Insights · September 2026 · Corporate Structuring

Who can own shares in your professional corporation

Mid-century abstract illustration: share certificates across five professions
The starting rule is strict. Section 3.2(2) of the Business Corporations Act says all issued shares of a professional corporation must be owned, directly or indirectly, by members of the same profession. Physicians and dentists get an exception allowing non-voting shares for a spouse, child or parent — but you will not find it in section 3.2 itself. It sits in Ontario Regulation 665/05, and is restated as a certificate condition in Ontario Regulation 39/02. Lawyers, accountants and registered psychotherapists get no family exception at all. And on holding companies the regulators split: the Law Society permits one, the medical and dental colleges prohibit one. Both read the same statutory words.

Almost every article on this subject says the family-share rule comes from section 3.2 of the Business Corporations Act. Section 3.2 says the opposite. Paragraph 1 of subsection (2) reads: “All of the issued and outstanding shares of the corporation shall be legally and beneficially owned, directly or indirectly, by one or more members of the same profession.” No spouses, no children, no exceptions on the face of it.

The exception is created by subsection 3.2(6), which lets Cabinet exempt classes of health profession corporations. That power was exercised in O. Reg. 665/05, made under the Business Corporations Act and titled Health Profession Corporations. Section 2 deals with physician corporations and section 3 with dentist corporations, and between them they carry the whole family-share regime.

There is a second regulation, and knowing which is which saves an argument. O. Reg. 39/02 under the Regulated Health Professions Act is titled Certificates of Authorization. It restates the same ownership rules as eligibility conditions for holding a certificate, and then adds everything the College administers: the naming rules, the application and renewal requirements, the notice obligations, and the grounds for revocation. One regulation says who may own the shares. The other says what happens to your certificate if the answer stops being true.

The five regulators, side by side

Voting sharesNon-voting sharesHolding company
CPSO
physicians
CPSO members onlyCPSO members; family members of a voting physician shareholder; individual trustees for minor children of a voting physician shareholderNo. “Holding companies may not own shares in medicine professional corporations.”
RCDSO
dentists
RCDSO members onlySame structure as CPSO, keyed to a voting dentist shareholderNo. “Holding companies may not own shares in a dentistry professional corporation.”
CPA Ontario
accountants
CPA Ontario members, or professional corporations registered with CPA OntarioSame — no family sharesOnly another CPA-registered professional corporation. Not an ordinary holdco.
LSO
lawyers and paralegals
Licensees onlyLicensees only — no family sharesYes, if the holdco is licensee-owned and does nothing but hold the shares
CRPO
psychotherapists
CRPO registrants onlyCRPO registrants only — no family sharesNo

That table is the whole article, and it is worth reading twice if you arrived here having been told that incorporating lets you split income with a spouse. For four of the five, it does not, because the spouse cannot hold shares at all.

What “family member” means, exactly

For physicians and dentists only, the regulations define it tightly: spouse, child or parent of a voting shareholder. Three details in the drafting do real work — and note that while both regulations define “family member,” “child” and “parent,” only O. Reg. 39/02 defines spouse.

“Child” and “parent” both carry an extension for a person who has demonstrated a settled intention to treat the other as a child of the family. That covers step-children and step-parents. CPSO confirms it accepts both — and confirms it does not accept parents-in-law, who are simply not in the definition.

“Spouse” carries no such extension. It means a person you are married to or living with in a conjugal relationship outside marriage. Nothing broader.

And the relationship has to run to a voting shareholder. The regulation defines a “voting physician shareholder” as a College member who owns voting shares. A family member of a non-voting shareholder does not qualify.

And for every other health College — psychotherapy, nursing, optometry, the rest — paragraph 2 of section 1(1) of O. Reg. 39/02 is the whole answer: all of the issued and outstanding shares must be owned by members of the issuing College. No voting and non-voting split, no family carve-out, nothing.

The trust route is narrower than most people expect: non-voting shares only, held legally by one or more individuals as trustees — not a trust company — for children of a voting shareholder who are minors. When the child turns 18 the trust rationale falls away and the child can hold directly as a family member.

