05/30/2026
"I have my own corporation, but I only work for one client." 🚩
If this sounds like your setup, you need to know about the CRA’s "Personal Services Business" (PSB) rule. It’s one of the most expensive tax traps for independent contractors in Ontario.
If you are incorporated but act exactly like an employee (e.g., your client sets your hours, provides your laptop, and you have no other income streams), the CRA might reclassify your corporation as a PSB.
The Penalty:
Instead of paying the highly favorable ~12.2% small business tax rate, your corporate tax rate skyrockets to roughly 44.5%. On top of that, almost all of your standard business deductions—like your home office, internet, and supplies—are completely disallowed. 📉
The Fix:
To protect your corporate tax advantages, you need to prove true independence. You should ideally take on multiple clients, control your own schedule, bear financial risk, and use your own equipment.
Don't wait for a CRA audit to find out they consider you an "incorporated employee." Let’s review your working structure now.