- Under the Family Law Act, equalization of net family property — the mechanism that lets a separating married spouse claim a share of growth in the other spouse's net worth, including…
- To understand the gap, it helps to see what the common-law partner is missing out on:
- Since the FLA's equalization scheme is off the table, common-law partners in Ontario looking for some share of a former partner's pension or retirement assets generally have to look to…
A married spouse who separates in Ontario has a statutory right to share in the value their partner's pension gained during the marriage, as part of equalization of net family property. A common-law partner, after a relationship of any length, does not have that same right. This is one of the sharpest legal differences between married and unmarried couples in Ontario, and it catches long-term common-law partners off guard more often than almost any other gap in the law.
Here's how pension division actually works — and doesn't work — for common-law couples, and what alternatives exist.
The Core Rule: No Automatic Pension-Sharing Right
Under the Family Law Act, equalization of net family property — the mechanism that lets a separating married spouse claim a share of growth in the other spouse's net worth, including pension value built up during the marriage — applies only to married spouses. Common-law partners have no equivalent statutory right, regardless of how many years they lived together or how much of the pension's value accumulated during the relationship.
This means a common-law partner who was together with their partner for a long relationship, contributed to household finances, and perhaps even sacrificed their own career or pension contributions to support the household, still has no automatic legal claim to a share of their former partner's workplace pension, CPP credits, or retirement savings simply by virtue of the relationship having existed.
What a Married Spouse Would Get, By Comparison
To understand the gap, it helps to see what the common-law partner is missing out on:
| Married spouse | Common-law partner | |
|---|---|---|
| Statutory right to share pension value built during the relationship | Yes, via FLA equalization | No |
| Automatic property-sharing right of any kind on separation | Yes | No |
| Possible spousal support claim | Yes | Yes, if the FLA's own cohabitation/relationship test is met |
| Possible claim through cohabitation agreement | N/A (equalization already applies) | Yes, if one was negotiated |
| Possible claim through general trust/property law | N/A | Yes, but a different and generally harder path |
What Common-Law Partners Can Rely On Instead
Since the FLA's equalization scheme is off the table, common-law partners in Ontario looking for some share of a former partner's pension or retirement assets generally have to look to one of these alternatives:
1. A cohabitation agreement negotiated in advance
The most reliable route is a written agreement, made during the relationship, that specifically addresses how retirement assets or pension value will be treated if the couple separates. Because there's no default statutory scheme to fall back on, whatever the couple agrees to in writing becomes the operative framework — which is exactly why cohabitation agreements matter more for unmarried couples than for married ones, where the FLA already provides a default structure.
2. General trust or property law claims
Outside of a written agreement, a common-law partner may be able to pursue a property claim through general trust law doctrines rather than through the Family Law Act. This is a genuinely different and typically more complex path than equalization — it requires proving the elements of a trust claim on the specific facts, rather than simply pointing to a statutory formula. It is not a reliable substitute for having an agreement in place, and outcomes are highly fact-dependent.
3. Spousal support, where eligible
Separately from any property or pension-sharing question, a common-law partner may be able to claim spousal support if they meet the Family Law Act's own test for qualifying as a "spouse" for support purposes. Support is a different legal question from property division, though — qualifying for support doesn't create any pension-sharing or property right, and the reverse is also true.
Why This Surprises So Many People
The core misconception driving this surprise is the idea of a "common-law marriage" that grants property rights — including pension rights — after enough time living together. Ontario simply doesn't have that concept. No length of cohabitation, on its own, creates a statutory equalization right for common-law partners. This is worth internalizing early in a relationship, not discovering at the point of separation, because by then the option of negotiating an agreement in advance is gone.
Practical Steps for Common-Law Couples
- [ ] Discuss retirement savings and pension expectations early in the relationship, not after a separation is already underway
- [ ] Negotiate a cohabitation agreement that specifically addresses pension or retirement-asset treatment on separation, rather than assuming a default rule will apply
- [ ] Keep records of financial contributions made during the relationship, which can matter if a trust-based property claim ever becomes necessary
- [ ] Revisit the agreement if circumstances change significantly — a new job with a different pension plan, a long absence from the workforce, or children
Frequently asked questions
Does it matter which province the pension is registered in?
Pension division law can vary by the jurisdiction governing the specific pension plan, and some federally regulated or out-of-province pensions have their own rules. This is a detail worth confirming with a lawyer for your specific plan rather than assuming Ontario's general FLA rules apply uniformly.
Can we agree to split pensions even without a formal cohabitation agreement?
You can always attempt an informal agreement, but without meeting the Family Law Act's formalities for a domestic contract — in writing, signed by both partners, and witnessed — it's much harder to enforce if one partner later disputes it. A properly drafted agreement is the more reliable route.
What about CPP credit splitting specifically?
CPP has its own separate federal process for credit splitting on relationship breakdown, distinct from Ontario's Family Law Act equalization scheme. It operates under its own rules and is worth exploring separately with Service Canada or a lawyer familiar with federal pension credit-splitting.
If I supported my partner's career while they built their pension, do I have any claim at all?
Potentially, through a trust-based property claim if you can show the legal elements required — but this is a fact-specific and more difficult path than the automatic equalization married spouses receive. It's worth discussing your specific contributions and circumstances with a lawyer rather than assuming either that you have no claim or that you're automatically entitled to a share.
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