Incorporation is one of the most common questions self-employed Canadians ask. It is also one of the most misunderstood. The tax benefit is real, but it is not automatic, and it does not apply equally to everyone.
This guide explains what incorporation actually does, what it costs, and the specific factors that determine whether it makes sense for your situation.
What Incorporation Actually Does
Incorporation creates a separate legal entity. Your corporation earns income and pays corporate tax on it. You are taxed personally only on what you take out, as salary or dividends.
The primary tax advantage is deferral. Ontario’s combined corporate tax rate on the first CAD $500,000 of active business income is approximately 12.2% under the small business deduction. Ontario’s top personal marginal rate is approximately 53.53%. The gap between those two rates is the deferral opportunity. Money that stays inside the corporation is taxed at 12.2% instead of 53.53%. That difference compounds when reinvested.
The deferral is not a permanent tax reduction. When you eventually withdraw corporate funds, you pay personal tax on the distribution. The benefit is timing.
What It Costs to Incorporate
Incorporation is not free. A straightforward structure typically costs:
- CAD $1,500 to CAD $3,000 to incorporate (legal fees, filing fees)
- CAD $2,000 to CAD $4,000 annually in ongoing accounting and corporate filing costs
- Additional complexity in salary versus dividend decisions, payroll remittances, T4s, and GST/HST
A combined ongoing cost of CAD $3,000 to CAD $6,000 per year for a straightforward structure is a reasonable estimate. That cost needs to be justified by the tax deferral benefit.
The Income Threshold That Usually Makes It Worth Analyzing
The break-even calculation depends on how much income you leave inside the corporation. If you need all your corporate income for personal living expenses, there is nothing to defer.
A common range where incorporation starts to become worth analyzing is around CAD $80,000 to CAD $100,000 of consistent net self-employment income. Below that level, the deferral benefit often does not exceed the additional administrative cost.
Consistency matters as much as the amount. Variable income complicates salary and dividend optimization because optimal compensation structures depend on predictable projections.
The Salary vs. Dividend Decision
Once incorporated, you need to decide how to pay yourself. Salary and dividends have different tax profiles.
Salary creates RRSP contribution room. Dividends do not. Salary results in CPP contributions, which creates a CPP benefit. Dividends do not trigger CPP. Salary is deductible to the corporation. Dividends are paid from after-tax corporate income.
The optimal mix depends on your RRSP room position, your need for CPP coverage, your province of residence, and whether your corporation is making enough profit to make a salary deduction meaningful.
There is no universal answer. The math needs to be run for your specific situation.
Profession-Specific Considerations
IT Contractors and Tech Consultants
Incorporation commonly comes up around CAD $100,000 in annual contract revenue. The most significant risk is the personal services business rule. If your arrangement resembles employment rather than an independent business, CRA can reclassify your corporation as a personal services business, eliminating the small business deduction and most deductions. This is a serious analysis that requires reviewing your client relationships before incorporating.
Mortgage Agents and Insurance Brokers
Commission income suits the corporate structure. Note that HST on financial services commissions has specific exemptions that affect planning. The exemptions depend on the type of service and the arrangement with your brokerage.
Trades Contractors
Liability protection may be the more compelling reason to incorporate at lower income levels. The tax deferral math at CAD $70,000 to CAD $80,000 net income may not justify the administrative cost, but limiting personal liability for client disputes and workplace incidents can be a separate consideration.
Real Estate Agents
Commission income fluctuates significantly year to year, which complicates salary and dividend optimization. Years with low commission income may not leave enough in the corporation to justify the administrative overhead.
Real Estate Investors
Incorporating rental properties introduces several complications: the principal residence exemption does not apply to properties held in a corporation, land transfer tax applies again on transfer, and mortgage qualification becomes more complex. The analysis for real estate investors is materially different from the analysis for professional service providers.
What the Right Answer Depends On
Incorporation may make sense if:
- Your net self-employment income consistently exceeds CAD $80,000 to CAD $100,000
- You do not need all of that income for personal expenses
- Your profession does not carry personal services business risk
- You are prepared for the additional administrative requirements
Incorporation may not make sense if:
- You need most of your income personally each year
- Your income is variable and hard to project
- The administrative cost exceeds the deferral benefit at your income level
- Your situation creates PSB risk that requires ongoing management