February 2026 · 6 min read
One of the most persistent and costly misconceptions in Ontario family law involves common-law couples. After three or more years together — or after having a child together — many common-law partners believe they have essentially the same financial rights as married spouses upon separation.
They do not. And discovering this at the wrong moment can be financially devastating.
When a married couple separates in Ontario, the Family Law Act creates an automatic framework for property sharing through equalization of net family property. This framework does not exist for common-law couples.
A common-law partner who did not accumulate significant assets in their own name — regardless of how long the relationship lasted or what they contributed to the household — does not have an automatic right to share in the assets accumulated by the other partner.
This does not mean common-law partners have no recourse. There are legal mechanisms that can apply, but they are different, more complex, and harder to enforce:
If you contributed to the accumulation of assets that are in your partner's name — through financial contribution, domestic work, or building a business — you may have a claim based on unjust enrichment. These claims require evidence and legal argument, and outcomes are less predictable than the married-couple framework.
In some circumstances, a constructive or resulting trust may exist over specific property. These are fact-specific and require legal analysis of your particular situation.
Common-law partners who have lived together for three or more years, or who have a child together, may be entitled to spousal support. Child support rights are essentially the same as for married couples.
If you have a cohabitation agreement that addresses property, its terms will generally govern. Many couples do not have one — which is where the default rules become critically important.
If you are in a long-term common-law relationship and you separate, the financial outcome depends heavily on whose name things are in, what you can prove about your contributions, and whether you have any written agreements.
Understanding your actual position — before separation becomes contentious — is the kind of preparation that can significantly change your outcome. Most people in this situation benefit enormously from a clear-eyed financial picture before the legal process begins.
A confidential conversation clarifies exactly where you stand — before the legal meters start running.
Book a Confidential ConsultationThis article is provided for general informational purposes only and does not constitute legal advice. For advice specific to your situation, please consult a qualified family law lawyer in Ontario.
A confidential conversation costs nothing. We will give you an honest picture of your position.
Book a Free Consultation