The payment test comes before the paperwork
Ask one question first: who can the practice group pay? Course-of-care funding flows from the Ministry to the group under its Transfer Payment Agreement, and from the group to you under the practice agreement. If that agreement contemplates paying only individual midwives, your new corporation earns nothing until the agreement is amended to engage and pay the corporation for your services. Income you have already earned personally cannot be parked in a corporation after the fact, so the sequencing matters: agreement first, then incorporation, then the fee flow switches over cleanly at an agreed date.
This is a conversation with your group as much as with an accountant, and it is why we start every Incorporation engagement for a midwife by reading the practice agreement, not by reserving a name.
Incorporation is also individual, not collective. The practice group itself stays what it is; each midwife who clears the bar forms her own corporation, and the group ends up paying a mix of individuals and corporations under one agreement. That mix is routine, but it has to be written down once, properly, so the group's bookkeeper knows who invoices as what.
What the CMO authorizes, exactly
A midwife's corporation is an Ontario business corporation that holds a Certificate of Authorization from the College of Midwives of Ontario, and the health-profession rules shape it tightly:
- Every issued share must be held by a member of the College. The family-member shareholding exception in Ontario's rules exists only for physicians and dentists; it does not extend to midwives.
- Directors and officers must themselves be shareholders, which in a one-midwife corporation means you, wearing every hat.
- The name must include the words Professional Corporation and meet the College's naming requirements.
- The certificate has to be kept current with the College, and changes to shareholders or the corporate name go back through the CMO, not just the corporate registry.
What incorporation will not change
Three doors people expect this structure to open stay closed. There is no family income splitting: the member-only share rule closes it before TOSI is even reached. There is no shelter from professional liability: a negligence claim follows the midwife personally, certificate or not, which is why liability coverage keeps doing that job; the corporation can, however, properly hold ordinary commercial obligations like a lease or an equipment loan. And there is no HST angle: midwifery services are exempt, so the corporation charges nothing and recovers no input tax credits, exactly as you do now.
Where the value actually sits
What remains is deferral, and for the right midwife it is substantial. Active practice income retained in the corporation is taxed at roughly 12.2% combined on the first $500,000 in Ontario, against personal marginal rates several times higher. The gap becomes real money only when earnings stay inside: an experienced midwife at a full caseload whose household spending sits well below her fees can compound the difference year after year, then draw it out in lower-income years.
| Sole proprietor RM | Health Profession Corporation | |
|---|---|---|
| Who the group pays | You personally | The corporation, once the practice agreement allows it |
| Tax on practice income | Your personal marginal rate on all of it | About 12.2% on retained income up to $500,000 |
| Family shareholders | Not applicable | Not permitted for midwives |
| What you file | T1 with a T2125 | T2 for the corporation plus your T1 for salary or dividends |
| Running cost | Your own records | Corporate books, minutes, certificate upkeep, annual T2 |
The honest break-even: if you reliably spend what you earn, stay unincorporated, fill RRSP and TFSA room, and revisit the question when the surplus appears. We put that answer in writing after a free 15-minute discovery call, and when incorporation does clear the bar we handle the corporation's returns through Corporate Tax Filing and the salary-versus-dividend decisions through Tax Planning & Advisory, so the structure keeps earning its fee after the certificate arrives.
A note on selling, because midwives ask
The $1.25 million lifetime capital gains exemption applies to qualifying small business shares, and in most professions it is a reason to incorporate early. Midwifery is the exception that proves the rule: caseloads and Ministry funding attach to people and groups rather than to saleable goodwill, so practice sales are rare and the exemption is rarely the deciding factor here. We say so plainly rather than selling the structure on an exit that is unlikely to exist.
