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How Mental Capacity Is Decided for Financial Decisions in New Brunswick

Learn who decides whether a parent can still manage money in New Brunswick, what capacity test applies, and what evidence is used under the law.

Wills & Estates4 min readTSLBy the Treadstone Law Team · New BrunswickUpdated November 1, 2026
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Key takeaways
  • New Brunswick starts from the presumption that an adult has capacity unless the contrary is shown.
  • The test is whether the person can understand the relevant information and appreciate the reasonably foreseeable consequences of a decision.
  • Who decides depends on the route: the person named in an enduring power of attorney, an assessor, or the Court of King's Bench.

When a parent begins missing bills, giving money away or becoming confused about accounts, families often ask the same question: who gets to say a person can no longer manage their money? The answer is not a single moment or a single person. It depends on whether a power of attorney is in place and what you are trying to do.

This article explains in plain words how capacity is understood in New Brunswick, who makes the call, and what kind of evidence is used. It is general information, not advice on your family's situation.

This article covers the law of New Brunswick.

What capacity means in law

Capacity is not about whether someone makes choices you agree with. Under the Supported Decision-Making and Representation Act, a person has capacity if they can understand information relevant to the decision and appreciate its reasonably foreseeable consequences. The Enduring Powers of Attorney Act uses the same two-part idea.

A person is presumed to have capacity unless the contrary is demonstrated. The enduring power of attorney legislation likewise presumes capacity unless it is determined otherwise. So the starting point is that your parent can manage their own affairs, and the burden is on showing otherwise.

Who decides: three common routes

Who makes the determination depends on the route. The table sets out the main ones.

SituationWho determines capacity
Enduring power of attorney that starts only on incapacityThe person named in the document for that job or, failing that, an assessor
Application for a representation orderThe Court of King's Bench, relying on a capacity assessment report
Application for a representation order where the person refuses to be assessedThe Court of King's Bench, and the assessment report need not accompany the application

An assessor, for the power of attorney route, is a licensed medical practitioner or nurse practitioner, or a prescribed class of person. For court applications, assessors include medical practitioners, nurse practitioners and psychologists.

What evidence is used

Informal worries, such as a pattern of odd spending, are a good reason to look closer, but they are not the same as the formal steps the law sets out for deciding incapacity or applying to court. The formal evidence depends on the route: under an enduring power of attorney, incapacity is determined by the person named in the document or, failing that, by an assessor. An application to the Court of King's Bench for a representation order must include the applicant's affidavit, the proposed representative's affidavit, a capacity assessment report, and a financial summary if financial powers are sought.

The assessment report must be dated no earlier than six months before the application is filed, unless the court orders otherwise. If the person refuses to undergo or continue an assessment, the report need not accompany the application. That does not mean the court will simply agree; it still has to be satisfied on the legal test.

Capacity can depend on the decision

The question being asked can differ depending on the route, and the law frames it differently for a personal care attorney than for a court-appointed representative. A personal care attorney, for example, acts only when the grantor lacks capacity for the matter at hand. In contrast, when the court appoints a representative it must be satisfied that the person lacks capacity to make all the decisions likely to arise, that each proposed representative consents and is suitable, and that a less intrusive measure is unavailable or would not meet the person's needs.

What to do next

If your parent still has capacity, they may be able to sign an enduring power of attorney themselves. A lawyer can explain the options based on the facts.

Frequently asked questions

Can my parent lose capacity just because they make poor decisions?

Not on that basis alone. The law asks whether the person can understand the relevant information and appreciate the reasonably foreseeable consequences. Capacity is also presumed unless the contrary is demonstrated.

Does a doctor have to assess capacity?

Often a professional is involved. Under an enduring power of attorney, incapacity is determined by the person named in the document or, failing that, an assessor such as a licensed medical or nurse practitioner. A court application for a representation order requires a capacity assessment report, though the report need not be included if the person refuses assessment.

How recent must the assessment be for a court application?

The report must be dated no earlier than six months before the application is filed, unless the court orders otherwise.

Is the test different for a power of attorney and a court order?

The wording is closely aligned. Both describe capacity as the ability to understand relevant information and appreciate reasonably foreseeable consequences. What differs is who makes the decision and the process.

Sources

Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. New Brunswick 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 lawyer who practises in New Brunswick. Reach us at 1-844-900-1070 or send our Team a message.

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