The holding company split

This is the part that generates the most confused advice, because the statutory language is identical and the answers are opposite.

The phrase “directly or indirectly” appears in OBCA s. 3.2(2), in Law Society Act s. 61.0.1(4), and in O. Reg. 39/02. The Law Society reads “indirectly” as authorising a licensee-owned holding company, and its information sheet says so plainly: “Holding companies are permitted as shareholders,” provided the holdco’s own shares are restricted to licensees, and “the business of a holding company must be restricted to holding the shares of the professional corporation.” Family members cannot own the holdco either.

CPSO and RCDSO read the same words the other way and prohibit it outright. That is a regulator interpretation difference, not a statutory difference, and no amount of reading the Business Corporations Act will resolve it. If your accountant has recommended a holding company above your medicine or dentistry professional corporation, the College has already answered the question.

Three structural rules that surprise people

Every director and officer must be a shareholder. OBCA s. 3.2(2) paragraph 2. For physicians and dentists the College goes further and requires directors and officers to be shareholders who are College members. The practical consequence: a spouse holding non-voting shares cannot be a director or an officer.

You cannot give away the votes by contract. Section 3.2(4): “An agreement or proxy that vests in a person other than a shareholder of a professional corporation the right to vote the rights attached to a share of the corporation is void.” That closes the workaround of leaving the shares where they must be and moving control elsewhere.

A unanimous shareholder agreement may not be available to you. Section 3.2(5) says a USA in respect of a professional corporation is void unless every shareholder is a member of the profession. A physician’s corporation with a non-voting spouse shareholder therefore has a shareholder who is not a member of the profession — and I have not found any exemption in O. Reg. 39/02 that cures this. If you are relying on a USA in a family-shareholder professional corporation, that is worth a hard look.

Names, fees and the deadlines that revoke certificates

Naming under the health colleges is rigid. The corporate name must include “Professional Corporation,” must include the surname of a College-member shareholder as it appears on the register, must indicate the profession, and must contain no other information. Hence “Smith Medicine Professional Corporation,” and hence the fact that a physician cannot practise through “Downtown Family Health Professional Corporation.” The Law Society is materially more permissive. By-Law 7 asks only that the name be demonstrably true, accurate and verifiable, and not misleading. Number names are prohibited for every professional corporation.

ApplicationRenewalRenewal dateShareholder change notice
CPSO$400$175/yrAnniversary of issue; revoked 60 days after notice15 days
RCDSO$750$175 by 31 July, $200 afterExpires 31 August; revoked 1 SeptemberOn the prescribed form
CPA OntarioRegistration and certificate fees applyBefore, or within 30 days
LSOExpires 31 December; revoked if not renewed within 12 monthsImmediately

Two traps in that table. RCDSO is explicit that you cannot renew a revoked certificate — miss 31 August and the only route back is a fresh $750 application. And the notice obligation is not just a notice: for physicians and dentists, O. Reg. 39/02 s. 4.1 also requires a director’s declaration signed after the change confirming continued compliance with OBCA section 3.2. Failing to give it is an independent ground of revocation.

Separately, section 4 of the same regulation requires prompt notice of any change to the corporation’s name or articles, with a copy of the endorsed certificate — and subsection (2) provides that failing to do so means the corporation ceases to be eligible to hold its certificate. That is automatic, not discretionary, and it is the reason a routine-looking articles amendment should never be filed without dealing with the College.

If the point was income splitting

For physicians and dentists who can issue family shares, the tax rules have moved a long way since the structure became popular. The tax on split income rules deny the “excluded shares” exception to a professional corporation outright — CRA’s guidance lists the professions caught, including medicine, dentistry, law and accounting — and non-voting shares could never satisfy the 10%-of-votes test in any event.

What is left are the excluded business exception, which requires the family member to be genuinely and substantially engaged in the business, the reasonable return test for family members aged 25 and over, and the exception that arrives when the professional spouse turns 65. That last one is the practical landing point for a lot of couples, and it is worth knowing that it arrives at 65 and not before, rather than discovering it after the shares are issued.

