, or another province with extended common-law property rights — the outcome can be entirely different.
2. Identify every joint account and co-signed obligation. These carry liability regardless of what province you’re in or how the relationship is characterized.
3. Pull your credit report to see exactly what accounts show your name — through a free Equifax report or directly from TransUnion.
4. Check whether a cohabitation agreement exists that overrides the default provincial rule.
5. If your individual debt is unmanageable on your own, a consumer proposal is filed individually and does not require your ex-partner’s involvement or consent — your former relationship status has no bearing on your right to file.
6. If joint debt is part of the problem, understand that filing your own consumer proposal resolves only your liability — your ex-partner still owes their share to the creditor unless they file separately.

Your Next Step

Common-law separation debt questions are genuinely province-specific in a way that divorce debt questions are not — the Divorce Act is federal, but family property legislation is provincial, and common-law treatment varies sharply from BC to Ontario to Quebec. Confirm your specific province’s rules with a family law lawyer before assuming either the “we split everything” or “everything stays separate” outcome.

If your own individual or joint debt is unmanageable regardless of how property division shakes out, book a free consultation with a Licensed Insolvency Trustee to understand your options. A consumer proposal or bankruptcy addresses your debt exposure directly and does not depend on resolving the property division question first.

This article provides general information and should not be considered legal advice. Family property law varies by province and individual circumstances — consult a family law lawyer for advice specific to your situation.