A Buy-Sell Notice Arrived the Week of a Terminal Diagnosis

The situation

The letter arrived four days after Minh's diagnosis, before he and Jing had even told their adult children. It came from Zhen, Minh's business partner of eleven years in a chain of clinics they had built together across the region, and it invoked a clause in their shareholder agreement allowing either partner to buy out the other if a partner became unable to continue actively managing the business. The letter proposed a valuation for Minh's half interest, roughly $1.1 million, based on a formula tied to the clinics' book value from three years earlier.

Minh and Jing, both retired from their working careers, Minh from building the clinic chain and Jing from a long run as a technology executive, had never gotten around to updating their wills or powers of attorney. It was the kind of task that always seemed to have a later date attached to it. The diagnosis, terminal and with a prognosis measured in months rather than years, removed the later date entirely. Without a valid power of attorney for property, Jing had no clear legal authority to manage Minh's affairs, negotiate with Zhen on his behalf, or make decisions about the clinic interest if Minh's condition worsened quickly. Without an updated will, the clinic shares, the house, and a mixed portfolio of investment accounts totalling somewhere in the range of $3.8 million would pass under an outdated document that no longer reflected either their wishes or their family's current makeup.

Zhen's letter set a response deadline of thirty days, a figure drawn from the shareholder agreement itself rather than any court process. Whether that formula-based valuation held up depended heavily on how the clinics' finances were actually documented, and that was where the file got complicated. The clinic chain's books had been maintained loosely for years, with several locations run on a mix of spreadsheets and an outside bookkeeper's periodic summaries that had never been fully reconciled against the bank accounts.

Minh and Jing came to us with two problems tangled together: an urgent personal planning gap that needed to close within days, not weeks, and a business dispute where the number on the table might be badly wrong but nobody could yet prove by how much. We told them the two problems needed to be solved in parallel, on two different timelines, starting immediately.

The legal problem

Ontario law does not require a diagnosis, however serious, to affect a person's ability to sign a valid will or power of attorney. What it requires is capacity, judged document by document and moment by moment. For a will, the person has to understand what they are signing, roughly what they own, and who might reasonably expect to benefit from them. A power of attorney for property is measured against its own separate test, and one for personal care against another again, so being capable of signing one does not automatically mean being capable of signing the others. A terminal prognosis does not itself remove capacity, and many people retain full capacity through the final weeks of a serious illness. But capacity can fluctuate with medication, fatigue, and the disease itself, and a document signed too late, after capacity has genuinely declined, can be challenged later, though not by just anyone unhappy with its terms. Only someone with a financial interest in the estate, a beneficiary under this or an earlier will, or someone who would inherit if there were no will, has standing to bring that kind of challenge. Time was not a convenience here; it was the entire margin for error.

The buyout clause raised a separate and, in some ways, harder problem. Shareholder and partnership agreements commonly include provisions that let the business continue smoothly if an owner dies, becomes incapacitated, or can no longer actively participate, and they are legitimate tools when the valuation mechanism they use is fair. The question here was whether the formula in Zhen and Minh's agreement, tied to book value calculated three years earlier, still produced a fair result now. Clinic chains generate much of their value from patient volume, referral relationships, and ongoing revenue that a static, backward-looking book value figure does not capture well. If the clinics had grown meaningfully since that valuation date, and the loosely kept books simply had not been updated to reflect it, Zhen's letter could be entirely proper in form while still proposing a number substantially below what Minh's interest was actually worth.

There was also a practical problem sitting underneath the legal one. Nobody, including Zhen, had current, reconciled financial statements for the clinic chain. The bookkeeper's summaries did not match the bank records in several places, revenue from two of the newer locations appeared to be recorded inconsistently, and no one could say with confidence what the clinics' true combined revenue or asset base looked like in the present. Without that groundwork, any number either side proposed, including the one already on the table, was closer to a guess than a valuation, and a guess made under a thirty-day deadline while one partner was dying was not a position we were willing to let Minh negotiate from.

