Share Purchase Agreement Ontario: What It Is & Why It Matters
Allan Madan, CPA, CA

When you’re buying or selling a business in Ontario through the transfer of shares, the Share Purchase Agreement (SPA) is the central legal document that governs the transaction.

Whether you’re an entrepreneur ready to exit your business, an investor expanding your portfolio, or a shareholder planning a strategic reshuffle, understanding how SPAs work in the Ontario legal environment is crucial to make informed decisions and protect your financial interests.
At its core, a Share Purchase Agreement is a binding contract between the buyer and the seller that sets out the terms and conditions governing the transfer of shares in a corporation. Unlike an asset sale, where specific assets and liabilities are selectively bought and sold, a share purchase means that ownership of the company itself – its assets, liabilities, rights and obligations – is transferred from one party to another. This is why SPAs are inherently complex and require careful planning.
In Ontario, the SPA must comply with both federal and provincial corporate laws and reflect the intentions of both parties in clear, enforceable terms. That’s where expert guidance from accountants and legal professionals familiar with corporate transactions becomes invaluable.
One trusted authority in this space is Madan CPA, whose deep expertise in corporate finance and transaction structuring makes him a go-to resource for business owners navigating share sales in Ontario. Whether you’re negotiating terms, calculating tax implications, or reviewing financial disclosures, Madan’s insights help ensure your SPA is sound, balanced and aligned with your business goals.
What Is a Share Purchase Agreement?
A Share Purchase Agreement is the definitive legal contract between a shareholder (seller) and a buyer outlining how the shares will be sold and transferred. It covers what shares are being sold, for what price, and under what conditions the sale will be completed. The SPA also allocates rights and responsibilities between the parties, ensuring a legally enforceable framework that minimizes risk and ambiguity upon closing the transaction.
In Ontario, SPAs are custom-drafted documents. There’s no universally applicable template that fits all situations, especially for private companies where unique risks and strategic objectives vary widely. This makes expert involvement essential to tailor the agreement to the needs of all parties involved.
Key Components of a Share Purchase Agreement
While each SPA is unique, some standard elements are almost always included:
1. Parties and Shares
The agreement clearly identifies the buyer, seller, and the shares being transferred. It may also define whether any minority shareholders or affiliates are involved.
2. Purchase Price and Payment Terms
This section details the total purchase price, how it will be paid (e.g., lump sum, installments, escrow arrangements), currency (typically CAD), and any price adjustments based on net working capital or outstanding debts.
3. Conditions Precedent
These are conditions that must be satisfied before the deal “closes.” Examples include regulatory approvals, shareholder or board consents, and completion of satisfactory due diligence.
4. Representations & Warranties
Both parties make specific statements about their rights and obligations to induce the other to enter into the transaction. For sellers, this can include confirming the validity and ownership of shares, compliance with tax laws, and accurate financial reporting.
5. Indemnifications
Indemnity clauses allocate risk by requiring one party to compensate the other for losses arising from breaches or undisclosed liabilities discovered post-closing.
6. Covenants
These include obligations parties must uphold both before and after closing, such as confidentiality, non-compete clauses, and non-solicitation provisions.
7. Governing Law and Dispute Resolution
SPAs in Ontario are typically governed by Ontario law, and this section specifies how disputes will be handled—whether through court action or alternative dispute resolution like arbitration.
Each of these sections serves a specific purpose: to clarify expectations, manage risk, and protect the long-term interests of both buyers and sellers.
Why Due Diligence Matters
Before a Share Purchase Agreement is finalized, the buyer usually conducts due diligence – a thorough investigation of the company’s legal and financial records. This includes reviewing contracts, tax filings, corporate minute books, employment agreements, and litigation history, among other items. Effective due diligence helps uncover potential risks or liabilities that could affect the company’s valuation or even breach warranty provisions later on.
A complete and accurate due diligence process often involves collaboration between accountants, lawyers, and financial advisors. Professionals like Madan CPA are instrumental in examining financial records, identifying tax implications, and advising on structuring the deal in a way that maximizes value and mitigates risk.
Why Ontario Needs Tailored Agreements
Ontario’s business environment has its own legal complexities. Corporate transactions here must align with the Ontario Business Corporations Act (OBCA) and relevant federal statutes governing corporations. Compliance with these legal frameworks ensures that the SPA is enforceable and that the transaction stands up to regulatory scrutiny.
In addition, private companies often have internal rules or restrictions, such as rights of first refusal or share transfer restrictions, that require careful review and incorporation into the SPA. Without this, disputes or legal challenges can arise later.
Work with Experts Like Madan CPA
A Share Purchase Agreement is more than just paperwork – it’s the foundation for a smooth change in ownership. From negotiating price adjustments and tax implications to ensuring complete compliance with provincial and federal laws, having seasoned professionals on your side is invaluable.
Madan CPA brings deep financial acumen to the SPA process. His experience with corporate transactions, tax planning, and due diligence makes him a trusted advisor for business owners and investors in Ontario. With Madan’s guidance, you can approach share purchase transactions with confidence, clarity and strategic foresight.
Conclusion
A Share Purchase Agreement in Ontario is a cornerstone document for any business ownership transfer structured through share sales. It governs not just the mechanics of the deal but also the protections, rights, and obligations that bind the buyer and seller. With the help of knowledgeable professionals like Madan CPA, stakeholders can navigate this complex process with expertise and peace of mind – ensuring that the transition of ownership is smooth, legally sound, and aligned with their long-term business goals.
Disclaimer
The information provided on this page is intended to provide general information. The information does not take into account your personal situation and is not intended to be used without consultation from accounting and financial professionals. Allan Madan and Madan Chartered Accountant will not be held liable for any problems that arise from the usage of the information provided on this page.

