Insights · Family & Marriage Law

Common-Law in Ontario: The Rights You Do Not Automatically Have

Many couples believe that living together long enough makes them like a married couple in law. In Ontario, for property, that belief is simply wrong.

Published 24 October 2026 · Last verified 24 October 2026 against Ontario and federal law · By the Yu Sheng Family & Marriage Law Team

The property myth

In Ontario, common-law partners do not have the automatic right to equalize property that married spouses have. No matter how many years you lived together, there is no automatic 50 percent. Each partner generally keeps what is in their own name.

What you may still claim

That is not the end of the story. A common-law partner who contributed to property held in the other's name may bring a trust claim, based on unjust enrichment, to recover a share. These claims are powerful but fact-intensive. Spousal support is also available to common-law partners who meet the law's definition, generally after cohabiting for three years, or having a child together.

This gap is where people get badly hurt, the partner who paid down a mortgage on a home in the other's name, then walked away with nothing because they assumed the law protected them. It often does not, unless the right claim is made properly.

Plan, do not assume

A cohabitation agreement, or early advice when a relationship ends, is the difference between a clean outcome and losing years of contribution.

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法律资讯 · 家庭婚姻法

安省同居关系:那些你“并不自动拥有”的权利

很多伴侣以为,同居够久了,法律上就和已婚夫妻差不多。在安省,就财产而言,这个想法完全是错的。

2026年10月24日发布 · 2026年10月24日对照安省与联邦法律核实 · 作者:禹晟家庭婚姻法团队

关于财产的误区

在安省,同居伴侣并不享有已婚配偶那种“自动均衡财产”的权利。无论你们同居多少年,都没有自动的50%。各方通常保留登记在自己名下的财产。

你仍然可以主张什么

但故事并未就此结束。对登记在对方名下的财产有过贡献的同居伴侣,可以基于“不当得利(unjust enrichment)”提出“信托主张(trust claim)”,以追回一份份额。这类主张很有力,但高度依赖事实。符合法律定义的同居伴侣,也可获得配偶抚养费,一般是在连续同居三年后、或双方育有子女。

这道缺口正是很多人吃大亏的地方:一方为登记在对方名下的房子还了多年月供,分手时却两手空空,只因为他以为“法律会保护我”。除非把正确的主张妥善提出,否则法律往往并不会。

要规划,不要想当然

一份同居协议、或关系结束时尽早获得意见,就是“干净了结”与“多年付出付诸东流”之间的区别。

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