None of which is a reason not to incorporate. It is a reason to be clear about what incorporating is for in your case — deferral, creditor separation, succession — rather than assuming it is for a benefit the rules stopped delivering.

Common questions

Can my spouse own shares in my professional corporation in Ontario?

It depends entirely on your profession. Physicians and dentists may issue non-voting shares to a spouse, child or parent of a voting shareholder, under Ontario Regulation 39/02. Lawyers, paralegals, accountants and registered psychotherapists cannot; all shares must be held by licensees or members of the College. Section 3.2 of the Business Corporations Act on its own terms requires all shares to be owned by members of the profession. The family exception comes from Ontario Regulation 665/05 made under that Act, and is restated as a certificate eligibility condition in Ontario Regulation 39/02 under the Regulated Health Professions Act.

Can a holding company own shares in an Ontario professional corporation?

For lawyers and paralegals, yes: the Law Society permits a holding company whose shares are restricted to licensees and whose business is restricted to holding the shares of the professional corporation. For physicians and dentists, no: CPSO and RCDSO both state that holding companies may not own shares in a professional corporation. For CPA Ontario, only another CPA-registered professional corporation qualifies. The statutory words are the same in each case; the regulators read them differently.

Who counts as a family member for a medicine professional corporation?

A spouse, child or parent of a voting physician shareholder. Child and parent both extend to a person who has demonstrated a settled intention to treat the other as a child of the family, which covers step-children and step-parents. Spouse means a married spouse or a person living in a conjugal relationship outside marriage. Parents-in-law are not included, and CPSO confirms it does not accept them.

Can my spouse be a director of my professional corporation?

Generally no. Section 3.2(2) of the Business Corporations Act requires all officers and directors to be shareholders, and for physicians and dentists the College requires directors and officers to be shareholders who are members of the College. A spouse holding only non-voting shares does not qualify.

Can shares be held in trust for my children?

For physicians and dentists only, and on narrow terms: non-voting shares, held legally by one or more individuals as trustees, in trust for children of a voting shareholder who are minors. A trust company cannot be the trustee. Once a child turns 18 the shares can be held directly, because an adult child is a family member in their own right.

Can a professional corporation have a unanimous shareholder agreement?

Section 3.2(5) of the Business Corporations Act makes a unanimous shareholder agreement void unless every shareholder is a member of the profession. A professional corporation with family non-voting shareholders therefore has shareholders who are not members of the profession, and no exemption appears in Regulation 39/02 to cure that. If you are relying on a USA in a family-shareholder professional corporation, get it reviewed.

How quickly must I tell my College about a shareholder change?

CPSO requires notice within 15 days. The Law Society requires notice immediately. CPA Ontario requires it before the change or within 30 days after. RCDSO requires its Notice of Change of Shareholders form. For physicians and dentists there is an additional step: Regulation 39/02 section 4.1 requires a director's declaration signed after the change confirming continued compliance, and failing to give it is a separate ground for revoking the certificate.

What can I call my professional corporation?

For health professions the name must include the surname of a College-member shareholder exactly as it appears on the College register, must indicate the profession, must include the words Professional Corporation, and must contain no other information. That rules out trade-style names. The Law Society's rules are considerably more permissive, requiring only that the name be demonstrably true, accurate and verifiable and not misleading. No professional corporation may have a number name.

Does incorporating still let me split income with my spouse?

Much less than it used to. The tax on split income rules exclude professional corporations from the excluded shares exception, and non-voting shares cannot meet the votes test regardless. What remains is the excluded business exception for a family member genuinely and substantially engaged in the business, the reasonable return test for those 25 and over, and the exception available once the professional spouse reaches 65. Get tax advice on your own facts before issuing shares on the assumption of a benefit.

KS
Written by Koby Smutylo

Koby is a business lawyer and the principal of Smutylo Law+ in Ottawa. Called to the Bar of Ontario in 2001, he has over two decades of experience in corporate, commercial, securities, and technology law, acting for business owners across Canada and for U.S. companies operating in Canada. He is also a trained mediator. More about Koby →

Legal information, not legal advice. For advice on your own situation, book a free 20-minute call.
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