- Married spouses have an automatic statutory right to equalize net family property under the Family Law Act.
- When married spouses separate, each calculates their own net family property, and the spouse with the higher figure pays the other spouse half the difference.
- A common-law partner in Ontario gets none of this by default.
Ontario treats married spouses and common-law partners very differently when a relationship ends — and property division is where that difference shows up most sharply. Many long-term common-law partners are surprised to learn that living together for years, even decades, doesn't create the same property rights that marriage does automatically.
Here's a side-by-side look at how married vs common-law property division actually differs in Ontario.
The Headline Difference
Married spouses have an automatic statutory right to equalize net family property under the Family Law Act. Common-law partners do not have that right at all, regardless of the length of the relationship. This single distinction shapes almost everything else about how each group approaches separation.
Married Spouses: Automatic Equalization
When married spouses separate, each calculates their own net family property, and the spouse with the higher figure pays the other spouse half the difference. This applies automatically by operation of law — neither spouse needs to prove entitlement to it, only calculate the numbers accurately. The matrimonial home also receives special treatment, and both spouses have an equal right to possess it regardless of whose name is on title.
Common-Law Partners: No Automatic Property Right
A common-law partner in Ontario gets none of this by default. No matter how long the relationship lasted, how much was contributed financially, or whether the couple raised children together, there is no Family Law Act equalization claim available to unmarried partners. Property generally stays with whoever legally owns it, unless the couple made other arrangements or one partner can establish a claim through general property law.
Side-by-Side Comparison
| Married spouses | Common-law partners | |
|---|---|---|
| Automatic right to equalize net family property | Yes | No |
| Special possession/encumbrance rules for the home | Yes, if it's the matrimonial home | No equivalent statutory right |
| Property division without an agreement | Governed by the Family Law Act's default formula | Governed by whoever holds legal title, absent an agreement |
| Possible spousal support claim | Yes | Yes, if the Family Law Act's own cohabitation/relationship test is met |
| Property claim through trust law | Rarely needed, since equalization applies | Sometimes the only available route |
What Common-Law Partners Can Do Instead
Without an automatic equalization right, common-law partners generally rely on:
- A cohabitation agreement, negotiated in writing and properly signed and witnessed, that sets out how property will be divided if the relationship ends
- General trust or property law claims, which require proving specific legal elements on the facts of the relationship — a more complex and less predictable path than equalization
- Joint ownership arrangements made during the relationship, since jointly held property is typically dealt with according to ownership shares regardless of the equalization question
The Matrimonial Home: A Married-Only Concept
The matrimonial home's special legal treatment — no date-of-marriage deduction, and an equal right of possession regardless of title — applies only to married spouses under the Family Law Act's matrimonial home provisions. A common-law partner living in a home titled solely to their partner has no equivalent statutory possession right or home-specific equalization protection, which makes clear title arrangements and written agreements especially important for unmarried couples sharing a home.
Frequently asked questions
Does living together for a long time eventually create the same rights as marriage?
No. Ontario does not recognize a "common-law marriage" that creates property-division rights after any length of cohabitation. The gap between married and common-law property treatment doesn't close with time.
Can common-law partners opt into something like equalization?
Yes, by written agreement. A cohabitation agreement can set out whatever property-sharing arrangement the couple negotiates — there's just no default formula to fall back on if they never made one.
Is spousal support available to common-law partners even without property rights?
Potentially, yes — spousal support and property division are separate legal questions. A common-law partner may qualify for support under the Family Law Act's own test even though they have no equalization claim.
What if my name isn't on the title but I contributed financially to a jointly used home?
This is exactly the kind of situation where a trust-based property claim may be available for a common-law partner, though it requires proving specific facts about contribution and intention rather than pointing to an automatic statutory right.
Does the length of a marriage affect whether equalization applies?
No. Equalization applies to married spouses regardless of how long the marriage lasted — a short marriage doesn't remove the statutory right, though it does affect how much net worth had time to grow and therefore the size of any resulting payment.
This is a family law question
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