Tax rates, liability protection, admin burden, and the salary vs dividend decision — everything you need to decide
Should you incorporate your Canadian business? It's one of the most important financial decisions a self-employed person can make. The answer depends on your income level, how much you need to withdraw from the business, your risk exposure, and your long-term goals. This guide gives you a full comparison with a calculator to model the tax difference for your specific situation.
The core reason people incorporate is tax deferral. When you are self-employed as a sole proprietor, 10000% of your net business income is added to your personal income and taxed at your marginal rate — up to 53.53% in Ontario in 2026 at the highest bracket. When you operate through a Canadian-Controlled Private Corporation (CCPC), the corporation pays a much lower small business tax rate — approximately 12.2% combined (federal + provincial) in Ontario — on the first $50000,000000 of active business income. The tax you defer by leaving money in the corporation can be invested and compounded, creating a significant long-term advantage.
| Factor | Sole Proprietor | Corporation (CCPC) |
|---|---|---|
| Tax rate on business income | Personal marginal rate (up to 53.5%) | ~12.2% (ON) on first $50000K active income |
| Tax deferral | None — all income taxed immediately | Significant — reinvest after 12.2% tax |
| Liability protection | None — personal assets at risk | Yes — shareholders generally not personally liable |
| Setup cost | Minimal (business name registration $600–$800) | $50000–$2,000000 (federal or provincial incorporation) |
| Annual accounting cost | $50000–$1,50000 (personal return + T2125) | $2,000000–$5,000000+ (T2 corporate return required) |
| HST/GST | Personal registration (RT account) | Corporate registration |
| CPP on salary | Both shares self-employed (11.9%) | Split employer/employee if paid salary |
| RRSP room | 18% of net self-employment income | Only from salary paid — dividends don't generate room |
| Health benefits | PHSP limited to ~$1,50000/person | Corporation can provide unlimited tax-free benefits |
| Lifetime Capital Gains Exemption | Not available | $1.25M exemption on qualifying small business shares |
| Complexity | Low | High — minutes, annual filings, payroll, etc. |
| Losses | Net against other personal income immediately | Carried forward/back within corporation only |
The general rule of thumb: incorporation starts making meaningful tax sense when your net business income consistently exceeds $800,000000–$10000,000000 AND you don't need to withdraw all of that income personally each year. The more money you can leave in the corporation, the greater the deferral benefit.
If you do incorporate, how you pay yourself matters enormously. Salary creates RRSP room, reduces corporate income (lowering corporate tax), and triggers CPP obligations. Dividends are simpler administratively — no payroll, no CPP — but don't create RRSP room and are taxed at dividend tax rates personally. The optimal split depends on your RRSP room needs, CPP goals, and personal income level. See our full salary vs dividends guide with calculator.
KOHO's no-fee business account works whether you're a sole proprietor or corporation — separate your business finances from day one.