Adding or Removing a Partner in Ontario

Bringing a new partner into an existing business is a significant step, and Ontario’s Partnerships Act has a clear default position on it: absent an agreement saying otherwise, a new partner generally can’t be admitted without the unanimous consent of every existing partner. This default exists because admitting a new partner changes who shares in profits, who has a say in management, and — in a general partnership — whose conduct can create personal liability for everyone else involved.

A written partnership agreement can change this default, for example by allowing admission with a defined supermajority rather than unanimous agreement, or by setting out objective criteria a prospective partner needs to meet. Without such a clause, however, even one dissenting partner can generally block a new admission, which is worth keeping in mind if the partnership anticipates bringing in additional partners down the road.

Timing also matters. Some partnerships prefer to admit a new partner only at a natural break point, such as the start of a new fiscal year, so that profit-sharing calculations, capital accounts, and tax reporting don’t need to be split awkwardly partway through a period. Others admit a partner on a probationary basis first, with full partnership status following only once certain conditions, such as a minimum period of involvement, have been met.

It’s also worth thinking through what admission actually involves in practice beyond consent: what capital or other contribution the incoming partner is expected to make, what share of profits and losses they’ll receive, whether they’re buying into existing goodwill or starting fresh, and whether they’ll sign onto the existing partnership agreement or a newly updated one. Our guide to partnership agreements in Ontario covers how these terms are typically structured.

Removing a partner against their will is one of the more sensitive events a partnership can face, and whether it can be done at all generally depends on what the partnership agreement says. Many agreements include an expulsion clause setting out specific grounds — such as a serious breach of the agreement, misconduct, or prolonged non-participation — along with a defined process for exercising it, often including notice and an opportunity to respond.

Without an expulsion clause, forcing a partner out is considerably harder, and attempting to do so unilaterally can itself expose the remaining partners to a dispute, since partners generally owe each other duties of good faith that an improperly handled removal can be seen to breach. A partner who believes they were wrongfully expelled may seek to have the expulsion challenged, or pursue a claim for their share of the business.

For situations that fall short of outright misconduct — a partner who simply wants out, or whose ongoing involvement no longer suits the business — many agreements provide a voluntary exit or buyout mechanism instead, which tends to be far less adversarial than an expulsion process and better suited to an amicable parting of ways.

It’s also worth thinking about how a removal or expulsion decision is actually communicated, since the manner of a partner’s departure can affect the business’s relationships with clients and staff just as much as the legal mechanics do. A clear, respectful process — even where the underlying reason for removal is serious — tends to leave the remaining partnership in a stronger position than one that becomes public and acrimonious.

One of the most important — and most often overlooked — default rules under the Partnerships Act is this: unless the partnership agreement contains a continuation clause, a partner leaving the partnership, whether by withdrawal, expulsion, or death, can technically dissolve the entire partnership as a legal matter. This is true even if the remaining partners fully intend to keep the business running together.

A continuation clause addresses this directly by stating that the partnership continues among the remaining partners when one partner departs, rather than automatically winding up. This allows the business to carry on without interruption, and without needing to reconstitute itself as a brand-new partnership every time its membership changes.

Where no continuation clause exists and a partner departs, the partnership may technically need to be wound up and a new one formed among the remaining partners if they want to continue — a process that can carry unnecessary administrative, tax, and practical complications that a simple continuation clause would have avoided entirely. Our guide to partnership dissolution in Ontario covers what a full wind-up generally involves.

A partnership’s registered business name in Ontario is meant to reflect who the actual partners are, so when the membership of the partnership changes — whether a partner joins or leaves — the registration generally needs to be updated to stay accurate. Operating under a business name registration that no longer reflects the real partners can create confusion for anyone relying on the public record, including creditors, landlords, and regulators.

Beyond the registration itself, a change in partners often has knock-on effects for other filings and accounts: banking arrangements, tax registrations, licences and permits, and any contracts that specifically named the outgoing or incoming partner may all need to be reviewed and updated. Treating a partner change as purely an internal matter, without working through these downstream updates, is a common and avoidable oversight.

It’s worth building a simple checklist for this the first time a partner change happens, since the same categories of filings and accounts will generally need updating again the next time the partnership’s membership changes. Keeping a record of what was updated, and when, also helps demonstrate that the partnership treated the change seriously if a dispute about timing or notice ever arises later.

Giving clear notice that a partner has left is important for more than just good communication — it’s also a key factor in limiting that outgoing partner’s ongoing exposure to debts the remaining partners incur after their departure. A third party who previously dealt with the partnership and was never told a partner left may still reasonably treat that former partner as having authority to bind the business, which can create liability exposure for someone who is, in reality, no longer involved at all.

Practically, this generally means notifying existing clients and creditors directly, and updating public-facing information — the business name registration, website, letterhead, and any other place the public would reasonably look to see who’s behind the business. The more prominent and complete this notice is, the stronger the outgoing partner’s position if a dispute ever arises about whether they should be treated as liable for something that happened after they left.

Nearly all of the uncertainty around adding or removing a partner can be reduced significantly by addressing it directly in a written partnership agreement — the threshold for admitting a new partner, the grounds and process for removing one, a continuation clause so the business survives a partner’s departure, and a defined exit or buyout mechanism for valuing and paying out a departing partner’s share.

If your partnership doesn’t currently have terms addressing these events, it’s generally worth adding them while the relationship between partners is still functional, rather than waiting until a specific partner change is already underway and emotions or financial pressure are running high. Visit our Partnerships hub for more on how Ontario partnerships are generally structured, or our tools page for related resources.