Do You Need a Shareholders' Agreement in Ontario?
- Jun 5
- 7 min read

You and your business partner get along great right now. You agree on the big decisions, you trust each other, and things are moving in the right direction. So why would you need a formal agreement spelling out what happens if things go wrong?
That is exactly the question most business partners ask before they wish they had answered it differently.
A shareholders' agreement is one of those documents that feels unnecessary until the moment you desperately need it. This article explains what it is, why it matters, and what it should cover if you are running a corporation in Ontario with one or more co-owners.
What Is a Shareholders' Agreement?
A shareholders' agreement is a private contract between the shareholders of a corporation. It sits alongside your corporate documents and fills in a lot of gaps that the law does not fill in for you.
Ontario's Business Corporations Act gives corporations a basic legal framework to operate, but it does not tell you what happens when your co-owner wants out, or when the two of you can't agree on a major decision, or what happens to a shareholder's shares if they pass away. A well-drafted shareholders' agreement deals with all of that.
Do You Legally Need One?
No. There is no law in Ontario that requires a shareholders' agreement. You can run a corporation without one. But the absence of one often creates problems that could have been avoided very easily.
Without a shareholders' agreement, you are largely left with whatever the Business Corporations Act says, which may not match what you and your partners actually intended. It also means that when disagreements arise, and in most partnerships they eventually do, there is no pre-agreed roadmap for resolving them.
What Should It Cover?
Every business is different, but a solid shareholders' agreement typically deals with several key areas.
Decision-Making
Who gets to decide what? Some decisions, like day-to-day operations, may belong to management. Others, like taking on significant debt, selling a major asset, or bringing in a new shareholder, may require unanimous consent or a supermajority vote. Spelling this out in advance can prevent a lot of friction later on.
What Happens When a Shareholder Wants to Leave
At some point, one of your partners may want to exit. Maybe they want to retire, pursue something else, or they simply want their money out. Without an agreement, there is often no clear mechanism for this, and it can get messy.
A shareholders' agreement can set out how shares are valued when someone wants to leave, whether the remaining shareholders have the right to buy those shares first (sometimes called a right of first refusal), and what the timeline for a buyout looks like. This protects everyone, not just the person leaving.
Transfers of Shares
Can a shareholder sell their shares to anyone they want? In many small businesses, the answer should be no. You probably did not start a company with your partner expecting that their shares could end up in a stranger's hands.
A shareholders' agreement can restrict who shares can be transferred to, and under what conditions. This is sometimes called a share transfer restriction or a right of first refusal clause. It gives the other shareholders the ability to step in and purchase the shares before they go to an outside party.
What Happens on Death or Disability
This is a topic people often avoid, but it matters. If a shareholder dies or becomes seriously disabled, their shares do not just disappear. Depending on the situation, those shares might pass to a spouse or other family member who has no experience with the business, and who now has a say in how it is run.
A shareholders' agreement can address this by giving surviving shareholders the right or obligation to buy out the deceased or disabled shareholder's interest, often in combination with life insurance or disability insurance. Getting the insurance piece right alongside the agreement is important, and you may want to speak with both a lawyer and a financial advisor about how to structure this.
Deadlocks
What happens when you and your co-owner simply cannot agree? If you each own 50% of the shares, neither of you can outvote the other, and the corporation can be stuck.
A deadlock clause gives you a pre-agreed way out. There are different approaches, some agreements include a mediation or arbitration step, others use what is sometimes called a 'shotgun clause,' where one party sets a price and the other must either buy or sell at that price. These mechanisms are not perfect for every situation, and they have real practical implications, so it is worth understanding what you are agreeing to before you include one.
Disputes
Even short of a full deadlock, shareholders sometimes disagree about the direction of the business, how profits are distributed, or whether a particular decision was made properly. A shareholders' agreement can set out a process for resolving disputes, which can save a significant amount of time and money compared to litigation.
Non-Compete and Confidentiality Provisions
If a shareholder leaves the business, should they be free to immediately start a competing company and take your clients with them? Probably not. A shareholders' agreement can include reasonable non-compete and non-solicitation provisions to protect the business in that situation. Whether and to what extent these clauses are enforceable depends on the specific facts, so you should speak with a lawyer about how to draft them carefully.
When Is the Best Time to Put One in Place?
The best time is at the beginning, before any disagreements arise and while everyone is still on good terms. Negotiating the terms of a shareholders' agreement is much easier when there is no immediate conflict driving the conversation.
That said, if you do not have one yet, it is almost never too late to put one in place. The process of sitting down with your co-owners to work through these issues, with the help of a lawyer, can actually be a productive exercise that clarifies everyone's expectations.
A Few Practical Notes
A shareholders' agreement should be reviewed and updated over time as the business evolves.
If your corporation has more than two or three shareholders, the agreement may need to be more detailed.
If shareholders are also employees or officers of the company, the agreement should address what happens to their shares if their employment ends.
A shareholders' agreement works best when it is customized to your actual situation, not pulled from a generic template.
Starting a business with partners can be one of the most rewarding decisions you make. Protecting that partnership with a clear, well-drafted agreement is part of doing it right.
FREQUENTLY ASKED QUESTIONS
Q: We are just two friends starting a company. Do we really need a shareholders' agreement?
A: Many business partners start out thinking a formal agreement is unnecessary because they trust each other. But trust and clarity are two different things. A shareholders' agreement is not about distrust. It is about making sure both of you understand the rules before a difficult situation comes up. Disputes, life changes, and differing visions for the business can happen even among the closest partners. Having an agreement in place before those things happen is almost always easier and less expensive than trying to sort things out afterward. You should speak with a lawyer about what makes sense for your specific situation.
Q: What happens if a shareholder dies and we do not have an agreement?
A: In many cases, the deceased shareholder's shares would pass to their estate and ultimately to their beneficiaries, which may include a spouse, children, or other family members. Those individuals would then hold an ownership interest in your corporation, potentially including the right to participate in decisions about the business. Depending on the situation, this can create significant complications. A shareholders' agreement can set out what happens in advance, including how shares are valued and how a buyout would be funded. It is worth speaking with a lawyer to understand your options.
Q: Can we just use a standard template for a shareholders' agreement?
A: Templates can give you a general idea of what a shareholders' agreement looks like, but they are rarely suitable on their own. Every business has different ownership structures, different risk profiles, and different priorities. A clause that works well for one company may create problems for another. A lawyer can help you draft an agreement that actually reflects how your business works and what your partners have agreed to, which is the whole point of having one.
Q: Is a shareholders' agreement the same as a partnership agreement?
A: Not exactly. A partnership agreement governs a legal partnership, which is a different business structure from a corporation. A shareholders' agreement is specifically for corporations and governs the relationship between the shareholders of that corporation. If you have incorporated your business in Ontario, a shareholders' agreement is the relevant document. If you are operating as a general or limited partnership, you would want a partnership agreement instead. A lawyer can help you figure out which applies to your situation.
CONTACT
If you are starting a business with partners or already running one without a shareholders' agreement in place, DevLaws can help you understand your options. Contact DevLaws today to schedule a consultation.
contact@devlaws.com | +1 437 290 0424 | devlaws.com
DISCLAIMER
This article is provided for general information purposes only and does not constitute legal advice. It is not intended to create a lawyer-client relationship. Laws and regulations can change, and the information here may not reflect the most current developments. Every situation is different, and the information in this article may not apply to your specific circumstances. If you are considering a shareholders' agreement or have questions about your corporation in Ontario, you should consult a qualified lawyer for advice tailored to your situation. DevLaws does not guarantee any particular outcome or result.




