Naming a Guardian for a Child in an Ontario Will: What Ottawa Parents Should Know

Published October 11, 2026 · Meysami Law Professional Corp. · Ottawa

Parents often say they want to name a guardian in a will, but Ontario law separates decision-making responsibility for a child from guardianship of the child's property. A will can include appointments, yet their legal effect depends on who held authority immediately before death, the consent of the person appointed and the statutory 90-day framework. The wording should be prepared for the actual family situation rather than copied from a generic form.

Distinguish care decisions from property management

Ontario's Children's Law Reform Act addresses two different appointments. A person entitled to decision-making responsibility may appoint someone by will to have decision-making responsibility after death. A guardian of a child's property may appoint someone by will to be guardian of that property. The same person may be considered for both roles, but the authority and practical duties are not identical.

A will appointment is subject to statutory limits

The appointment is effective only in the circumstances described by section 61. In general, the will-maker must be the only person entitled to decision-making responsibility, or the relevant people with authority must die at the same time or in circumstances where survivorship is uncertain. Existing parenting orders, agreements and the other parent's legal position must be reviewed.

The person appointed must consent

Ontario law states that an appointment is not effective without the appointee's consent. Discuss the role before signing the will and consider an alternate. Practical questions include the child's relationship with the person, location, health, household, ability to cooperate with family, financial arrangements and willingness to apply to court if needed.

The testamentary appointment is not automatically permanent

Section 61 provides that an appointment expires 90 days after it becomes effective. If the appointee applies within that period for decision-making responsibility or guardianship of property, the appointment continues until the application is decided. The will does not prevent another application or a court order, and the child's best interests remain central to court decisions.

Coordinate appointments made by two parents

If people with authority make different appointments and die in the circumstances covered by the Act, the statutory rules can affect which appointments are effective. Parents should review the names and alternates together where appropriate, while still receiving advice that respects each person's instructions and any conflict or family-law order.

Prepare the information a lawyer will need

Bring existing wills, parenting agreements or orders, the child's basic family information, the proposed appointee's full legal name and location, and details about any property or insurance intended for the child. Ask how trusts, the estate trustee, the proposed care appointment and guardianship of property should work together. Review the plan after separation, divorce, death, relocation or a major change in the proposed appointee's circumstances.

This article is general information as of October 11, 2026, not legal, tax or financial advice. Rules and circumstances can change. Contacting the firm does not create a lawyer-client relationship.