What Happens If You Don't Have a Shareholder Agreement in Ontario?

When two or more people incorporate a business together and never get around to signing a shareholder agreement, it is easy to assume the corporation is simply ungoverned until they do. It is not. The moment shares are issued to more than one person, the Ontario Business Corporations Act (OBCA) — or the Canada Business Corporations Act (CBCA), for federally incorporated companies — supplies a full set of default rules covering how decisions get made, how shares can move, and what happens when the owners disagree.

The problem is not that these default rules are absent. It is that they were written to work adequately for every corporation in the province, from two friends running a consulting business out of a spare bedroom to companies with dozens of shareholders, and they were not written with your specific relationship, contributions, or expectations in mind. Understanding what applies automatically is the first step toward seeing why so many Ontario business owners eventually replace it with something built for their business — and our free Shareholder Agreement Term-Sheet Builder is designed to help you draft the key terms before a disagreement forces the issue.

Strip away everything a shareholder agreement would normally add, and a multi-shareholder Ontario corporation is left running on a handful of statutory defaults:

• Voting tracks shareholding, share for share. Absent a different structure set out in the articles, common shares generally each carry one vote, so voting power lines up directly with how many shares each person owns — not with who founded the company, who works in it full-time, or who contributed the original capital.
• The board manages the business; ordinary decisions go to a majority. Directors run day-to-day affairs, and most shareholder decisions are approved by a simple majority of the votes cast. There is no default list of "reserved matters" requiring a supermajority or unanimous consent for major decisions like taking on debt, changing the business, or issuing new shares.
• Shares are freely transferable. Unless the articles themselves impose a restriction, a shareholder can generally sell, gift, or otherwise transfer their shares without needing the other owners' approval.
• There is no built-in exit mechanism. The statute tells you how the corporation is governed; it does not tell you how an owner leaves, at what price, or on whose terms.

In short, the default framework is a floor of corporate housekeeping rules. It is not a business plan for a specific set of owners, and it was never meant to be.

The gap in the default rules shows up fastest in a 50/50 ownership structure. Because voting power tracks shareholding exactly, neither owner in an even split can outvote the other, and the statute contains no built-in tie-breaker for shareholder decisions. If the two owners disagree about a material decision — bringing on new financing, changing direction, terminating the other's employment — the default position is simply that nothing happens. The corporation can grind on operationally while every contested decision sits frozen.

A shareholder agreement typically solves this with a deadlock or shotgun mechanism that forces resolution one way or another. Without one, the only paths out of a genuine deadlock are negotiation, mediation, or — as a last resort — a court application, all of which are slower, more public, and more expensive than a clause that could have been drafted in advance. Our guide on how to remove or buy out a shareholder in Ontario walks through what those negotiated and court-ordered exits actually look like once a deadlock has already happened.

Even outside a full deadlock, the absence of an agreement means there is no agreed process for an owner to leave. A well-drafted shareholder agreement typically includes buy-sell provisions, a right of first refusal, or a shotgun clause that gives every owner a defined path to exit or to force a resolution. None of that exists by default.

In practice, this means that if one shareholder wants out and the others are unwilling or unable to buy them out, that shareholder cannot force a sale — and because shares in a small, closely held corporation are rarely something an outside buyer wants to purchase, they may struggle to find any buyer at all. They remain a shareholder, entitled to whatever rights the default rules give them, with no realistic way to convert that stake into cash unless the remaining owners agree to a deal on their own timeline and terms.

Because the default rules do not restrict share transfers, shares in a closely held corporation can end up in hands nobody around the table originally intended. The most common trigger is death: when a shareholder dies, their shares are an asset of their estate like any other property, and pass to whoever inherits under their will or the intestacy rules — a spouse, an adult child, or another family member who may have no interest in, or knowledge of, the business.

The same gap opens on divorce, bankruptcy, or an owner simply deciding to sell to a third party. Whoever ends up holding those shares generally acquires the same voting, information, and dividend rights the original shareholder had, without ever having been vetted by the people they are now in business with. A buy-sell clause with a mandatory-transfer trigger on death, divorce, or insolvency is exactly the tool that closes this gap, and it is one of the clauses covered in our guide to the 7 essential shareholder agreement clauses every Ontario shareholder agreement should include.

Default governance is majority governance: whoever controls more than half the votes controls the board, and the board controls the business. For a majority owner, that can sound like an advantage — until the split is closer than expected and the balance shifts. For a minority owner, it means going into business with almost no structural protection: no reserved-matters list requiring their consent to dilution, executive compensation, related-party dealings, or dividend policy, because nobody negotiated one.

When majority control tips into cutting a minority owner off from dividends, information, or a role in the business entirely, the default rules do not leave that owner with nothing — Ontario and federal corporate statutes both provide a statutory oppression remedy that lets a court intervene in serious cases. But it is a court process, not a contractual right, and it exists precisely because there was no negotiated protection in place. We cover how that remedy actually works, and its real limits, in The Oppression Remedy in Ontario.

None of this means the default rules are unworkable — plenty of corporations operate under them for years without incident, usually because the owners get along and nobody tests the gaps. The risk is that the default rules are only ever tested when something has already gone wrong: a disagreement, a health event, a divorce, a falling-out between founders. A shareholder agreement does not eliminate disagreements; it decides, while everyone is still getting along, how those disagreements get resolved.

At minimum, that typically means a buy-sell or shotgun mechanism, transfer restrictions tied to death, divorce, and departure, a reserved-matters list protecting minority owners on major decisions, and an agreed method for valuing shares so price is not a fight on top of everything else. Our free Shareholder Agreement Term-Sheet Builder walks through each of these terms and produces a draft you can bring to a lawyer, and Lamba Law's shareholder agreement practice drafts and negotiates the final document.

The owners who end up needing a shareholder agreement most urgently are almost always the ones who no longer have the goodwill required to negotiate one calmly. Drafting it now, while the relationship is good and nothing is at stake, is the version of this process that actually works.

At Lamba Law, we help GTA business owners — from two-person startups to established multi-shareholder corporations — put these protections in place before they are tested. This article explains, in general terms, how Ontario's default corporate governance rules operate when no agreement exists; it is not a substitute for reviewing your corporation's actual articles, share structure, and circumstances with a lawyer, since the specifics of your situation can change what protection you actually need.