What we did

1. Arranged same-week appointments to sign the will and powers of attorney. We prioritized getting valid documents signed while Minh's capacity was clear and well documented, rather than waiting to resolve the business dispute first, because the planning gap carried the greater immediate risk and could not be undone if it slipped. A buyout dispute could still be negotiated later; a signature obtained after capacity had genuinely declined could not be fixed at all.
2. Documented Minh's capacity at the time of signing. We arranged a contemporaneous assessment from his treating physician and kept detailed file notes of our own meeting with him, covering how he described his assets, his family, and his wishes in his own words, so the validity of the documents could not later be challenged on the basis that the diagnosis had already affected his judgment.
3. Named Jing as attorney for property and personal care, with a named backup. This gave Jing immediate, unambiguous legal authority to manage Minh's affairs, including responding to Zhen on his behalf and accessing joint accounts and business records, without needing to seek court appointment under time pressure later, which can take weeks even when uncontested. Naming a backup attorney also meant the authority would not lapse if Jing herself became unable to act during an already difficult stretch.
4. Wrote to Zhen requesting a formal extension of the thirty-day deadline. We explained, without disclosing medical detail beyond what was necessary, that the family required time to obtain proper financial information before responding to a valuation neither side could currently verify, and asked for the request in writing so there would be no dispute later about what had been agreed.
5. Retained a forensic accountant to reconcile the clinic chain's books. Rebuilding three years of transactions against bank records, merchant statements, and the bookkeeper's scattered summaries was the only way to establish what the clinics were actually generating in revenue, which the outdated book-value formula did not reflect and which nobody, including Zhen, had assembled before. This was slower than accepting the letter's figure, but a number Minh's family could not defend was worse than no number at all.
6. Compared the reconciled figures against the formula in the shareholder agreement. Once the real numbers were assembled, it became clear the clinics' current value was well above the figure in Zhen's letter, giving us a documented basis to challenge the offer rather than a general objection to its fairness that Zhen's lawyer could simply dismiss. The comparison also showed precisely where the old formula had gone stale, which mattered for the conversation about updating it going forward.
7. Presented the reconciled accounting to Zhen's lawyer directly. Rather than filing a claim immediately, we gave Zhen's side the chance to review the underlying working papers and reconsider the offer, which kept the dispute out of court while the family's time and energy were needed elsewhere, at home rather than in a hearing room. Sharing the working papers openly also made it harder for Zhen's side to dismiss the new figures as advocacy rather than accounting.
8. Finalized the estate plan alongside the ongoing negotiation. With the will and powers of attorney already in place, Jing was able to keep managing the business dispute on Minh's behalf without any gap in authority as his health changed over the following months, and without having to pause the negotiation to sort out who could sign what. Running both tracks in parallel, rather than one after the other, was what made the six-day timeline realistic at all.

The outcome

Minh signed his will and both powers of attorney six days after the diagnosis, with a physician's capacity assessment on file and detailed notes from the signing appointment attached to the estate plan. He remained capable and involved in decisions for several more weeks, which mattered a great deal to Jing, but the documents were valid the moment they were signed regardless of what came after, and no one was ever in a position to argue otherwise.

The reconciled accounting told a very different story from Zhen's original letter. The clinic chain's real revenue had grown substantially since the book-value figure the buyout formula relied on, driven mostly by two newer locations whose income had never made it into the outdated summaries Zhen's letter was built on. The properly rebuilt numbers put Minh's half interest closer to $2.3 million than the $1.1 million first proposed, roughly double the original offer. Faced with a documented, defensible figure instead of an unverified objection, Zhen's lawyer withdrew the original offer rather than litigate a valuation the reconciled books made hard to defend, and the partners agreed to revisit any buyout discussion using properly updated financial statements going forward, on a timeline that was not dictated by a diagnosis or a thirty-day contractual clock.

Minh passed away five months later. Because the estate plan had been signed in time, with capacity clearly documented at every stage, Jing inherited under a will that reflected their actual wishes rather than an outdated document from years earlier, and the clinic interest passed into the estate at its real value rather than at a figure a rushed, one-sided formula would have locked in permanently. Zhen and the estate later worked out an orderly buyout on updated terms, at a price both sides could support with their own numbers, closing the business relationship without the acrimony the original letter had set in motion.

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