When Should a New Physician Incorporate? The First-Year Timing Question

In short: A new physician should incorporate when they consistently earn more than they need to live on, not on day one of practice. Setup costs $2,500 or more, provincial billing takes time to start flowing, and a doctor who takes almost everything out personally to repay residency debt gets no deferral benefit from the corporation. ZAI Wealth Management's rule: practise unincorporated first, clear high-interest debt and build a cash reserve, then incorporate once a few thousand dollars a month is reliably left unspent.

Why day one can backfire

• Billing lag: payments from the provincial plan (OHIP, AHCIP, MSP, MSB and others) often take weeks to arrive.
• Setup time: your college must approve the corporation before billings can flow to it.
• Fixed costs: legal setup, a corporate bank account and a year-end corporate return, often $2,500 or more.
• No surplus yet: if you're still paying down a residency line of credit, you'll take almost everything out of the corporation anyway, so the tax deferral is close to zero.

A simple timing rule

Incorporation pays off when you consistently earn more than you need to live on. Many new physicians practise unincorporated for their first few months, pay down high-interest debt and build a cash cushion, then incorporate once they're reliably leaving a few thousand dollars a month unspent.

Everyone's situation differs, so run it past your accountant. Trained abroad? Read our guide for internationally trained physicians.

Run your own numbers with our Physician Tax Savings Calculator.

For illustration and general information only. Tax rules change and every situation is different, so speak with your advisor and accountant before acting on anything here.

Common questions

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