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№ 22 Wills & Estates

Banks v Goodfellow and Will Capacity in British Columbia

Understand why Banks v Goodfellow matters in will disputes, how BC courts use it with WESA s. 36, and what to ask a lawyer in British Columbia.

Wills & Estates4 min readTSLBy the Treadstone Law Team · British ColumbiaUpdated November 1, 2026
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Key takeaways
  • Banks v Goodfellow (1870) is described as the leading authority on testamentary capacity.
  • BC courts apply the case law together with WESA section 36 because the statute does not define capacity.
  • The test has a part dealing with delusions that affect a will-maker's gifts.

If you are in a will dispute, you have probably seen a lawyer or a court decision refer to Banks v Goodfellow. The case is more than 150 years old, yet it still sits at the centre of capacity arguments.

This article explains what the case is, how it fits with British Columbia's statute, and how it plays out when a will is challenged. It is general information and not a substitute for advice.

This article covers the law of British Columbia.

Why a Victorian case still matters

Banks v Goodfellow, decided in 1870, is described in CanLII commentary as the leading authority on testamentary capacity, still applied about 150 years later. The same commentary notes that its wording has stayed the same while later case law has refined its criteria.

That history is why you will see the case cited in modern disputes. Courts do not start from scratch each time. They use the established test and the decisions that have developed it.

How it fits with the BC statute

WESA section 36 says a person who is 16 or older and mentally capable may make a will. The section 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 section 36.

A will made by a person under 16 is not valid, and a person aged 16 or older can make a will only if mentally capable. Formal requirements are separate from capacity. A will must be in writing, signed at its end by the will-maker (or the signature acknowledged) in front of two or more witnesses present at the same time, and signed by those witnesses in the will-maker's presence.

In practice, then, the statute supplies the requirement and Banks v Goodfellow and the cases following it supply the detail. The precise wording of each part of the test, and how recent decisions have refined it, is something a lawyer can confirm for your circumstances.

The delusions part of the test

One part of the test concerns delusions. In Ouderkirk v. Ouderkirk, the Supreme Court of Canada in 1936 applied the Banks v. Goodfellow test to insane delusions that affected a will-maker's gifts. The delusions in that case concerned the character and conduct of the will-maker's wife.

The general idea in plain words is that a will-maker's decisions should not be driven by a false belief caused by a mental disorder. Whether a particular belief fits that description is a factual question that depends on evidence.

How the test plays out in a dispute

The Banks v Goodfellow test is only one piece of the process. Suspicious circumstances are addressed in Vout v. Hay, the leading Canadian authority. Where suspicious circumstances relate to mental capacity, the person propounding the will reassumes the legal burden of establishing testamentary capacity.

The capacity questions are decided where validity is formally challenged, by an application to prove the will in solemn form under Rule 25-15 of the Supreme Court Civil Rules.

Timing matters as well. A person receiving notice of a probate application may oppose a grant by filing a notice of dispute under Rule 25-10 (Form P29). Filing one prevents a grant from being issued before the person can apply for an order requiring security. After a grant, the personal representative must not distribute the estate within the 210 days following the grant, except by court order. How the Limitation Act applies to a validity challenge depends on the facts, so it is worth confirming with a lawyer.

What to do next

If a case citation has appeared in your matter, ask the person who cited it to explain what it means for the facts. A lawyer can read the judgments and tell you how the test is currently expressed and applied.

Frequently asked questions

Is Banks v Goodfellow a British Columbia case?

No. It is an 1870 decision described as the leading authority on testamentary capacity, and it is still applied. BC courts apply the case law together with WESA section 36.

Does WESA set out the Banks v Goodfellow test?

No. Section 36 requires that a will-maker be mentally capable but does not define the test, which comes from case law.

Who must prove capacity if the will looks suspicious?

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

Is a delusion enough to cancel a will?

Not automatically. The delusions part of the test looks at insane delusions that affect the will-maker's gifts, as in Ouderkirk v. Ouderkirk. Whether it applies depends on the evidence, and a lawyer can assess it.

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.

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