CanadaCan a step-parent be required to pay child support?
Yes, a step-parent in Canada can be required to pay child support if they have stood in the place of a parent (in loco parentis) and the court finds it appropriate, even though the Divorce Act does not directly impose that duty.
What the Law Says
The federal Divorce Act sets the framework for child support in divorce cases, but it does not automatically make step-parents liable for support. However, its definition of 'child of the marriage' opens the door for step-parent responsibility under specific circumstances.
Under the Divorce Act, 'child of the marriage' includes not only biological or adopted children but also any child whom a spouse has 'demonstrated a settled intention to treat as a child of his or her family' — unless the child is under the age of majority and the spouse has not been prevented from doing so by the child's parent.
This definition matters because only 'children of the marriage' are eligible for child support orders under the Divorce Act. So while the Act itself doesn’t impose a direct duty on step-parents, it allows courts to include them when they meet the 'settled intention' standard.
Section 15.3 confirms that when both child and spousal support are claimed, child support must take priority — reinforcing that children’s needs come first, regardless of parental status.
Statutory TextWhere both child and spousal support are claimed, the court shall give priority to child support.
— Divorce Act, s. 15.3 — Child support priority
What Courts Have Said
The Supreme Court of Canada clarified when and how a step-parent may be held responsible for child support — especially whether they can walk away from that role unilaterally.
A step-parent who has fully assumed the role of a parent (in loco parentis) cannot unilaterally withdraw from that relationship once the marriage ends; the court may order child support if it is fair and appropriate, based on the step-parent’s conduct and commitment to the child.
What to Do
Determine whether the step-parent demonstrated a 'settled intention' to treat the child as their own — e.g., through daily care, financial support, using parental titles, or involvement in schooling/health decisions.
Check if the claim falls under the Divorce Act (for divorcing couples) or provincial family law legislation (e.g., Ontario’s Family Law Act), which may impose broader step-parent obligations.
Gather evidence of the step-parent’s role: school records, medical documents, photos, witness statements, and financial contributions.
File an application for child support in family court — either alongside divorce proceedings or separately under provincial law.
Be aware that courts consider fairness, the child’s best interests, and whether imposing support would cause undue hardship to the step-parent.
Sources
Not legal advice. This article is general information based on publicly available sources, written for educational purposes. Laws change and individual situations vary. Consult a licensed attorney in your jurisdiction before acting on anything you read here. Last reviewed: 2026-06-08.