Anonymised, illustrative composite. In a share purchase (see the closed-years file), an undocumented related-party fee reopened three years the buyer now owned. The identical fee, found on an arm's-length asset purchase of the same kind of company, was never the buyer's exposure to begin with — and the reason is not the survival period, it is who the taxpayer is.
At a glance
A different regional buyer considered acquiring an Alberta industrial cleaning contractor of the same size and shape as the earlier share-purchase file — twenty-two years of trading history, clean filing compliance on its face — but structured this acquisition as a purchase of the business's operating assets for $6,100,000, at arm's length, with the vendor corporation continuing to exist afterward as the seller's own entity, retaining its bank accounts, its tax filings and its corporate history.
Tax diligence turned up the identical red flag as the companion file: a recurring $15,000 monthly “management and advisory” fee, paid over six years to a numbered company owned by the vendor's spouse, with no services agreement, no invoices and no deliverable anyone could name. Three of the six years fell outside the corporation's normal reassessment period on the diligence date.
In the share-deal file, that finding mattered enormously: the buyer would own the corporation whose years were reopened, and had to restructure the indemnity survival period, carve the tax exposure out of the general cap, and fund a $500,000 escrow against it. Buy-side counsel on this deal, having read that file, initially proposed the same protections here — a carved-out indemnity, an extended survival period, an escrow — on the assumption that an undocumented related-party fee creates the same buyer-side exposure regardless of deal structure.
It does not, and the reason is more fundamental than a difference in the length of the exposure window. The question is not how long the reassessment can reach back; it is whose tax liability it reaches at all.
Same fee, same six years, same $180,000 annual figure, same $540,000 across the years the vendor's accountant estimated might be reassessed, same order-of-magnitude gross-negligence exposure under s.163(2) if the reassessment proceeded. In the share deal, that exposure sat inside a purchased corporation the buyer now owned, and threatened the indemnity cap. In this asset deal, it sat inside a corporation the buyer had never acquired any interest in — the vendor's own numbered company remained the vendor's own numbered company, with its own reassessment risk, after closing exactly as before.
The reassessment mechanics themselves are identical in both deals — ITA s.152(4)'s exception for a misrepresentation attributable to neglect, carelessness or wilful default, and s.163(2)'s gross-negligence penalty, operate the same way regardless of how the business was sold. What differs is which taxpayer they operate against, and an asset purchase, done properly, keeps that taxpayer entirely on the vendor's side of the transaction. The buyer acquired equipment, contracts, goodwill and a client list — not the corporation that filed the returns, and not its liability for tax on income it earned in years the buyer never owned it.
The one route that could still reach a buyer of assets is transferee liability, and it does not reach this deal. ITA s.160(1) makes a transferee jointly and severally liable for a transferor's tax, but only where the transfer was to “the person's spouse or common-law partner… a person who was under 18 years of age, or… a person with whom the person was not dealing at arm's length.” An ordinary, arm's-length M&A asset purchase, at a negotiated fair price between an unrelated buyer and seller, is squarely outside every branch of that list. Where s.160 does apply, its liability is capped at the lesser of the shortfall between fair market value and consideration paid, and the transferor's total tax debt — but an arm's-length buyer paying fair value never reaches that calculation, because the threshold condition is never met.
ETA s.325 is the GST/HST mirror of s.160, built on the identical language: liability attaches only where the transferee is “the transferor's spouse or common-law partner… an individual who was under eighteen years of age, or… another person with whom the transferor was not dealing at arm's length.” The same arm's-length fact that keeps s.160 out keeps s.325 out too — there is no route through the GST/HST provision that the income tax provision does not also close.
So the buyer's exposure on these facts was not merely small, or capped by an escrow, or bounded by a shortened survival period. It was zero, by the plain terms of the only two provisions that could have created it. The corporation whose years were reopened continued to exist, continued to be the vendor's own taxpayer, and remained liable for its own reassessment and penalty risk exactly as if the asset sale had never happened.
Buy-side counsel confirmed the arm's-length structure and withdrew the proposed escrow and extended survival period entirely. The purchase agreement's tax representations were limited to the buyer's own post-closing obligations — confirming no successor or transferee liability had been assumed — rather than indemnifying against a reassessment risk the buyer was never exposed to.
Had counsel proceeded with the share-deal-style protections out of caution, the cost would not have been financial exposure avoided — there was none to avoid — but needless negotiation over an escrow the vendor had no reason to agree to fund against a liability that was never going to become the buyer's. The more consequential version of this error runs the other way: a buyer assuming an asset structure always insulates it from a vendor's tax history, without checking whether the deal is genuinely at arm's length. A related-party asset transfer, or one priced below fair value, would put s.160 and s.325 squarely back in play.
The tell is treating “the reassessment window reopened” as a fact about the deal, when it is actually a fact about a specific taxpayer. The question that resolves it every time is the same one: which legal person did the buyer actually acquire an interest in? A share buyer acquires the corporation, its filing history and everything the CRA can still reassess. An arm's-length asset buyer acquires none of that, unless a non-arm's-length transfer or a below-value transfer brings s.160 or s.325 back into the analysis.
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