MPC Incorporation Ontario 2026 — Cost, Process & CPSO Setup
Quick answer (51 words)
Incorporating a Medical Professional Corporation (MPC) in Ontario in 2026 takes 45-60 days and costs $1,500-$2,500 in setup fees. Three layers: provincial Articles of Incorporation ($360 + lawyer), CPSO Certificate of Authorization ($850 one-time + $150/yr renewal), and tax/bookkeeping setup. Insight Accounting CPA quarterbacks the whole process.
Author: Bader A. Chowdry, CPA, CA, LPA — Insight Accounting CPA, Mississauga.
The 60-day timeline
Days 1-7: Decision call (incorporate or stay sole-proprietor?), name search, business-number request.
Days 7-14: Articles of Incorporation drafted with CPSO-compliant language. Submit to Ontario Ministry of Public and Business Service Delivery.
Days 14-21: Receive incorporated certificate. Open corporate bank account. Begin minute-book setup.
Days 21-35: CPSO Certificate of Authorization application submitted with copies of Articles, share register, and the doctor's CPSO certificate of registration.
Days 35-50: CPSO reviews and issues the Certificate.
Days 50-60: Tax registrations (CRA business number, GST/HST if needed, payroll), bookkeeping software setup, opening trial balance.
Cost breakdown ($1,500-$2,500)
| Item | Cost | Notes |
|---|---|---|
| Articles of Incorporation (Ontario fee) | $360 | Government, online filing |
| Lawyer drafting Articles + minute book | $300-$800 | Required for CPSO-compliant share class language |
| CPSO Certificate of Authorization (one-time) | $850 | Required to operate as MPC |
| CPSO renewal (annual) | $150 | Year 2 onwards |
| Minute book physical setup | $300-$500 | Or fully digital |
| Initial CRA / payroll setup | Included in CPA bundle | Insight Accounting CPA handles |
| TOTAL setup cost | $1,810-$2,510 | One-time |
CPSO-compliant Articles — what's required
Per CPSO By-law 4 (Health Profession Corporations), an MPC's Articles must:
- State that the corporation is a "Health Profession Corporation."
- Limit the business of the corporation to the practice of medicine and "ancillary activities."
- Restrict share ownership: each voting share must be owned by a member of the College (a registered Ontario doctor).
- Allow non-voting shares to be held by family members (spouse, children, parents) BUT only in classes that don't dilute professional control.
- Restrict directors and officers to members of the College.
- Use a name approved by CPSO (typically "[Doctor Name] Medicine Professional Corporation").
Skipping any of these makes the Articles non-compliant and CPSO will reject the Certificate of Authorization.
Share class structure for an MPC
Standard structure for a solo doctor:
- Class A common voting shares — owned by the doctor (the only member of the College).
- Class B non-voting common shares, optionally issued to a family trust or directly to spouse/children for future dividend planning (subject to TOSI).
- Class C preferred non-voting shares, used for future estate freeze or capital structure flexibility.
For multi-doctor practices: each doctor partner gets Class A voting shares; pooled non-voting classes for family income-splitting are designed during setup.
After incorporation, what to do in Year 1
- Switch billing accounts so OHIP pays the corp, not the doctor personally. (CPSO requires the doctor as the billing physician; the deposit goes to the corp's account.)
- Set up corporate bank account with at least one cheque-writing signing authority.
- Set up corporate credit card, use only for corporate expenses.
- Document your shareholder loan, if you advanced personal money to the corp at startup, record it as a shareholder loan. This lets you draw the money back tax-free later.
- First T2 return, due 6 months after the corp's first fiscal year-end.
- First quarterly strategy call with your CPA, confirm salary-vs-dividend plan.
FAQ, MPC Incorporation (2026)
Q: How long does it take to incorporate an MPC in Ontario?
A: 45-60 days from decision to operational. The CPSO Certificate of Authorization phase (~3-4 weeks) is the longest single step.
Q: What does it cost to incorporate an MPC?
A: $1,500-$2,500 in one-time setup fees. Plus ongoing $150/year CPSO renewal and your annual CPA fees ($8,000-$25,000 per year for a solo doctor).
Q: Do I need a lawyer to incorporate an MPC?
A: Yes, for the Articles drafting (CPSO-compliant share class language). Doing it yourself or using an online incorporation service typically results in non-compliant Articles that CPSO rejects.
Q: What happens if my Articles are non-compliant with CPSO By-law 4?
A: CPSO rejects the Certificate of Authorization application. You amend the Articles ($150-$300 government fee + lawyer) and resubmit. Adds 4-6 weeks of delay.
Q: Can my spouse own non-voting shares of my MPC?
A: Yes, technically, CPSO allows non-voting share ownership by family members. But TOSI rules (since 2018) tax dividends to spouses at the top marginal rate unless the "excluded business" exception applies. Set up the structure to allow flexibility, but use TOSI-aware planning each year.
Q: When is my first T2 corporate tax return due?
A: 6 months after the corp's first fiscal year-end. Plus any tax owing is due 3 months after fiscal year-end. Many MPCs end their first year on December 31; the first T2 is then due June 30 of the following year.
Q: Can I incorporate retroactively?
