What actually changes in a Share Purchase vs Asset Purchase in Ontario? The distinction defines the transaction, shaping which liabilities the buyer inherits and how contracts transfer. It also shapes how the deal gets taxed. This guide explains what separates the two structures. It also covers why the choice is structural, not a matter of preference.
Key Takeaways Share Purchase vs Asset Purchase
- In a share purchase, the buyer acquires the company itself, including its assets and liabilities.
- In an asset purchase, the buyer selects specific assets to acquire, leaving the rest behind.
- Liabilities follow the shares in a share purchase. In an asset deal, they must be specifically assumed.
- Contracts may transfer automatically in a share deal, but often require third-party consent in an asset deal.
- Tax treatment differs significantly between the two structures, affecting both buyer and seller outcomes.
- The choice of structure determines what risks the buyer inherits and how the transaction gets executed.
This guide draws on more than ten years of experience structuring share and asset purchases for Ontario business transactions.
Share Purchase vs Asset Purchase in Ontario: The Core Distinction
Every business purchase in Ontario starts with a choice between two structures. That choice shapes almost everything that follows.

What Is a Share Purchase?
In a share purchase, the buyer acquires the company itself. This includes the corporation's assets, its contracts, its employees, and its liabilities, known and unknown.
The business continues operating as the same legal entity. Ownership simply changes hands from the old shareholders to the new ones. Nothing about the corporation's existing obligations disappears in the process.
What Is an Asset Purchase?
In an asset purchase, the buyer selects what gets acquired and what gets left behind. Rather than buying the company itself, the buyer purchases specific assets. This can include equipment, inventory, intellectual property, and selected contracts.
The seller's corporation continues to exist after closing. It typically retains whatever was not included in the sale, along with its own liabilities. The buyer usually operates the acquired assets through a new or existing entity of its own.
Why Deal Structure Is a Structural Decision, Not a Preference
It is tempting to treat the choice between a share purchase and an asset purchase as a matter of taste. It is not.
The structure determines what the buyer is actually exposed to and how much due diligence needs to focus. It also shapes how the deal gets priced and taxed. Choosing the wrong structure for a given business can create liability exposure that has nothing to do with negotiating skill. It has everything to do with how the transaction was built.
What Changes in a Share Purchase vs Asset Purchase in Ontario
Three areas change the most between the two structures, and each deserves its own attention during negotiations.

Who Inherits the Liabilities
In a share purchase, liabilities follow the shares. The buyer inherits the corporation's obligations along with its assets. This includes liabilities that were not identified during due diligence.
In an asset purchase, liabilities generally stay with the seller's corporation unless the buyer agrees to assume them. This gives the buyer more control over which risks it takes on. Some liabilities, like employment and environmental obligations, can still follow specific assets no matter the structure.
This is one of the main reasons buyers often prefer an asset purchase. It offers a cleaner way to limit exposure to liabilities that have not yet surfaced.
Contract Assignment and Third-Party Consent
Contracts behave differently depending on the structure. In a share purchase, the corporation's existing contracts generally continue without interruption. The legal entity holding them has not changed.
In an asset purchase, contracts often need to be formally assigned to the buyer. Many contracts require the counterparty's consent before that assignment is valid. A landlord, supplier, or key customer might need to approve the transfer before the buyer can rely on that contract after closing.
This makes contract review a critical part of due diligence in an asset deal. A contract that cannot be assigned can materially change what the buyer is actually getting.
Tax Treatment for Buyers and Sellers
Tax treatment differs significantly between the two structures, and this is often where the parties' preferences diverge.
Sellers often prefer a share purchase for the potential tax advantages available on the sale of qualifying shares. Buyers often prefer an asset purchase, since it can allow for a step-up in the tax basis of the acquired assets. This creates future depreciation benefits that a share purchase typically does not offer.
These tax outcomes depend heavily on the specific circumstances of the business and the parties involved. This is why structure decisions are usually made with input from both legal and tax advisors.
How the Choice of Structure Shapes the Rest of the Deal

The structure chosen early in a transaction affects almost every stage that follows.
It shapes what due diligence needs to focus on. A share purchase requires closer scrutiny of the corporation's full liability history. An asset purchase requires closer attention to which contracts and assets can actually be transferred. It affects how representations and warranties get drafted. The seller is making different promises depending on what is actually being sold.
It can also affect timing. An asset purchase involving several contracts that require third-party consent may take longer to close than a share purchase. Those consents need to be collected before closing can happen. For a full walk-through of these stages, see our guide on buying a business in Ontario from letter of intent to closing.
How to Choose: Share Purchase vs Asset Purchase in Ontario
Neither structure is automatically better. The right choice depends on the specific business, its liability profile, its contracts, and what each party is trying to achieve.
A business with a long operating history and significant unknown liability risk often pushes buyers toward an asset purchase. A business with contracts that cannot easily be assigned often pushes toward a share purchase instead. So does a seller focused on tax treatment.
These considerations are usually worked out early, often before the letter of intent is finalized. The structure affects how the rest of the deal gets negotiated.
How Employees Are Treated in a Share Purchase vs Asset Purchase

Employees are affected by this choice in a way that often gets overlooked until late in the process.
In a share purchase, employment relationships continue automatically, since the employer, the corporation itself, has not changed. Employees keep their existing terms, tenure, and entitlements without interruption.
In an asset purchase, the buyer is not automatically the employer of the seller's staff. Employees generally need to be offered new employment with the buyer. How that offer is structured affects whether prior service, vacation entitlements, and other accrued obligations carry forward. Handled poorly, this can create unexpected severance exposure if employees are treated as terminated rather than transferred.
This is one more reason the structure decision should be made early. It leaves enough time to plan how employees will be treated before the deal moves toward closing.
The Bottom Line on Share Purchase vs Asset Purchase in Ontario
The distinction between a share purchase and an asset purchase in Ontario is not a formality. It determines which liabilities the buyer inherits, how contracts transfer, and how the transaction gets taxed.
Getting this choice right at the outset shapes everything that follows, from due diligence to the final closing documents. Getting it wrong can be expensive to unwind later.
If you are preparing to buy or sell a business in Ontario, our team at Levine Law can help. We can evaluate which structure fits your situation and negotiate the terms that follow from that choice.
Frequently Asked Questions
What is the main difference between a share purchase and an asset purchase in Ontario?
A share purchase transfers ownership of the entire company, including its liabilities. An asset purchase transfers only the specific assets and liabilities the parties agree to include.
Which structure is better for the buyer?
Buyers often prefer an asset purchase because it limits exposure to unknown liabilities. The right choice still depends on the specific business and its contracts.
Which structure is better for the seller?
Sellers often prefer a share purchase, partly for tax advantages and partly for a cleaner, full exit from the business.
Do contracts automatically transfer in a share purchase?
Generally yes, since the legal entity holding the contracts does not change. In an asset purchase, many contracts require the counterparty's consent to transfer.
Do liabilities automatically transfer in an asset purchase?
No. Liabilities generally stay with the seller's corporation in an asset purchase, unless the buyer agrees to assume them.
Does the structure affect how the deal is taxed?
Yes. Share purchases and asset purchases are taxed differently. The right structure often depends on the specific tax circumstances of both parties.
Can the structure change after a letter of intent is signed?
It can, but changing structure after diligence has started often means renegotiating major deal terms. It is best decided as early as possible.
Does the structure affect how long the deal takes to close?
It can. An asset purchase with several contracts needing third-party consent may take longer than a comparable share purchase.
