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The Stages of an Ontario Business Sale: A Timeline Walk-Through

A stage-by-stage walk-through of how an Ontario business sale unfolds, from preparation through marketing, the LOI, due diligence, and closing.

Buying & Selling a Business5 min readTSLBy the Treadstone Law team · OntarioUpdated 2026-07
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Key takeaways
  • Before a business ever reaches a buyer, most of the groundwork happens internally.
  • Whether through a broker or direct approach, this stage is about identifying and reaching realistic prospective buyers while protecting confidentiality.
  • Once a buyer expresses serious interest, negotiation turns to price and key deal terms, typically documented in a letter of intent (LOI).

Selling a business doesn't happen in one step, and it rarely moves in a straight line. Understanding the stages of a business sale timeline — what happens in each one, and roughly what triggers the move to the next — helps sellers set realistic expectations, even without a fixed number of weeks or months attached to any of them.

Every deal is different, and how long each stage takes depends on the size and complexity of the business, how prepared the seller is, and how the buyer is financing the purchase. What follows is the general sequence most Ontario sales move through, in order.

Stage 1: Preparation

Before a business ever reaches a buyer, most of the groundwork happens internally. This stage typically includes:

Sellers who invest real time here tend to move through the later stages with fewer surprises.

Stage 2: Marketing and Buyer Outreach

Whether through a broker or direct approach, this stage is about identifying and reaching realistic prospective buyers while protecting confidentiality. It usually involves a confidential teaser summary, screening for financial capacity and genuine interest, and requiring a signed non-disclosure agreement before releasing detailed information.

Stage 3: Negotiation and the Letter of Intent

Once a buyer expresses serious interest, negotiation turns to price and key deal terms, typically documented in a letter of intent (LOI). An LOI is usually non-binding on price and most commercial terms, but specific provisions — confidentiality, exclusivity, cost allocation — are often drafted to be binding even before a full purchase agreement is signed. This is a critical point to involve your lawyer, not after the LOI is already signed.

Stage 4: Due Diligence

With an LOI in place, the buyer's team conducts a detailed review covering:

This stage is often where deal terms get revisited, if diligence turns up something the buyer didn't expect. How thorough — and how long — this review takes depends heavily on how organized the seller's records were going in.

Stage 5: Purchase Agreement Negotiation

In parallel with, or following, due diligence, the parties negotiate and finalize the purchase agreement — a Share Purchase Agreement or Asset Purchase Agreement, depending on structure. This document sets out representations and warranties, covenants, closing conditions, indemnities, and a disclosure schedule qualifying the seller's representations. Purchase price is often adjusted through a working-capital mechanism, and a holdback or escrow is commonly used to secure post-closing indemnity claims.

Stage 6: Closing

Closing involves satisfying the conditions set out in the purchase agreement — obtaining any required third-party consents (a landlord's consent to a lease assignment is a common example), completing corporate approvals, and exchanging final documents and funds. If the transaction is a sale of all or substantially all of a corporation's assets outside the ordinary course of business, it generally requires shareholder approval by special resolution under the Business Corporations Act or the Canada Business Corporations Act, depending on where the corporation is incorporated.

Stage 7: Post-Closing Transition

The sale isn't necessarily finished at closing. This stage can include a working-capital true-up between an estimated and final closing statement, release of any holdback once the relevant period passes, and practical steps such as updating CRA accounts, business name registrations, and supplier or customer notifications.

Frequently asked questions

Which stage takes the longest?

There's no universal answer — it depends entirely on the deal. Due diligence and purchase agreement negotiation are often where the most back-and-forth happens, particularly if diligence uncovers issues that need to be addressed in the agreement.

Can stages overlap?

Yes. Due diligence and purchase agreement negotiation frequently run in parallel, and preparation for closing often begins before every diligence item is fully resolved.

Does a share sale skip any of these stages?

No, though the emphasis shifts. A share sale generally involves more extensive due diligence, since the buyer inherits the corporation's full history, while some asset-by-asset transfer steps that apply to an asset sale may not be needed.

What happens if diligence turns up a problem partway through?

The parties typically renegotiate price, add specific representations or indemnities, or adjust the closing conditions to address it. It's common, not a sign the deal is doomed, though it can extend the process.

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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