What to Do With No Power of Attorney and Parent Has Lost Capacity: Guardianship in Ontario
Quick Answer
In Ontario, if an adult loses mental capacity and never signed a power of attorney (a legal document naming someone to make decisions for them), family members cannot automatically step in to manage their money or their care.
To handle finances, someone typically applies to become guardian of property — either through the Office of the Public Guardian and Trustee (a provincial government office) after a formal capacity assessment, or by application to the Ontario Superior Court of Justice.
Personal-care decisions, such as where the person lives, may require a separate application to become guardian of the person.
For health-care treatment specifically, the Health Care Consent Act, 1996 already names an automatic substitute decision-maker — often a spouse or an adult child — so a guardian is often not needed just to consent to treatment.
A qualified capacity assessor must confirm incapacity, because a diagnosis on its own does not establish it.
Why No One Automatically Has Authority
Finding out that no one can legally act for a parent or a spouse is one of the hardest moments a family faces. You may have called the bank to pay a bill, or spoken to a doctor about care, and been told that being next of kin is not enough. It is a common situation, with a clear path through it.
In Ontario, an adult keeps the right to make their own decisions until the law says otherwise. If someone can no longer make decisions and never signed a power of attorney, no one gains authority automatically. Instead, the law sets out how a substitute can be appointed, and who can step in for certain choices right away.
This guide walks through those options: the two kinds of guardianship, the faster and slower routes to each, and the one area where a court order is often unnecessary.
Quick Start: Pick Your Path
Sort your situation into one of three needs:
One check comes first. If your loved one still understands what a power of attorney is and does, signing a power of attorney for property now may be far simpler than any guardianship. Capacity is decision-specific, so early cognitive decline does not automatically rule it out.
Guardian of Property vs Guardian of the Person
Ontario's Substitute Decisions Act, 1992 defines the two roles. A guardian of property is a person or trust company appointed to manage the finances of someone found incapable of managing property. Their duty is to act in that person's best financial interest and keep careful accounts. The role, however, does not include making a will.
A guardian of the person is appointed to make decisions about personal care for someone found incapable of personal care. This can cover shelter, safety, hygiene, and health, within the limits the appointment sets. Because the two roles are separate, being appointed to one does not give authority over the other. Our wills and estates team can help you sort out which appointment you need, if any.
Two Ways to Become Guardian of Property
In the statutory route, a designated capacity assessor may find that a person cannot manage property and issue a certificate of incapacity. That certificate can make the Public Guardian and Trustee the person's statutory guardian of property, and a family member may then apply to replace the Public Guardian and Trustee.
In the court route, a proposed guardian applies to a judge for appointment. This route is often used when no certificate has been issued, or when the family wants to be appointed directly rather than replacing a government office later.
| Statutory guardianship (OPGT) | Court-appointed guardianship | |
|---|---|---|
| Who appoints | The Public Guardian and Trustee becomes guardian; family can then apply to replace it | A judge of the Ontario Superior Court of Justice |
| What triggers it | A certificate of incapacity following a capacity assessment | An application by a proposed guardian |
| Capacity assessment | Yes, by a designated capacity assessor | Evidence of incapacity is typically required |
| Plan required | A Management Plan for the property | A Management Plan for the property |
| Who receives notice | The Public Guardian and Trustee and family, to replace the OPGT | The person, close family, and the Public Guardian and Trustee |
| Typical speed | Often faster | Often several months; can take longer if contested |
| Ongoing oversight | Oversight by the Public Guardian and Trustee; accounts kept | Court terms may apply; a passing of accounts can be required |
| When it tends to fit | When a certificate has been issued and family wants to take over from the OPGT | When no certificate exists, or family wants a direct appointment |
Health-Care Decisions Follow a Different Rule
A substitute decision-maker is the person that a health practitioner turns to when a patient is found incapable of making a treatment decision. That authority follows a ranked order rather than a first-come, first-served basis: higher-ranked people are asked before lower-ranked ones. The substitute must be capable, available, willing, and not blocked by a court order or separation agreement.
