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Power of Attorney for Personal Care in Ontario: What You Need to Know

Learn what a power of attorney for personal care Ontario covers, when it takes effect, and how to make it legally valid under the Substitute Decisions Act.

Wills & Estates5 min readTSLBy the Treadstone Law team · OntarioUpdated 2026-06
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Key takeaways
  • Under Ontario's Substitute Decisions Act, any capable adult (16 years of age or older, as of writing — verify this threshold has not changed) can create a power of attorney for personal…
  • Ontario law treats your personal affairs and your financial affairs as separate.
  • Capacity is decision-specific under Ontario law.

Most people spend time planning their finances — registered accounts, beneficiary designations, a will. Far fewer take the same care to decide who will make health and personal decisions for them if they can no longer make those decisions themselves.

That gap is exactly what a power of attorney for personal care Ontario residents can grant is designed to close. It is a legal document that names someone you trust — your attorney — to step in and make decisions about your medical treatment, where you live, what you eat, and more, if you lose the capacity to decide for yourself.

This article explains what the document covers, how it differs from a power of attorney for property, how to sign it correctly, and what to do with it once it exists.

What Is a Power of Attorney for Personal Care?

Under Ontario's Substitute Decisions Act, any capable adult (16 years of age or older, as of writing — verify this threshold has not changed) can create a power of attorney for personal care. The document appoints one or more people as your attorney for personal care. The word "attorney" here simply means agent — it does not require the person to be a lawyer.

Your attorney for personal care is authorized to make decisions in any area that touches your personal welfare. The Substitute Decisions Act and the Health Care Consent Act together define that scope broadly to include:

The breadth of that list is one reason the document matters. Without it, family members who assume they can act may find that hospitals, care homes, and other institutions are legally required to follow a specific statutory hierarchy — not necessarily the person you would have chosen.

How It Differs from a Power of Attorney for Property

Ontario law treats your personal affairs and your financial affairs as separate. A power of attorney for property lets your attorney manage your money, bank accounts, real estate, and other assets. A power of attorney for personal care deals only with your person — your body, health, and living situation.

The two documents serve different purposes and often name different people. You might want a spouse to handle personal care decisions but a financially experienced sibling to manage property, or vice versa. You can grant both, one, or neither. They are independent documents.

When Does It Take Effect?

This is one of the most important features of a personal care POA: it only activates when you lack capacity to make the specific decision at hand. Capacity is decision-specific under Ontario law. You might have capacity to choose your daily meals but not capacity to consent to a complex surgical procedure — in that case, your attorney acts on the medical question while you retain the meal decision yourself.

In practice, capacity is assessed by the healthcare provider proposing the treatment, not by a court or a formal process. If a provider finds you incapable for a particular decision, your attorney steps in for that decision alone. You cannot give your attorney power to override decisions you are perfectly capable of making yourself.

Choosing Your Attorney

Your attorney for personal care must be at least 16 years old and must be capable themselves at the time they act for you. You can name more than one attorney and specify whether they must act jointly (together) or may act separately (either/or). Think carefully about that choice: joint attorneys provide a check on each other, but a disagreement between them can leave decisions stuck.

A good attorney for personal care is someone who:

You can and should talk to the person before naming them. Being an attorney is a significant responsibility. Make sure they are willing to serve.

Signing Requirements Under the Substitute Decisions Act

To be legally valid in Ontario, a power of attorney for personal care must be signed in the presence of two witnesses. Not everyone can be a witness. The Substitute Decisions Act sets out who is disqualified; without inventing section numbers, the rules exclude:

Both witnesses must be present at the same time when you sign. You must be capable of granting the power of attorney at the moment of signing. If there is any reason to question your capacity, having a lawyer present — or obtaining a capacity assessment — is wise.

Store the original in a safe but accessible place. Give your attorney a copy. Consider giving a copy to your family doctor, and flag it in any healthcare records where that option exists.

Frequently asked questions

Can I give my attorney specific instructions about my care?

Yes. You can include wishes and instructions directly in the document — preferences about where you want to live, religious or cultural considerations around treatment, views on life-sustaining treatment, and so on. Your attorney is legally required to follow your prior capable wishes when they know them. Writing those wishes down removes ambiguity.

What happens if I don't have a power of attorney for personal care?

Ontario's Health Care Consent Act sets out a statutory list of who becomes your substitute decision-maker by default — generally starting with a spouse or partner, then adult children, then parents, then siblings, and so on. The hierarchy does not care who you would have chosen. If no one on the list is available or if family members disagree, the Consent and Capacity Board may become involved, which is slower and more stressful for everyone.

Can I revoke a power of attorney for personal care?

Yes, at any time while you have capacity. Revocation should be in writing and communicated to your attorney and to anyone who has a copy of the original document. Destroying all copies also revokes it, but written revocation creates a clear record.

Does my Ontario personal care POA work in other provinces or countries?

Not automatically. Other Canadian provinces have their own legislation governing substitute decision-making for health care, and the requirements vary. If you spend significant time in another province — or travel regularly to the United States — you may need additional documents. Speak with a lawyer familiar with both jurisdictions.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. Ontario laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a licensed Ontario lawyer. Treadstone Law is licensed by the Law Society of Ontario — reach us at 1-844-900-1070 or start a file online.

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