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The Business Purchase Agreement in Ontario: What Every Buyer and Seller Needs to Know

Learn what goes into an Ontario business purchase agreement — representations, warranties, conditions, indemnities, and closing mechanics — before you sign anything.

Corporate5 min readTSLBy the Treadstone Law team · OntarioUpdated 2026-06
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Once due diligence is done and the parties are ready to commit, the deal is memorialized in a business purchase agreement — either an asset purchase agreement (APA) or a share purchase agreement (SPA). This is the binding contract that governs what is being bought, for how much, and what happens if something goes wrong. For many business owners, the purchase agreement is the longest and most complex contract they will ever sign. This article demystifies its core components so you know what you are looking at — and what to push back on.

The Anatomy of a Business Purchase Agreement

Recitals and definitions

Every purchase agreement opens with recitals (a brief "whereas" narrative) and a definitions section. The definitions section matters more than most people realize: terms like "Business," "Assets," "Assumed Liabilities," and "Closing Date" will be used throughout the document, and their precise scope shapes the entire deal. Read the definitions carefully.

Purchase price and adjustments

This clause states the total consideration and how it is structured — cash, vendor financing, earn-out, shares, or a combination. It also sets out any purchase price adjustment mechanism.

Working capital adjustments are common in larger deals. The parties agree on a target working capital level (current assets minus current liabilities) as of closing. If the actual working capital at closing is higher or lower than the target, the price adjusts accordingly. This protects the buyer from the seller stripping cash out of the business in the days before closing.

Representations and warranties

Representations and warranties (often just called "reps and warranties") are statements of fact that each party makes to the other as of the closing date. For the seller, these typically cover:

The buyer also gives reps and warranties, typically about its capacity to enter the deal and its financing.

Why reps and warranties matter: If a rep and warranty turns out to be false after closing, the buyer has a legal remedy against the seller. This is the primary risk-allocation mechanism in a purchase agreement.

Indemnification

The indemnification clause sets out what happens when a rep and warranty is breached. Typically, the seller agrees to indemnify (compensate) the buyer for losses that arise from a breach.

Key indemnification provisions to watch:

Conditions to closing

A condition is something that must be satisfied (or waived) before either party is obligated to complete the transaction. Typical conditions include:

Each condition should specify who must satisfy it and when. If a condition is not met, the party in whose favour the condition runs can either waive it (proceed anyway) or terminate the agreement.

Covenants

Covenants are promises to do or not do something. Common seller covenants between signing and closing:

Closing mechanics

The closing section describes what happens on closing day:

Post-closing obligations

After the keys are handed over, some obligations continue. Common post-closing provisions:

Frequently asked questions

Who drafts the purchase agreement?

The buyer's lawyer typically prepares the first draft in most deals, since the buyer bears more risk. However, this is negotiable. Either way, both sides must have their own lawyers review and negotiate the agreement.

How long does it take to negotiate a purchase agreement?

For a straightforward small business deal, two to four weeks. Complex deals — multiple properties, employees, regulatory licences — can take longer. Start early so you do not run out of your exclusivity period.

What is a material adverse change clause?

A material adverse change (MAC) clause allows the buyer to walk away if something seriously negative happens to the business between signing and closing — for example, the loss of a major contract. These clauses are interpreted narrowly by courts, so the drafting is important.

Can I get insurance to cover rep and warranty breaches?

Representation and warranty insurance (R&W insurance) exists and is increasingly used in mid-market transactions. It allows the buyer to make claims against an insurer rather than the seller directly. It is typically not cost-effective for very small deals. Ask your lawyer if it makes sense for yours.

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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