Because this list runs automatically, guardianship of the person is often unnecessary just to consent to treatment. It matters more for ongoing decisions, such as where a person lives. Planning ahead with a power of attorney for personal care lets you choose your own decision-maker instead of relying on the default order.
The Guardianship Application, Step by Step
A guardianship application moves through a series of stages, and knowing its structure makes the process feel less daunting. It usually begins with a capacity assessment by a qualified assessor, whose report is the evidence that the person cannot make the decisions in question.
From there, the family chooses the route that fits and prepares a plan. For property, this is a Management Plan setting out how the finances are to be handled. For personal care, this is a Guardianship Plan describing how care needs are to be met. The application, or the government forms in the statutory route, is then completed and filed.
Notice generally goes to the person, to close family members, and to the Public Guardian and Trustee, each of whom may respond. If the appointment is granted, the guardian takes on ongoing duties, including keeping records and accounting for their decisions. The chart below lays out the sequence. If you would like a hand in mapping your own next step, you can reach our team.
How Long It Takes and What It May Cost
Several things drive the cost up. A capacity assessment carries a fee that the assessor sets, so it is not a fixed government amount. A court application may involve legal fees, court costs, and, in a contested matter, the cost of a hearing. The statutory route carries a set government application fee, which is generally lower.
Reasonable costs of managing a person's property can sometimes be treated as a proper expense of that property, though that can depend on the circumstances and court approval. Because these figures move, ask about current fees before you begin.
Common Mistakes to Avoid
A few mistakes come up frequently. Keeping them in mind can save time, money, and stress.
If planning ahead is still possible, a power of attorney for property is often the simpler path.
Frequently Asked Questions
Can I access my parent's bank account without a power of attorney in Ontario?
Do I need to become a guardian to make medical decisions for my parent?
What is the difference between guardian of property and guardian of the person?
Who makes decisions if there is no power of attorney?
How long does it take to become a guardian in Ontario?
How much does a guardianship application cost in Ontario?
Can my parent still sign a power of attorney if they already have dementia?
Getting Help When You're Not Sure Where to Start
The key insight is simple. Without a power of attorney, no one automatically gains control when a loved one loses capacity, but Ontario law gives you a defined path. For medical care, it often gives you a decision-maker right away. Knowing which path fits your situation is the first step, and it is usually easier than families fear.
At Nihang Law, Qasim Ali, our Principal Lawyer, and our wills and estates team help families across Toronto, Scarborough, and the wider GTA sort out guardianship and substitute decision-making with clarity and care. If you are facing this and are not sure where to begin, you are welcome to reach out to us for guidance tailored to your circumstances.
Facing this and not sure where to start?
A short conversation can help you find the right path for your family, whether that is a power of attorney, guardianship, or simply knowing who the law already lets decide.
Contact Nihang Law
About the author
Qasim Ali
Principal Lawyer · Nihang Law Professional Corporation · Toronto & Scarborough, Ontario · Law Society of Ontario
Qasim Ali is the Principal Lawyer at Nihang Law Professional Corporation, serving clients across Toronto, Scarborough, and the broader Greater Toronto Area. He provides full-service legal representation across immigration, real estate, family law, criminal law, civil litigation, employment law, wills and estates, and business law.
Nihang Law is particularly recognized for its depth in immigration and real estate law, a combination that serves newcomers and growing families navigating both legal systems simultaneously.
Learn more about Qasim Ali →Sources & References
- Substitute Decisions Act, 1992, S.O. 1992, c. 30 — Government of Ontario (e-Laws)
- Health Care Consent Act, 1996, S.O. 1996, c. 2, Sch. A, s. 20 — Government of Ontario (e-Laws)
- Guardianship — becoming a guardian of property or of the person, Government of Ontario
- Office of the Public Guardian and Trustee, Ministry of the Attorney General (Ontario)
- Law Society of Ontario