When Should You Incorporate Your Canadian Small Business?

Sole Proprietor vs Corporation: The Core Difference

As a sole proprietor, your business income flows directly to your personal tax return and is taxed at your personal marginal rate — up to 53.5% in Ontario. As a corporation, the company pays a much lower small business rate (12.2% federally + provincially for Ontario-incorporated CCPCs) on the first $500,000 of active business income. The tax savings on the amount left inside the corporation can be substantial.

The $100,000 Tipping Point

If your net business income is $80,000 and you need all of it to cover personal living expenses, a corporation provides little advantage — you will just pay salary or dividends to yourself and the personal tax is similar to operating as a sole proprietor, while adding T2 filing costs of $150–$350 per year.

If your net income is $150,000 but you only need $90,000 personally, the remaining $60,000 left inside the corporation is taxed at only 12.2% (Ontario CCPC) rather than 46–53% personally. That is a deferral of $20,000–$25,000 in taxes each year that can be reinvested, building wealth significantly faster.

Key Benefits of Incorporation

• Tax deferral on income retained in the corporation (12.2% vs up to 53.5% personal)
• Lifetime Capital Gains Exemption (LCGE) — Up to $1.25M tax-free on qualifying small business shares
• Income splitting — Pay dividends to adult family members in lower tax brackets (subject to TOSI rules)
• Limited liability — Personal assets are protected from business creditors
• Salary vs dividend flexibility — Optimize your personal compensation each year
• RRSP contributions — Pay yourself salary to create RRSP room
• Estate planning advantages — Shares can be transferred or restructured

Costs and Downsides of Incorporation

• Incorporation costs — $300–$1,500 to incorporate provincially or federally
• Annual T2 corporate tax return — $100–$350 with Taxxel, depending on complexity
• Payroll setup — If paying yourself a salary, you need a payroll account
• Bookkeeping complexity — Separate bank accounts, intercompany transactions
• Shareholder loans — Must be managed carefully to avoid personal tax consequences
• No personal use of assets — Using corporate assets personally has tax consequences
• Passive income clawback — Investment income inside a corporation can reduce the small business deduction

Canadian-Controlled Private Corporation (CCPC)

To qualify for the small business deduction, your corporation must be a CCPC — controlled by Canadian residents, not publicly traded, and not controlled by a public company. The small business deduction applies to the first $500,000 of active business income per year, taxed at 12.2% federally + provincially (about 12.2% in Ontario for qualifying CCPCs).

Salary vs Dividend: Which Is Better?

This is the central question of corporate tax planning. Salary reduces corporate income (tax deduction) and creates RRSP room and CPP contributions — both valuable. Dividends are paid from after-tax corporate profits and benefit from the dividend tax credit. The optimal mix changes every year depending on your personal income, RRSP room remaining, and corporate tax rate. A good tax accountant runs this analysis annually.