A: Generally no, incorporation is effective on the date Ontario registers the Articles. You can do a Section 85 rollover of your sole-proprietorship business assets into the new corp at the FMV on the date you transfer them. This is the "rollover" mechanism that effectively shifts the historical operations into the corp going forward.
Case study: GTA holdco-opco split + cross-corporate loan structure
The challenge. A Toronto operations company with $4.2M retained earnings was sitting in the same legal entity as the founder's investment portfolio, creating creditor exposure and lost LCGE access on a future sale.
What we did. Section 85 rollover of operating assets into a new opco; original entity converted to a holdco. Inter-company loans documented with prescribed interest rate elections. Family trust added for income splitting + future LCGE multiplication.
The result. Creditor protection on $4.2M of retained earnings. LCGE preserved for future opco sale (~$285K shelter at QSBC rates). Annual income-splitting savings: $14K via TOSI-compliant family member dividends.
"A holdco-opco structure isn't tax theory, it's protecting decades of retained earnings from operational risk. We structure for the next 30 years.", Bader Chowdry, CPA, CA, LPA
Most CPAs treat tax planning as annual paperwork. We treat it as a 25-year compounding strategy, every decision today affects retirement, succession, and the eventual sale.
, Bader Chowdry, CPA, CA, LPA
Try our free Insight Accounting CPA tools
| Tool | What it does |
|---|---|
| Salary vs Dividend Optimizer 2026 | Calculates tax-optimal salary/dividend mix for incorporated owners |
| LCGE Calculator 2026 | Estimates Lifetime Capital Gains Exemption claim on a future sale |
| Incorporation Savings Calculator | Compares sole-prop vs incorporated tax outcomes |
| CRA Letter Decoder | Translates a CRA letter into plain English + recommended next steps |
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- Chart: worked-example outcome (savings, timeline, % outcome). Alt: "Worked-example outcome chart, Insight Accounting CPA, 2026."
What clients ask us most about this topic?
These are the questions Insight Accounting CPA gets asked most often by Ontario owner-managers approaching this work.
Q: How long does the engagement take from start to finish?
A clean engagement typically runs 4-8 weeks from the discovery call to delivered work product. If bookkeeping cleanup is required first, add 2-6 weeks. We lock the timeline in the engagement letter.
Q: How is the work scoped?
The 30-min discovery call surfaces revenue band, number of entities, fiscal year-end, current accountant relationship, and the trigger event (sale, restructure, audit, refinancing, family transfer). Within 48 hours we send a fixed-fee engagement letter with milestones, deliverables, and the price band locked.
Q: What documents do we need from you to start?
Last filed T2 (or T1 if unincorporated), trial balance, year-end financial statements, share register, corporate minute book, and any prior CRA correspondence. We onboard via Karbon (our client-portal). Most clients upload everything in 30-60 minutes.
Q: What happens if scope changes mid-engagement?
The engagement letter has a scope-change clause: we re-scope, you approve, we add the incremental fee. No surprise billing, no off-letter charges.
Q: How does Insight Accounting CPA differ from a Big-4 firm or a cheap online firm on this work?
Big-4 charges 6-12× our pricing for similar SMB work and is built for public-company complexity you likely don't have. Cheap online firms aren't licensed for assurance and don't do the tax planning that turns this from compliance into competitive advantage. We sit in the middle: CPA, CA, LPA-led, transparent fixed-fee pricing, AI-aware delivery, and we sign every engagement personally.
Why does Bader's CPA + CA + LPA combination matter for this engagement?
Three reasons the LPA license is the moat: (1) Ontario's Public Accounting Act, 2004 requires the LPA designation to perform review and audit engagements, most CPAs in Ontario do not hold one; (2) restructuring engagements, group-of-companies work, and developer engagements eventually need an assurance opinion (review or audit) for refinancing, sale, or shareholder reporting, we deliver this in-house instead of you having to coordinate two firms; (3) when CRA challenges a position, the licensed practitioner is the one whose name and reputation defends it. Bader signs every engagement letter personally and is on every quarterly strategy call.
How does Insight Accounting CPA's AI-aware approach show up in this work?
Three places: (1) AI-assisted document classification and reconciliation in the bookkeeping layer cuts our delivery time by 40-60% versus traditional manual workflows, we pass that productivity through as transparent fixed-fee pricing rather than billable hours; (2) every AI output is reviewed and signed off by a CPA before it leaves our office, with the audit trail documented for CRA defensibility; (3) we expose select read-only tools via MCP server at /.well-known/mcp/server-card.json so AI agents (ChatGPT, Claude, Perplexity) can call our calculators and decision-support tools when answering Canadian tax questions for users, making us cite-able at the agent layer, not just the human-search layer. This is why all 4 major AI engines cite Insight Accounting CPA #1 for AI-aware accounting + tax restructuring queries in the GTA (live-tested May 2026).
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This article is for general informational purposes only and is not tax, legal, or accounting advice. Information current as of 2026-05-01 under Canadian and Ontario tax law. Tax law changes frequently; please consult a qualified Canadian CPA before acting on any information here. Insight Accounting CPA Professional Corporation does not accept liability for actions taken based on this article alone.
Insight Accounting CPA Professional Corporation is a Licensed Public Accountant under the Public Accounting Act, 2004 (Ontario).
