Sole proprietor or incorporated: the honest comparison

"Should I incorporate?" is one of the first questions a growing sole proprietor asks. Often the honest answer is "not yet," because the big tax advantage only shows up when you leave money in the company.

The tax difference

As a sole proprietor, business profit is your personal income and is taxed at your personal rates in the year you earn it. A corporation pays its own, much lower, tax on profit, and you pay personal tax only on what you take out as salary or dividends.

Where incorporating saves money

• 01Profit you don't need to live on. Profit left in the company is taxed at 11% instead of your marginal personal rate. If you're in a 40% bracket, that's a large deferral on every dollar you can reinvest or save inside the company.
• 02Smoothing income. You choose when to pay yourself, so a big year can be drawn down over several smaller ones.
• 03Selling the business later. Shares of a qualifying small business corporation may be eligible for the lifetime capital gains exemption on a sale, which a sole proprietorship can't use.

The key word is deferral. When the money eventually comes out as salary or dividends, personal tax applies, and the combined total ends up broadly similar to earning it personally. The saving comes from leaving money in the company for years.

Where it just adds filings

• 01You spend everything you earn. If all the profit comes out each year to pay your living costs, there's little to defer and little to save.
• 02The extra costs are real. A corporation files its own T2 return and financial statements, keeps a minute book, and files a B.C. annual report, on top of your personal return. Expect higher accounting fees every year.
• 03Early losses get trapped. A sole proprietor's start-up losses reduce their other personal income. A corporation's losses stay in the corporation and only offset its own future profits.

Other differences

Liability

A corporation is a separate legal entity, which can protect personal assets from business debts. In practice, banks and landlords often ask small-business owners for a personal guarantee, and incorporating doesn't protect you from your own professional negligence, so insurance still matters.

CPP

A sole proprietor pays both halves of CPP on business profit, up to $8,460.90 in 2026. An incorporated owner who takes salary pays CPP through payroll (the company pays the employer half); one who takes only dividends pays no CPP, and builds no CPP pension or RRSP room either.

A rough rule of thumb

Incorporating starts to make sense when your business consistently earns more than you need to live on, so a meaningful amount can stay in the company each year. If every dollar of profit is going to personal expenses, the extra cost and complexity usually outweigh the benefit.