Defending a Will Backed by a Capacity Assessment

The situation

Paulo's father, Carlos, died in Stratford after several years of declining health, leaving a will signed about fourteen months before his death. The will named Paulo, a retail worker in his thirties, as estate trustee and left him roughly sixty percent of an estate worth about $200,000, made up mostly of a small paid-off house and modest investment savings. The remaining forty percent went to Paulo's brother Jomar, an administrative assistant. An earlier will, made several years before, had split everything evenly between the two brothers.

The unequal split was not a snap decision. Carlos had raised it with his family doctor and with the lawyer who eventually drafted the new will more than a year before he signed it, explaining that he wanted to reflect the care Paulo had provided in his final years. He was in his late seventies at the time, living with a chronic heart condition that made his family and his lawyer cautious about the will being challenged later — which is precisely why the capacity assessment existed in the first place.

Six weeks after Carlos's death, before Paulo had even finished sorting through his father's paperwork, Jomar's lawyer sent Paulo a notice disputing the will. The claim was that Carlos had not had the mental capacity to make a valid will when he signed it — that his memory had already been failing, and that he could not have understood what he owned, who might reasonably expect to benefit, or the effect of cutting his share. If the challenge succeeded, the estate would fall back to the earlier will, or possibly to the intestacy rules that apply when there is no valid will at all, splitting everything evenly regardless of what Carlos had actually wanted at the end, and regardless of the years he had spent thinking the question through.

What the challenge required

In Ontario, a will only takes legal effect if the person who made it had testamentary capacity at the time — meaning they understood, in broad terms, what they owned, who had a reasonable claim on their estate, and what the will would do with it. Capacity is assessed at the moment the will is signed, not before or after. A person can be perfectly clear-headed on one day and confused the next, which is exactly why the timing of Jomar's evidence mattered so much.

Once a will challenge alleges incapacity and points to some evidence supporting that suspicion, the legal burden shifts. It is no longer enough for the estate trustee to simply produce a will that looks properly signed and witnessed. The estate has to affirmatively prove that the person understood what they were doing when they signed it. Jomar's lawyer had assembled real ammunition for that argument: a family doctor's chart note from around the same period describing memory lapses, and a pharmacy record showing medication changes consistent with early cognitive decline.

Ordinarily, this kind of evidence is difficult for an estate trustee to answer. Family members and even doctors' general notes rarely speak directly to the specific legal test — a chart note describing memory problems does not by itself say whether someone understood the nature of a will, what they owned, or who had a claim on it. Most defended capacity challenges turn into a costly battle of retrospective opinions, with each side's expert reconstructing capacity years after the fact from incomplete records, often disagreeing sharply because neither expert ever actually examined the person while they were alive. Paulo's case did not have to go that route, because of one document his father's original lawyer had arranged before the will was ever signed.

What we did

1. Located the capacity assessment referenced in the will file. The lawyer who had drafted the will years earlier had noted, in a memo kept with the signed original, that he had arranged for Carlos to be independently assessed by a physician for testamentary capacity before the signing appointment, given his age and the size of the change from the prior will. We obtained a copy, which concluded in plain terms that Carlos understood his assets, understood he had two sons, and understood the new will would leave them unequal shares.
2. Corroborated it with the drafting lawyer's own file notes. The file included the lawyer's contemporaneous notes from the signing meeting, describing a coherent conversation in which Carlos explained, in his own words, why he wanted to leave Paulo a larger share — Paulo had moved back to Stratford to help him after a hospital stay, while Jomar lived out of town and visited rarely. Courts give real weight to a lawyer's notes taken at the time of signing, particularly when they record the testator's own reasoning.
3. Addressed the medical records directly rather than avoiding them. We did not dispute that the family doctor's chart showed memory complaints, or that a medication had been adjusted. Instead, we obtained the full chart and pharmacy history and had it reviewed against the capacity assessment date. The changes in the chart notes came four months after the will was signed, and the medication adjustment was for a sleep disorder, not a cognitive one — decline after signing does not establish incapacity at the moment of signing.
4. Prepared the estate trustee's own evidence of Carlos's conduct in the following year. A single assessment on the day of signing can look like an isolated snapshot unless there is evidence around it showing the same person functioning the same way before and after. Paulo gathered records showing Carlos had continued managing his own banking, renewed his driver's licence with no issue, and lived independently for most of the year following the will — evidence that the assessed capacity was a settled state, not a brief window that quickly closed.
5. Disclosed the full picture voluntarily before litigation escalated. Rather than waiting for formal document exchange, we sent Jomar's lawyer the capacity assessment, the drafting lawyer's notes, and the corroborating chart timeline early, with an offer to resolve the dispute without a trial. Putting the strongest evidence on the table early, instead of holding it back as a courtroom surprise, is often the fastest way to end a weak challenge — a case built on a partial medical record tends to lose its momentum once the missing context is filled in.

The outcome

About five months after the initial notice, and before any trial date was set, Jomar's lawyer advised that the challenge would be withdrawn. The capacity assessment obtained before signing, paired with the drafting lawyer's contemporaneous notes and the timing gap between the will and the medical decline, left little for a court to weigh in Jomar's favour. The brothers reached a short settlement confirming the will as written, with each side responsible for their own legal costs incurred to that point — a modest expense set against an estate of roughly $200,000, and far less than a trial would have cost either of them. Ontario courts have discretion to order an estate to cover a challenger's costs even in a losing case, if the challenge was reasonably grounded in the circumstances known at the time, which is part of why early, thorough evidence-sharing matters — it can end a dispute before a court ever has to weigh whether that discretion should apply.

The estate was distributed under the terms Carlos had chosen: roughly $120,000 to Paulo and roughly $80,000 to Jomar, reflecting the sixty-forty split in the will. Probate — the court process confirming a will's validity and an estate trustee's authority to act — had been paused while the challenge was outstanding and was granted shortly after the settlement, allowing Paulo to finish administering the estate within a few months. The brothers still speak, which Paulo credits partly to the dispute ending in a documented answer rather than a bitter, unresolved trial neither of them could really afford.

What you can learn from this