Will I pay less tax if I incorporate in Canada?

When incorporation actually saves money

The saving comes from tax deferral, not tax elimination. Profit retained in a Canadian-controlled private corporation is taxed at roughly 9% to 12.2% depending on your province. The same profit earned personally can be taxed at up to 53.53% in Ontario.

That gap is only real on money you leave in the company. The moment you pay it out as salary or dividends, personal tax applies and the combined burden lands close to what you would have paid as a sole proprietor. This is the principle of integration, and it is why "incorporate to save tax" is only half a sentence.

The practical test: if your business consistently earns more than you need to live on, the surplus can stay in the corporation and be invested or reinvested with far more after-tax capital. If you spend everything you earn, incorporation mostly buys you administrative work.

What incorporation costs you every year

Incorporating adds obligations that a sole proprietorship does not have:

• A T2 corporate return every year, separate from your personal T1, due six months after fiscal year-end
• Financial statements, and often a Notice to Reader compilation if a bank or lender is involved
• Corporate minute book maintenance and annual filings with the incorporating jurisdiction
• Separate corporate bank accounts and bookkeeping
• Payroll registration and T4 filings if you pay yourself a salary

Budget realistically for this. If the tax saving is smaller than the added compliance cost, incorporation is a net loss in year one.

The break-even point most owners hit

As a rough guide, incorporation starts to pay when your business profit exceeds your personal spending by roughly $40,000 to $60,000 a year on an ongoing basis. Below that, the deferral benefit on the retained amount rarely covers the added cost and complexity.

This is a guide, not a rule. Two other factors can move the line sharply: whether you need limited liability for the nature of your work, and whether you may sell the business and want access to the lifetime capital gains exemption.

The capital gains exemption argument

Shares of a qualifying small business corporation can be sold with access to the lifetime capital gains exemption, which shelters over $1.25 million of gain per individual. A sole proprietorship has no equivalent, because you are selling assets rather than shares.

If there is any realistic prospect of selling your business, this single factor can outweigh every annual calculation above. Qualifying requires meeting asset and holding-period tests, which take time to satisfy, so the structure needs to be in place well before a sale.

Salary or dividends after you incorporate

Once incorporated you choose how to extract money, and the choice has consequences beyond the immediate tax bill.

Salary creates RRSP contribution room, builds CPP entitlement, and is deductible to the corporation. It also triggers payroll remittances and CPP contributions from both sides.

Dividends avoid CPP and payroll administration, but create no RRSP room and no CPP entitlement. They are paid from after-tax corporate income and taxed at preferential personal rates through the dividend tax credit.

Most owners use a mix, tuned each year to their income needs, RRSP goals and the corporation's cash position. Paying dividends to family members is constrained by TOSI rules, which apply the top marginal rate to split income unless a specific exclusion is met.

What incorporation does not fix

Incorporating does not shelter income you earn personally through employment. It does not make personal expenses deductible. And it does not protect you from a personal services business assessment if you incorporate but work for essentially one client under conditions that resemble employment.

A PSB assessment is severe: the corporation loses the small business deduction and most expense deductions, and pays a federal rate of 33% plus provincial tax. Contractors who incorporate to serve a single former employer are the classic exposure, and the CRA looks for it.