A 12-month period of continuous cohabitation is a key requirement for common-law status at the federal level in Canada。
Federal law (12-month rule)
For federal government purposes, you are considered to be in a common-law relationship if you meet one of the following criteria:
You have lived together in a conjugal (marriage-like) relationship for at least 12 continuous months.
You are the biological or adoptive parents of a child.
Provincial and territorial law (varying rules)
In most other legal contexts, such as those related to family law, property division, and spousal support, the definition of a common-law relationship is determined by each province. In many cases, these rules require a longer cohabitation period than the federal 12-month rule.
Provincial examples for family law
British Columbia
:Two years of living together in a marriage-like relationship.
Alberta
:Three years of cohabitation in a relationship of interdependence, or a shorter time if you have a child together or have a signed Adult Interdependent Partner agreement.
Ontario
:Three continuous years of cohabitation, or one year if you have a child together.
Manitoba
:At least three years of living together, or one year if you have a child. Couples can also register their relationship sooner.