Guardianship in Ontario often comes up during difficult or unexpected moments in life. It may be needed after the sudden death of a parent, when a serious illness or accident leaves an adult unable to make decisions, or when a child receives an inheritance that must be carefully managed until adulthood. In these situations, families are faced with important questions about who will step in and how decisions will be made.
In Ontario, a guardian is the person legally authorized to make those decisions on behalf of someone who cannot do so themselves — typically a child under 18 or an adult who has been found mentally incapable. This is not a casual role. A guardian has a legal duty to act in the other person’s best interests at all times, whether that involves healthcare, living arrangements, education, or finances. Because guardianship carries significant responsibility and court oversight, working with a family law lawyer helps families understand their options and ensures the process is handled properly.
The Two Types of Guardianship in Ontario
Guardianship generally falls into two main categories.
A guardian of the person is responsible for personal care decisions such as healthcare, living arrangements, nutrition, hygiene, and overall safety.
A guardian of property is responsible for managing finances, including bank accounts, paying bills, handling investments or real estate, and overseeing income or benefits.
In some cases, one person may act in both roles, while in others the responsibilities are shared. A family law lawyer can help determine which type of guardianship is required and whether separate appointments make sense.
Guardianship of Minor Children
Guardianship for children is governed by Ontario’s Children’s Law Reform Act and most often arises when parents have passed away or are unable to care for their child. A guardian steps into the role of a parent, making decisions about education, medical care, and day-to-day well-being.
If a child receives a large inheritance or settlement, a guardian of property is responsible for carefully managing those funds until the child turns 18. Although parents can name a guardian in their Will, that appointment only lasts for 90 days after death. During that time, the proposed guardian must apply to the court for a permanent appointment, which is something a family law lawyer can assist with to avoid delays or complications.
Oversight and the Child’s Best Interests
Courts take children’s guardianship very seriously. The Office of the Children’s Lawyer may become involved to review the proposed guardianship plan and ensure it truly serves the child’s best interests. This added layer of oversight helps protect the child, but it also makes the process more complex, so having a family law lawyer involved can help ensure the application meets legal requirements and clearly addresses the child’s needs.
Guardianship in Ontario for Incapable Adults
Guardianship for adults is governed by the Substitute Decisions Act. It is usually only considered when an adult has been found mentally incapable and does not have a valid Power of Attorney in place. A guardian may be responsible for decisions about medical treatment, long-term care, housing, and financial matters.
The court requires detailed plans that explain how decisions will be made and how the adult’s needs will be met. Once approved, the guardian is legally required to follow those plans exactly, making legal guidance from a family law lawyer especially important.
Ongoing Duties and Accountability
Being appointed as a guardian in Ontario does not mean having unlimited control. Guardians must involve the incapable person in decisions as much as possible and always choose the least restrictive option available. Guardians of property must keep detailed financial records and may be required to formally account for their management to the court.
If no suitable family member or friend is available, the Office of the Public Guardian and Trustee may be appointed instead.
Why Legal Guidance is Important for Guardianship in Ontario
Guardianship affects some of the most personal aspects of a person’s life, from healthcare to finances to daily living. Whether the situation involves a child or an incapable adult, working with a family law lawyer helps ensure the process is handled correctly, legally, and with the individual’s best interests at the centre. Understanding guardianship in Ontario starts with the right legal support and a clear plan for the future.
If you have been asked to be a guardian or need to appoint one, speaking with the experienced family law lawyers at Scharff Nyland Chambers can help you understand what is involved. Contact our offices in Barrie, Toronto, Wasaga Beach or Collingwood at 1-866-721-5851, email reception@sncfamilylaw.com or book a consultation through our website.
This blog is for general information only and is not legal advice. For advice about your specific situation, please contact a family law lawyer.




