Testamentary Capacity in Hong Kong: Banks v Goodfellow in Practice

In Hong Kong contentious probate practice, the most frequently invoked ground for challenging a will is that the testator lacked “testamentary capacity” at the moment of execution. A will that satisfies the formal signing and witnessing requirements of section 5 of the Wills Ordinance (Cap. 30)may nevertheless be pronounced against in solemn form if the propounder cannot establish that the testator was, at the material time, of sound disposing mind. Where the will fails, the estate devolves under the immediately preceding valid will or, in default, under the intestacy regime. The Firm’s position is that capacity evidence is best assembled prospectively at the drafting stage rather than reconstructed years later in litigation.

The Banks v Goodfellow four-limb test

The common law test for testamentary capacity derives from Banks v Goodfellow (1870) LR 5 QB 549 and continues to govern in Hong Kong. The judgment of Cockburn CJ is conventionally distilled into four cumulative requirements. First, the testator must understand the nature of the act — that is, that he or she is making a document which will dispose of property on death — and its general legal effect. Second, the testator must understand the extent of the property being disposed of, at least in broad terms; precise valuations are not required but a grasp of the principal classes of asset is.

Third, the testator must be able to comprehend and appreciate the claims to which he or she ought to give effect — that is, the moral and familial claims of those who might reasonably expect to benefit, such as a spouse, children, and dependants whom the testator has supported during life. The testator need not act on those claims, but must be capable of weighing them. Fourth, no disorder of the mindmay pervert the testator’s sense of right or prevent the exercise of the natural faculties — no insane delusion may influence the disposition in a manner which, if the mind had been sound, would not have been made.

The fourth limb is clinically the most delicate. A testator may converse coherently, recognise relatives, and answer routine questions, yet harbour a fixed delusional belief — for example, a paranoid conviction that a long-loyal child has stolen from or poisoned the testator — which, if it operates on the testamentary disposition, will vitiate capacity. The reasonableness of the disposition is not itself the test, but a markedly unnatural will (the disinheritance of close family in favour of a recent acquaintance, for instance) properly invites closer scrutiny.

The time at which capacity must subsist

Capacity must exist at the time of execution of the will, not merely at the time instructions were given or in the course of ordinary daily life. The requirement is acute for testators with fluctuating cognition — early-stage dementia, post-operative delirium, the effects of chemotherapy or sedating analgesia — because a will signed during a cognitive trough may be impeached even if the testator was lucid on most other days.

The common law admits a limited extension under Parker v Felgate (1883) 8 PD 171: where the testator possessed full capacity when instructions were given, and a solicitor prepared the will in accordance with those instructions, it suffices at execution that the testator understands he or she is signing a will prepared in accordance with previous instructions, without being able to recall the detailed contents. The doctrine is narrowly applied; it requires a clear contemporaneous record of the original instructions and of the chain of preparation. The Firm’s preferred approach is, wherever possible, to satisfy the full four-limb test at execution rather than rely on Parker v Felgate as a fallback.

The Golden Rule for elderly and seriously ill testators

The “Golden Rule”, articulated by Templeman J in Kenward v Adams and reiterated in Re Simpson (1977) 121 Sol Jo 224, is not a rule of law but a counsel of prudence which has become standard practice in Hong Kong for elderly or seriously ill testators. The rule is that the making of a will by such a testator ought to be witnessed or approved by a medical practitioner who has satisfied himself or herself of the capacity and understanding of the testator, and who records the examination and findings.

Burden of proof and suspicious circumstances

In probate, the legal burden of proving that the testator was of sound disposing mind, knew and approved the contents of the will, and duly executed it, rests on the propounder — typically the named executor or principal beneficiary. Where execution is regular on its face and the testator appears to have been a competent adult, a rebuttable presumption of capacity and knowledge and approval arises, and the evidential burden shifts to the challenger.

The presumption is, however, displaced where “suspicious circumstances” surround the preparation or execution of the will: where a principal beneficiary was substantially involved in drafting or procuring the will; where the testator made a major revision close to death in favour of a recent carer; where the dispositions depart radically from the testator’s previously and consistently expressed intentions; or where there are concerns about isolation from family at the relevant period. Once suspicion is raised, the propounder must affirmatively dispel it by clear evidence that the testator knew and approved the contents. Want of capacity and undue influence remain distinct grounds: the latter must be pleaded and strictly proved by the challenger, and a finding of suspicious circumstances alone does not establish undue influence. Where the will ultimately fails, the estate is administered as on intestacy, on which see the Firm’s overview of intestate succession.

Practitioner safeguards at the drafting stage

For elderly or unwell clients, the Firm’s standard procedure addresses capacity evidence at every stage of engagement. Instructions are taken by the supervising solicitor in person, using open questions about the testator’s family, assets, and reasons for the proposed dispositions, with the answers contemporaneously recorded in an attendance note. Where any doubt arises as to cognition, a formal capacity assessment is arranged before execution — ordinarily by the testator’s treating physician, geriatrician, or an independent psychiatrist — with a written report on the four Banks v Goodfellow limbs and on the testator’s ability to recall and weigh the principal dispositions.

Execution itself is conducted at the Firm’s offices wherever possible, with the supervising solicitor and a firm colleague as witnesses, and a detailed attendance note recording the questions put, the testator’s answers, and any observations as to demeanour. With the testator’s prior consent, a video record of the execution may be made in higher-risk matters. Witnesses are selected to avoid the rule in section 10 of the Wills Ordinance, under which a gift to an attesting witness or that witness’s spouse is void (although the will itself remains valid). The Firm’s drafting and execution protocols are described in greater detail on the wills drafting hub.

Practical implications for testators

Three points of practical guidance follow for testators and their families. First, a will should be made while health and cognition are good; delay until a serious diagnosis materially increases the risk of post-mortem challenge. Second, where an early cognitive diagnosis has already been received, the drafting should be supervised by a solicitor who can coordinate the necessary medical evaluation; off-the-shelf will templates are unsuitable in this setting, as they generate no contemporaneous evidence of the matters the court will later need to weigh. Third, where a new will substantially departs from earlier testamentary intentions — by disinheriting a child, by introducing a recent acquaintance or charity as a principal beneficiary, or by making provision substantially out of line with family expectations — the testator should expect, and welcome, a heightened evidential process. That process protects the testator’s autonomy by ensuring that, if challenged, the disposition is one the court can be satisfied was genuinely his or her own.