Incorporating in Ontario: When It Makes Sense

"Should I incorporate?" is one of the most common questions we hear from self-employed people and small business owners in Toronto and North York. The honest answer is: it depends. Incorporating can save or defer a meaningful amount of tax and help with long-term planning. It also adds cost, paperwork and rules that catch people by surprise.

Here is a plain-language overview of the main pros and cons, using rates and figures for 2026.

The main advantages of incorporating

1. A lower tax rate on active business income

A Canadian-controlled private corporation (CCPC) earning active business income can claim the small business deduction on its first $500,000 of that income each year. For 2026:

• Federal: after the small business deduction, the net federal rate is 9%.
• Ontario: the lower rate is 3.2% from January 1 to June 30, 2026, falling to 2.2% for July 1, 2026 onward.

Together that is 12.2% for the first half of 2026 and 11.2% after June 30, 2026. Income above the limit is taxed at the general rates: 15% federal and 11.5% Ontario, for a combined 26.5%. Corporations that are associated with each other (for example, under common control) generally have to share a single $500,000 limit.

2. Tax deferral

The lower corporate rate matters most when you don't need all the profit personally right away. Money left in the company is taxed at the corporate rate. Personal tax is due only when you take it out, for example as salary or dividends. That leaves more money to pay down debt, buy equipment or grow the business.

Keep in mind that much of this benefit is a deferral, not a permanent saving. When the money is eventually paid to you, you pay personal tax on it. Depending on your situation, the total tax at the end may be about the same as if you had earned the income personally.

3. The lifetime capital gains exemption on a future sale

If you eventually sell the shares of your company, you may be able to shelter a large capital gain with the lifetime capital gains exemption (LCGE). According to the CRA, the exemption limit for qualified small business corporation (QSBC) shares is $1,275,000 of capital gains for 2026.

The conditions are strict. Among other things, the shares generally must not have been owned by anyone other than you or a related person in the 24 months before the sale. During that period, more than 50% of the company's asset value must have come from assets used mainly in an active business carried on primarily in Canada. There are additional tests at the time of sale. A sole proprietorship has no shares to sell, so this exemption is generally only available if the business is incorporated.

The rules are unforgiving. In a 2026 Tax Court case (Goudreau v. The King, 2026 TCC 142), the Court noted that the CRA had denied two shareholders' capital gains deduction claims because the 24-month holding requirement was not met. The shareholders did not contest that point.

4. Limited liability

Under Ontario's Business Corporations Act, shareholders are generally not personally liable for the corporation's debts and obligations, with limited exceptions set out in the Act. If the business runs into trouble, your personal assets are generally kept separate from the company's creditors.

5. Flexibility for planning

A corporation can make certain long-term planning easier, such as bringing in a partner, setting up a holding company, or doing an estate freeze to pass future growth to the next generation. These strategies need careful advice and, often, a proper business valuation.

The main disadvantages and pitfalls

1. Extra cost and paperwork

A corporation is a separate legal person, so it needs its own setup and upkeep. That includes legal and accounting fees to incorporate, separate bank accounts and bookkeeping, financial statements, and corporate records.

2. A second tax return, plus an Ontario filing

Every resident corporation must file a T2 corporation income tax return every year, even if it owes no tax, and even if it is inactive. Ontario's corporate income tax is administered by the CRA. In addition, Ontario corporations must file an Annual Return through the Ontario Business Registry within six months of their fiscal year-end. That is all on top of your own personal return.

3. The passive income "grind"

If your corporation builds up investments instead of reinvesting in the business, watch the passive income rule. Federally, when a corporation and its associated corporations earn more than $50,000 of passive investment income in a year, the $500,000 small business limit for the following year is reduced by $5 for every $1 over $50,000. It is eliminated entirely at $150,000. Ontario does not follow this federal rule for its own small business rate, but the federal reduction alone can raise your tax bill.

4. Tax on split income (TOSI)

Before 2018, many owners paid dividends to a spouse or adult children in lower tax brackets. Starting January 1, 2018, the tax on split income rules were extended to adults. Where TOSI applies, the income is taxed at the highest personal rate, which removes the benefit. There are exceptions, for example for family members who work in the business on a regular, continuous and substantial basis (the CRA treats an average of at least 20 hours a week as meeting this test), and for certain shareholders aged 25 or older who own qualifying shares. These rules are complex and need a careful review.

5. Personal guarantees and director liability

Limited liability has limits. Lenders and landlords may ask small business owners to personally guarantee company debts, and if you sign one, you are on the hook for that debt. Directors can also be held personally liable for a corporation's unremitted payroll source deductions and GST/HST, unless they can show they exercised due diligence. Ontario's Business Corporations Act also makes directors liable to employees, within limits, for certain unpaid wages and vacation pay.

6. Losses stay in the company

If the business loses money in its early years, those losses belong to the corporation. They generally can't be used to reduce your other personal income, as they sometimes can in a sole proprietorship.

7. Not every business qualifies for the low rate

If your corporation is essentially providing your services to one client in a way that looks like employment (a "personal services business"), it doesn't qualify for the small business deduction. That can make incorporating costly rather than helpful.

When incorporating typically makes sense

Every situation is different, but incorporating is more often worth considering when:

• Your business is consistently profitable, and it earns more than you need for personal living costs, so you can leave money in the company.
• You plan to reinvest in equipment, staff or growth.
• You may sell the business one day and want to keep the option of using the lifetime capital gains exemption.
• Your business carries meaningful liability risk from contracts, suppliers or customers.
• You want succession or family planning options, such as an estate freeze.

It is often less attractive when:

• You need essentially all of the profit to live on.
• The business is new or not yet profitable, and you might want to use early losses personally.
• Your work could be a personal services business.
• The added cost and paperwork would outweigh the tax you would save or defer.

Next steps

The right answer depends on your income, plans, family situation and risk. We can review your numbers, model the tax impact and explain the trade-offs in plain language. If incorporating makes sense, we can help you set it up properly from the start.

Amir Rosenthal, CPA, CA, LPA, CBV, CFF, serves business owners and individuals in Toronto and North York. Call 416-955-0637 or visit 110 Eglinton Ave W, Suite 201, Toronto.

Disclaimer: This article is general information only and is not legal, tax or accounting advice. Tax rates and rules change, and the figures above are for 2026. Your situation may differ. Please contact us before making any decision about incorporating.