The Tax Cost \"Bump\": Why Buyers Prefer Asset Purchases in Ontario

One of the quieter reasons buyers push for an asset purchase instead of a share purchase has nothing to do with liability — it's about tax. When you buy specific assets rather than a corporation's shares, you generally get to record the tax cost of those assets at what you actually paid for them, rather than inheriting whatever cost the seller's corporation happened to be carrying on its books.

Buyers and their accountants often call this a "step-up," or informally a "bump," in the tax cost base. It can translate into real savings over the years that follow a purchase, which is part of why buyers who are otherwise indifferent on liability grounds still often prefer an asset structure.

This article explains what the cost base reset actually does, where it matters most, and how it fits into the broader asset-versus-share negotiation.

What "Cost Base" Means in a Business Sale

For tax purposes, most business assets — equipment, vehicles, certain intangibles — have an undepreciated cost that shrinks each year as the owner claims depreciation-related deductions against it. Over time, especially for an older or well-established business, that recorded cost can fall well below what the asset is actually worth today.

How an Asset Purchase Resets It

When a buyer purchases the underlying assets directly, rather than the shares of the corporation that owns them, the purchase price generally becomes the new starting cost for those assets going forward. If a piece of equipment had been substantially written down for tax purposes over the years but is worth considerably more today, an asset purchase lets the buyer start depreciating it again from something much closer to today's value, supporting larger deductions in future years than the buyer would get by simply stepping into the seller's existing, already-reduced cost base.

Why a Share Purchase Doesn't Do This

In a share purchase, the buyer acquires the shares of the corporation, not the assets themselves. The corporation keeps owning its assets at whatever cost base it already had — the purchase of the shares does not, on its own, reset the cost of what the corporation owns inside it. This is one of the clearest tax-driven reasons a buyer might prefer an asset structure even when liability concerns are manageable.

Where the Reset Matters Most

• Depreciable equipment and vehicles, where a fresh, higher cost base supports larger deductions going forward.
• Goodwill and other intangibles, which can carry a cost base under an asset purchase that simply doesn't exist in the same way inside an unchanged corporation.
• Older businesses with long-depreciated assets, where the gap between book cost and actual value tends to be largest.

The size of the benefit depends entirely on the specific assets, their age, and their existing tax cost — this is not a fixed percentage or dollar figure, and your accountant needs to model it against the actual numbers for the business you're buying.

The Trade-Off Sellers Face

The cost-base reset that benefits the buyer is, from the seller's side, often exactly why an asset sale can be less tax-efficient than a share sale. Proceeds land inside the corporation and typically have to be paid out again to the individual shareholder, layering a second round of tax on top of whatever the corporation paid on the sale itself. This is a major reason sellers often prefer shares while buyers prefer assets, and it's frequently resolved through price negotiation rather than either side simply prevailing.

A Different (and More Technical) Kind of "Bump"

Separately, Canadian tax law includes mechanisms — sometimes also referred to informally as a "bump" — that can, in certain share-purchase structures, let a buyer achieve some of an asset purchase's cost-base benefit without actually buying assets directly, typically through a subsequent amalgamation or wind-up. This is a distinct and considerably more technical topic from the straightforward asset-purchase reset described above, and it requires dedicated tax advice on your specific corporate structure — it isn't something to assume is available in a given deal.

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