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Sandbagging Clauses in an Ontario Business Sale Agreement, Explained

Understand pro-sandbagging and anti-sandbagging clauses in an Ontario business sale, and whether a buyer can claim on a rep it knew was false.

Buying & Selling a Business6 min readTSLBy the Treadstone Law team · OntarioUpdated 2026-07
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Key takeaways
  • The term describes a scenario where a buyer discovers, during due diligence or before closing, that something the seller represented isn't quite true, but says nothing, closes the deal…
  • A purchase agreement can also simply say nothing about it, in which case the outcome depends on general principles of contract interpretation and the specific facts — an uncertain…
  • From a buyer's perspective, an indemnity is meant to allocate risk according to what the parties agreed to represent and warrant, not according to how thoroughly the buyer happened to…

Buried in the indemnity section of many Ontario business purchase agreements is a clause with an unusual name and a genuinely important effect: the sandbagging clause. It answers a narrow but recurring question — if a buyer knew, before closing, that one of the seller's representations was false, can the buyer still bring an indemnity claim for it after closing? Depending on how this clause is drafted, the answer can be a clear yes, a clear no, or left open to argument.

This article explains where the term comes from, what a pro-sandbagging versus an anti-sandbagging clause actually does, and why the choice between them deserves real attention rather than being left to a default position.

What "Sandbagging" Means in This Context

The term describes a scenario where a buyer discovers, during due diligence or before closing, that something the seller represented isn't quite true, but says nothing, closes the deal anyway, and later brings an indemnity claim based on that same false representation. Whether the purchase agreement should let the buyer do that is the entire debate.

The Two Positions

PositionWhat it saysEffect
Pro-sandbaggingThe buyer's knowledge before closing does not affect its right to claim for a breach of representationThe buyer can claim on a rep it knew was false, as long as the rep itself was in fact breached
Anti-sandbaggingThe buyer cannot claim for a breach of a representation it actually knew was false before closingKnowledge acts as a bar, or at least a defence, to the buyer's later indemnity claim

A purchase agreement can also simply say nothing about it, in which case the outcome depends on general principles of contract interpretation and the specific facts — an uncertain position that most sophisticated buyers and sellers prefer to avoid by addressing it directly.

Why Buyers Generally Prefer a Pro-Sandbagging Clause

From a buyer's perspective, an indemnity is meant to allocate risk according to what the parties agreed to represent and warrant, not according to how thoroughly the buyer happened to investigate before closing. A pro-sandbagging clause protects a buyer who, for example, noticed something questionable during due diligence but reasonably relied on the seller's formal written representation anyway, rather than walking away from the deal or renegotiating price over every open question.

Buyers also point out that requiring perfect, provable ignorance before every indemnity claim would create constant arguments about what the buyer "really knew" and when — arguments that a pro-sandbagging clause avoids by making knowledge simply irrelevant to the claim.

Why Sellers Generally Prefer an Anti-Sandbagging Clause

Sellers see it differently: if a buyer genuinely knew a representation was inaccurate and closed anyway without raising it, allowing an indemnity claim later can feel like the buyer is being compensated for a risk it already knowingly accepted, rather than for something it was actually misled about. An anti-sandbagging clause is meant to encourage buyers to raise known issues before closing, through a price adjustment, a specific indemnity, or a walk-away, rather than staying quiet and collecting later.

Why This Needs to Be Addressed Directly

Leaving the purchase agreement silent on sandbagging doesn't avoid the issue, it just moves the argument to a later date, when a dispute has already arisen and the parties are trying to interpret an agreement that doesn't clearly say what they intended. Because the outcome can turn on general legal principles applied to specific facts, the safer approach for both sides is to negotiate an explicit position up front, whichever way that negotiation goes.

Practical Considerations When Negotiating This Clause

Frequently asked questions

Is "sandbagging" a legal term used in the agreement itself?

It's industry shorthand used in negotiation and legal commentary. The actual purchase agreement will typically use plain contractual language addressing whether the buyer's knowledge affects its indemnity rights, rather than the word "sandbagging" itself.

What happens if the purchase agreement doesn't mention sandbagging at all?

The outcome becomes uncertain and depends on general contract interpretation principles applied to the specific facts, which is exactly the kind of uncertainty most buyers and sellers would rather avoid by addressing the issue directly at the drafting stage.

Does disclosure in the disclosure schedule solve this problem either way?

Largely, yes. If a matter is properly disclosed in the schedule, the underlying representation is typically qualified by that disclosure, so there's no breach to claim on in the first place. The sandbagging debate is really about undisclosed knowledge the buyer picked up some other way, such as during due diligence conversations that weren't formally documented.

Which position is more common in Ontario business sales?

This varies deal by deal and depends heavily on the relative negotiating leverage of the buyer and seller, so it shouldn't be assumed either way. It's a specific clause worth confirming in your own agreement rather than relying on a general assumption.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. Ontario laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a licensed Ontario lawyer. Treadstone Law is licensed by the Law Society of Ontario — reach us at 1-844-900-1070 or start a file online.

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