Professional Corporation in Canada: Who Can Incorporate, Rules, and Tax Benefits (2026)

What Is a Professional Corporation?

A professional corporation (PC) is a specific type of corporation permitted under provincial legislation for licensed professionals. Unlike a standard corporation, a professional corporation comes with restrictions on who can own shares, what the corporation can do, and what it can be called — but it still offers the same fundamental tax planning tools as any other CCPC.

The core benefit: instead of earning $400,000 as personal income and paying up to 53.5% tax on the top portion, a professional earns that income through their corporation and pays only ~12% at the corporate level. The remainder stays invested in the corporation for use in retirement, education, or other purposes, which is where passive income inside a corporation starts to matter.

Which Professions Can Incorporate By Province

Always verify with your provincial regulator — rules change and exceptions exist. Some provinces allow expansion of eligible professions; others are more restrictive.

Share Structure Restrictions

This is where professional corporations differ significantly from standard corporations:

Because voting shares must be held by the professional, income splitting via multiple voting shareholders is not available. However, some provinces allow non-voting shares to be held by:

• Spouse or common-law partner
• Children (adults only, in some provinces)
• Family trust (in some cases)

This creates partial income splitting opportunities — a lower-income spouse receiving dividends from non-voting shares can shift income to a lower bracket.

Warning: TOSI (Tax on Split Income) rules apply. Only family members who are actively involved in the business or meet other exemptions are immune from TOSI on corporate dividends.

Tax Deferral: The Core Benefit

The concept: The corporation earns professional income. It pays low corporate tax (SBD rate). You extract income as needed. The remainder defers taxation until you are in a lower tax bracket (retirement).

Ontario Doctor Example: $500,000 Net Billings

Over 20 years, that $161,000 annual deferral compounding inside a corporation is substantial — even after considering the eventual tax on extraction.

What the Corporation Can and Cannot Do

Can Do

• Bill for professional services rendered by the professional
• Employ staff, lease office space, purchase equipment
• Retain after-tax profits and invest them
• Pay salary, bonuses, and dividends to eligible shareholders
• Claim all normal business expenses

Cannot Do

• Carry on a different business (in most provinces, the PC must practice only the regulated profession)
• Engage in activities unrelated to the profession without risk of losing PC status
• Name the corporation deceptively — must include “[Name] [Profession] Professional Corporation” in many provinces

The Personal Service Business Trap

A personal service business (PSB) arises when the relationship between the professional and the entity paying them would be employment if the corporation didn’t exist. Key indicators:

PSB consequences:

• SBD is denied (corporate tax at 26.5% instead of 12.2% in Ontario)
• Most business expense deductions disallowed (only salary, EI, CPP, and benefits to the incorporated employee)
• Potential reassessment of prior years

Most physicians billing through the provincial health plan are not PSBs because they bill the health plan — not a single employer — and control their practice. Professionals working as contractors through a staffing agency or exclusively for a single private employer face higher risk.

Compliance Costs

A professional corporation requires ongoing maintenance:

At net professional income of $150,000+, the tax savings far exceed these costs. Below $100,000, incorporation may not be worthwhile.

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