Sole Proprietorship vs. Incorporation in Canada: A Tax Comparison for Freelancers

At some point, every successful freelancer in Canada asks the same question: should I incorporate? The answer is almost always "it depends on how much you earn," but the details behind that answer are worth understanding before you make the decision.

This guide breaks down how each structure is taxed, what incorporation actually costs, and the income level where incorporating starts to make financial sense.

How a Sole Proprietorship Is Taxed

As a sole proprietor, there is no legal separation between you and your business. Your net business income (revenue minus expenses from your T2125) flows directly onto your personal T1 return. You pay personal income tax at your marginal rate.

2025 federal tax brackets:

Taxable Income	Federal Rate
Up to $57,375	15%
$57,375 to $114,750	20.5%
$114,750 to $158,468	26%
$158,468 to $220,000	29%
Over $220,000	33%

Provincial tax rates stack on top. In Ontario, for example, the combined top marginal rate exceeds 53%. In Alberta, it is around 48%.

You also pay both the employer and employee portions of CPP contributions on your self-employment income, up to the annual maximum (approximately $8,800-$8,900 total for 2025 including CPP2).

The upside of a sole proprietorship: simplicity. No separate tax return, no corporate filings, no annual resolutions. You file your T1 with a T2125 attached and you are done.

How a Corporation Is Taxed

When you incorporate, your business becomes a separate legal entity with its own tax return (the T2). The corporation pays tax on its net income at corporate rates, which are significantly lower than personal rates for active business income.

The Small Business Deduction

Canadian-controlled private corporations (CCPCs) benefit from the small business deduction (SBD), which reduces the federal tax rate on the first $500,000 of active business income to 9%.

Combined with provincial small business rates, the total corporate tax rate on active business income varies by province:

Province	Combined Small Business Rate (approx.)
Alberta	11%
British Columbia	12%
Ontario	12.2%
Quebec	12.2%
Manitoba	9%
Saskatchewan	11%

Compare that to personal rates of 30-53% on the same income. The gap is significant, and it is the core reason people incorporate.

The Tax Integration Concept

But that low corporate rate is not the end of the story. The money is inside the corporation. When you take it out -- as salary or dividends -- you pay personal tax on it.

Canada's tax system is designed around the principle of integration: the total tax paid on corporate income (corporate tax + personal tax on withdrawal) should be roughly equal to the tax you would have paid as a sole proprietor on the same income.

In theory, incorporation is tax-neutral. In practice, integration is imperfect, and the real advantage lies in tax deferral -- leaving money inside the corporation and paying the lower corporate rate now, deferring the personal tax hit until you withdraw the funds.

Salary vs. Dividends: How You Pay Yourself

As a corporate owner, you have two main options for extracting money:

Paying Yourself a Salary

• The corporation deducts salary as an expense, reducing its taxable income
• You report the salary as employment income on your personal return
• You (and the corporation) pay CPP contributions, which builds your CPP entitlement
• Salary creates RRSP contribution room (18% of employment income)
• The corporation must remit payroll deductions (CPP, income tax) to the CRA

Paying Yourself Dividends

• Dividends are paid from after-tax corporate income (no deduction for the corporation)
• You receive a dividend tax credit on your personal return, which offsets part of the personal tax
• No CPP contributions on dividend income (saves ~$8,000/year but builds no CPP)
• No RRSP room created from dividend income
• Simpler administration than payroll

The Typical Approach

Most incorporated freelancers use a combination of salary and dividends:

1. Pay yourself enough salary to maximize RRSP contribution room and build CPP
2. Take additional funds as dividends
3. Leave excess funds in the corporation when you do not need them personally

The optimal mix depends on your personal spending needs, RRSP room, and long-term retirement plan. An accountant can model the exact split for your situation.

The Real Advantage: Tax Deferral

Incorporation does not necessarily save you tax in the long run (thanks to integration). What it gives you is deferral. If your business earns $200,000 and you only need $100,000 to live on, the comparison looks like this:

As a sole proprietor: You pay personal tax on the full $200,000, even though you are saving half of it.

As a corporation: The corporation pays ~12% on the full $200,000 ($24,000 in tax). You take out $100,000 as salary/dividends and pay personal tax on that. The remaining ~$76,000 stays in the corporation, invested and compounding, with the personal tax deferred until you withdraw it.

That deferral is where the real value lives. The more income you can leave inside the corporation, the bigger the benefit.

Lifetime Capital Gains Exemption

Incorporating opens the door to the Lifetime Capital Gains Exemption (LCGE), which allows you to shelter up to $1,250,000 of capital gains when you sell qualifying small business corporation shares. This limit was increased from $1,016,836 effective June 25, 2024, with indexation resuming after 2026.

This is relevant if you plan to build your business into something you could eventually sell. As a sole proprietor, you do not have shares to sell, so this exemption is not available.

To qualify, the shares must meet specific conditions (the corporation must be a CCPC, more than 90% of assets used in active business at the time of sale, and a 24-month holding period test). Proper tax planning well in advance of any sale is essential.

The Costs of Incorporation

Incorporation is not free. Here is what it costs to set up and maintain:

One-Time Costs

• Federal incorporation (Corporations Canada): ~$200 online
• Provincial registration: $0-$400 depending on the province
• Legal fees for articles of incorporation and shareholder agreements: $1,000-$3,000

Ongoing Annual Costs

• Corporate tax return (T2): $1,500-$3,000/year for an accountant to prepare
• Annual return filing with the province: $20-$50
• Payroll administration (if paying salary): adds complexity and time
• Corporate minute book maintenance: resolutions, director records
• Separate bank account: some banks charge monthly fees for business accounts

In total, expect to spend $2,000-$4,000 more per year on administration and accounting compared to a sole proprietorship. This overhead must be justified by the tax savings.

When Does Incorporation Make Sense?

The general rule of thumb: incorporation starts making financial sense when your net business income consistently exceeds $100,000-$120,000 per year and you do not need to withdraw all of it for personal expenses.

Here is a more detailed breakdown:

Net Income Range	Recommendation
Under $75,000	Sole proprietorship. Administrative costs outweigh any benefit.
$75,000-$100,000	Possible, but marginal. Run the numbers with an accountant.
$100,000-$150,000	Likely beneficial if you can leave 20%+ in the corporation.
Over $150,000	Almost certainly beneficial. Significant deferral opportunity.

Other factors that push toward incorporation:

• Liability protection (a corporation limits personal liability, though insurance often achieves the same goal)
• You plan to sell the business (LCGE eligibility)
• You want to split income with family members (within the Tax on Split Income rules)
• You have irregular income and want to smooth personal withdrawals across years

Professional Corporations

Some regulated professionals (doctors, dentists, lawyers, accountants, engineers) can incorporate as professional corporations. The rules vary by province and professional body, but the tax benefits are similar. If you are in a regulated profession, check with your provincial association about eligibility and restrictions.

The Bottom Line

Sole proprietorship is simpler and cheaper. Incorporation offers tax deferral and flexibility, but comes with real administrative costs. The decision is ultimately a math problem: will the tax deferral on income left inside the corporation exceed the $2,000-$4,000 annual cost of maintaining the corporation?

For most freelancers earning under $100,000, the answer is no. Above that threshold, especially if you are saving a significant portion of your income, incorporation becomes increasingly attractive. Either way, this is a decision worth making with an accountant who can model the numbers for your specific situation.

Sources

1. CRA - Corporation tax rates
2. CRA - Small business deduction
3. CRA - T2 Corporation Income Tax Return
4. CRA - Lifetime capital gains exemption
5. CRA - Dividend tax credit
6. CRA - Tax on Split Income (TOSI)