TREADSTONE LAW · ONTARIO · DIGITAL LEGAL SERVICES · EST. MMXXI ·TSL
Licensed by the Law Society of OntarioFlat fees published upfrontWe reply to messages within 1 business daySign in
№ 22 Wills & Estates

Can a BC Court Order a Capacity Assessment in an Estate Dispute?

Worried about a relative's will? See how capacity is judged in British Columbia, what evidence matters before and after death, and which steps to take.

Wills & Estates4 min readTSLBy the Treadstone Law Team · British ColumbiaUpdated November 13, 2026
← All articles
Key takeaways
  • A person must be 16 or older and mentally capable to make a valid will in British Columbia.
  • WESA requires mental capacity but does not define the test, which comes from case law.
  • Whether a court can order an assessment of a living person, and who may be involved, depends on the circumstances and is worth confirming with a lawyer.

If you are worried about a vulnerable relative, you may wonder whether anyone can order a formal assessment of their capacity. If the relative has died, you may wonder how capacity can be proved after the fact.

This article explains how capacity fits into BC will law and what evidence usually matters. It does not promise that any one tool is available, because that depends on your facts and on the type of proceeding.

This article covers the law of British Columbia.

What the law asks about capacity

Under the Wills, Estates and Succession Act (WESA), s. 36(1), a person who is 16 years of age or older and who is mentally capable of doing so may make a will. A will made by a person under 16 is not valid, and age is separate from capacity: someone 16 or older can make a will only if mentally capable.

WESA sets the requirement of being mentally capable but does not itself define the test. The test comes from case law, which BC courts apply together with s. 36. Banks v Goodfellow (1870) is described as the leading authority on testamentary capacity and is still applied about 150 years later.

How capacity applies to a person with memory problems or illness depends on the situation, so it is worth confirming with a lawyer.

Capacity evidence after a death

When a will is challenged after death, no one can examine the will-maker. Evidence usually comes from records and from people who saw the will-maker around the time of signing. A professional may be asked to review those records and give an opinion looking backward. How much weight a court gives such an opinion depends on the case.

If suspicious circumstances relate to mental capacity, the person propounding the will reassumes the legal burden of establishing testamentary capacity. Suspicious circumstances do not raise the standard of proof, which remains the balance of probabilities. Capacity questions are decided when a person applies to the Supreme Court for an order proving the will in solemn form under Rule 25-15.

Concerns about someone who is still alive

Whether a will can be challenged while your relative is still alive depends on your situation, so it is worth confirming with a lawyer.

Whether a court can order an assessment of a living person, and who may ask for one, depends on the type of proceeding and the facts, so it is worth confirming with a lawyer.

In the meantime, you can help preserve evidence by noting dates, keeping copies of documents and recording observations of how your relative is functioning.

Getting documents and original wills

Under WESA s. 123, the court may order a person with control or possession of certain documents or property to produce and bring them to court. A challenger can use this to obtain original wills and related documents.

Probate itself checks that a will was made without fraud or undue influence, but the government guide says that does not replace the advice of a lawyer.

What to do next

If a probate application is underway, a person receiving notice may oppose a grant by filing a notice of dispute (Form P29) under Rule 25-10. Filing it prevents a grant from being issued before the person can apply for an order requiring security. The personal representative must not distribute the estate within the 210 days following the grant, except by court order.

Frequently asked questions

Can I challenge a will while the person is still alive?

Whether and when a challenge can be brought depends on your situation, so it is worth confirming with a lawyer. If you are worried now, the options depend on the facts and are worth discussing with a lawyer.

Who has to prove capacity?

Where suspicious circumstances relate to mental capacity, the person propounding the will reassumes the legal burden of establishing testamentary capacity. The standard remains the balance of probabilities.

Is there a set test for capacity in BC?

WESA requires mental capacity but does not define the test. It comes from case law, with Banks v Goodfellow described as the leading authority.

Does being over 16 mean a will is valid?

No. Age is separate from capacity, so a person 16 or older can make a will only if mentally capable.

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

This is a wills & estates question

A single will with us is from $894.88, tax included. Third-party fees are extra.

ContactStart a File →