How to Get Power of Attorney for Someone Who Is Incapacitated or Has Dementia

When someone becomes unable to make decisions because of dementia or another medical condition, families often need to step in. A power of attorney is the legal document that allows a trusted person to make financial or personal care decisions on behalf of someone who cannot do so themselves. This guide explains how to get power of attorney in Ontario when mental capacity is already declining or has been lost.

Understanding Mental Capacity in Ontario

Before a power of attorney can take effect, the law requires that the person granting authority must understand what they are signing. This is called mental capacity. Dementia affects everyone differently. Some people remain capable during early stages, while others lose decision-making ability quickly. Mental capacity is task specific. Someone may be able to choose personal care preferences, but may not understand complex financial decisions.

Ontario provides helpful public guidance through the Substitute Decisions Act and Government of Ontario resources.

how to get a power of attorney for someone who is incapacitated
Ontario Government Mental Capacity Assesment

What To Do If the Person Still Has Some Capacity

If the person with dementia still understands the nature and consequences of a power of attorney, they can sign the documents now. This is often the simplest and least stressful option.

A valid power of attorney must be:

  • Signed voluntarily
  • Signed when the person has mental capacity
  • Witnessed by two eligible adults who are not beneficiaries

There are two types of powers of attorney in Ontario:

  • A Continuing Power of Attorney for Property
  • A Power of Attorney for Personal Care

Both can be prepared at the same time. Families often choose this option to avoid future court involvement.

What To Do If the Person No Longer Has Capacity

Once mental capacity is lost, a power of attorney cannot be created. No one can sign on behalf of the person, and no doctor or family member can authorize it. In these situations, the only option is to apply to the court for guardianship.

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A guardianship order gives someone the legal authority to make either property decisions, personal care decisions, or both. The court requires evidence of incapacity and a management plan outlining how decisions will be made.

Guardianship is more expensive, slower and more complex than preparing a power of attorney while the person is still capable. This is why early planning is strongly encouraged.

How a Capacity Assessment Works

If there is uncertainty about whether the person can still sign a power of attorney, a formal capacity assessment may be helpful. These assessments are completed by a trained capacity assessor. The assessment determines whether the individual understands the nature of the document and the authority they are granting.

A capacity assessment is not always required. Many people sign powers of attorney without one. However, assessments are especially helpful when:

  • The person expresses anxiety or confusion about the documents
  • Family members disagree
  • Dementia has progressed
  • Financial institutions request evidence of capacity

Creating a power of attorney is one of the most important legal steps in future planning. Errors can lead to disputes, delays and court applications. A lawyer ensures the documents meet legal standards, protects the wishes of the person granting authority, and reduces the risk of conflict later. Angrove Law provides flat fee powers of attorney and clear, supportive guidance throughout the process.

Book a consultation today to learn more.

How Do You Get Power of Attorney for an Elderly Parent That Has Dementia?

If your parent still has the mental capacity to understand what they are signing, they can sign a power of attorney now. If they can no longer understand the document, you cannot obtain a power of attorney. Instead, you must apply for guardianship through the court.

Who Makes Medical Decisions If There Is No Power of Attorney?

If there is no power of attorney for personal care, Ontario’s Health Care Consent Act sets out a list of substitute decision makers. This list includes spouses, children, parents, siblings and others in a specific order. If no suitable person is available, the Office of the Public Guardian and Trustee may step in.

Do I Need a Lawyer for a Power of Attorney in Ontario?

A lawyer is not legally required, but it is highly recommended. Powers of attorney must meet specific legal rules and must reflect the person’s wishes clearly. Legal advice helps prevent mistakes and can reduce future conflict among family members. Learn more about this by clicking here.