A tax bill arrives two years after a first acquisition closes

The situation

The envelope was addressed to the company, not to Mirela personally, which was the first thing that made her uneasy when it landed on her desk on an otherwise ordinary Tuesday. Inside was a reassessment notice from the tax authority, covering a fiscal year that had ended nearly a year before she and Tyler had ever heard of the business, let alone signed anything committing to buy it. She read it twice, standing at the mailroom counter, before she fully understood what it actually meant: the company she now owned, had owned for two full years, was on the hook for a tax bill tied to a period when someone else entirely had been running it and filing its returns.

Mirela had spent fifteen years building a physiotherapy practice into a small regional group with several locations, work she understood in her bones and could talk about without a second thought. Buying a manufacturing company in Alliston, a packaging supplier with steady long-term contracts and a solid reputation built over decades, was something entirely different for her: her first acquisition outside the world of clinics she knew intimately, made together with Tyler, an actuary by training whose comfort with numbers and probability had handled the financial modelling and much of the technical diligence when they bought the business two years earlier from Cameron, its long-time founder and sole owner.

The deal had closed in the thirty-to-fifty-million-dollar range, financed partly through the sale of a minority stake in Mirela's clinic group and partly through conventional debt financing arranged with their bank. It had gone smoothly by the standards of any first acquisition: no major surprises turned up in diligence, a clean and uneventful closing, and two full years of steady, unremarkable operation since. The reassessment was, in effect, the first real test of anything that had actually been negotiated into the purchase agreement rather than simply signed, filed away, and largely forgotten as the two of them settled into running an unfamiliar business.

Mirela's first call to our office was less about the dollar figure itself, which was significant but not company-threatening on its own, and more about a single question, asked twice in slightly different words within the same short conversation: how long is this actually going to take to resolve, and can you tell us now, roughly, what it will cost us one way or the other, so we can plan around it properly.

The legal problem

The purchase agreement Mirela and Tyler had signed two years earlier included what is standard in most business sales of this size: a tax covenant from Cameron, promising that the company's tax filings and payments up to the date of closing were accurate and complete, paired with an indemnity obligating him personally to cover any losses if that promise later turned out to be wrong. These provisions exist precisely for situations like this one, where a business changes hands cleanly and quietly, and a tax authority only later disagrees with how something was reported before the sale ever happened.

But a covenant sitting on paper in a signed agreement is not the same thing as money actually in hand, and three separate things had to be worked through carefully before Cameron's obligation became real and enforceable rather than purely theoretical. First, timing: most purchase agreements limit how long after closing a buyer can bring a tax claim forward under the covenant, and the agreement needed to be checked line by line to confirm the reassessment, arriving roughly two years after closing, still fell comfortably inside that contractual window rather than after it had already quietly lapsed.

Second, process: the agreement typically requires the buyer to give the seller prompt, formal notice of any tax claim and, often, to let the seller participate meaningfully in or even control the response to the tax authority, since Cameron had far more direct, first-hand knowledge of the original filing decisions than Mirela or Tyler ever could. Missing a notice deadline, even by what feels like a small margin, can weaken or void an indemnity claim entirely regardless of how clearly the underlying facts might otherwise favour the buyer.

Third, scope: the reassessment as issued covered more than one distinct issue, and not every dollar of it necessarily traced back cleanly to something Cameron's covenant had actually promised to cover. Some portion of it concerned a classification question that was arguably a matter of reasonable professional judgment at the time the original return was filed, rather than a clear-cut error the covenant was ever designed to protect against. Sorting out which parts of the bill were squarely Cameron's contractual responsibility, which sat in genuinely ambiguous territory, and which the company itself might simply have to absorb regardless, was the real legal work sitting in front of us, and it mattered more to Mirela and Tyler, in the end, than the more abstract question of who was technically, provably right.

What we did

1. Checked the notice and limitation clock immediately, before anything else. In our very first meeting with Mirela and Tyler, we confirmed the reassessment fell inside the purchase agreement's contractual claim period and calculated exactly how many days remained to give Cameron formal written notice, because losing this single procedural step, however unfair it might feel, would have ended the claim entirely regardless of its underlying merits.
2. Sent formal notice to Cameron within days, not weeks. We drafted and delivered the notice required under the agreement promptly and precisely, using the exact language, delivery method, and format the agreement itself specified for this purpose, right down to the named address for notices, to remove any argument later that notice had been late, vague, or given only informally over the phone rather than through the channel the parties had actually agreed to years earlier.
3. Set clear expectations around the tax authority's own response deadline. We worked closely with the company's accountant to understand the separate response window the reassessment itself imposed, and built a shared, written timeline for Mirela and Tyler that clearly separated the tax authority's own process from the distinct, generally slower question of resolving the indemnity claim with Cameron, so the two timelines did not get confused in their minds during an already stressful period.
4. Reviewed the reassessment issue by issue against the covenant's actual wording. Rather than treating the bill as one undifferentiated lump sum, we broke it apart into its individual component findings and matched each one carefully against what the covenant had specifically promised to cover, identifying which portions were clear, defensible covenant breaches and which sat in genuinely arguable, harder-to-prove territory.
5. Opened a structured negotiation directly with Cameron's counsel. We proposed splitting the reassessment cleanly into the clearly covered portion, which we asked Cameron to fund promptly and without further argument, and the disputed portion, which we proposed resolving through a defined, time-limited negotiation process rather than an open-ended standoff, deliberately prioritizing a predictable path over squeezing out maximum leverage.
6. Built a firm, milestone-based timeline into the settlement discussion itself. Knowing from our earliest conversations that Mirela and Tyler valued predictability nearly as much as the final dollar figure, we pushed Cameron's side toward a structured resolution with fixed milestones rather than an indefinite back-and-forth, even in places where a slower, more adversarial process might theoretically have produced a marginally better financial result.
7. Documented the resolution carefully to close the file cleanly and permanently. Once terms were finally agreed between the two sides, we papered a settlement and release covering this specific reassessment in full, so that neither side would ever need to revisit this particular issue, while explicitly confirming that the broader indemnity provisions in the original agreement remained available for any separate issue that might still arise later.

The outcome

Cameron agreed to fund the clearly covered portion of the reassessment in full and without further dispute, and the two sides split the more ambiguous, disputed portion roughly down the middle after several weeks of structured negotiation, rather than litigating the underlying classification question through a lengthy and expensive formal process that neither side particularly wanted. In total, Cameron's contribution ended up covering a solid majority of the overall reassessment, with the company itself absorbing the remaining balance directly out of its own funds.

The company also carried the separate cost of the accountant's work supporting the reassessment response, along with a modest amount of interest that had accrued on the outstanding balance while the notice and negotiation process ran its course, expenses that the purchase agreement's covenant, as written, simply did not extend to cover. Mirela and Tyler had hoped, going into this process, that a covenant claim would be closer to automatic than it actually turned out to be in practice; the ambiguous portion in particular required real, sustained negotiation over several rounds of correspondence, rather than the simple invoice to Cameron they had initially imagined sending and expected him to pay without question.

What they valued most, by their own account afterward, was not the precise final split of dollars but the fact that the whole process ran on a schedule they could see coming from very early on, roughly three months in total from the reassessment notice arriving to a fully signed settlement, rather than dragging on indefinitely with no visible end point in sight. For a first-time buyer whose deepest anxiety was genuine uncertainty rather than the dollar figure itself, a predictable process that closed the matter cleanly within a defined window mattered nearly as much, in the end, as the actual amount recovered from Cameron.

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