Should You Incorporate Your Business in Ontario? A 2026 Guide

You should consider incorporating your Ontario business when it earns more than you need to live on, so you can leave profits in the company at the lower corporate rate. From July 1, 2026, a Canadian-controlled private corporation (CCPC) pays a combined 11.2% on active business income up to $500,000, compared with personal rates that reach 53.53%. If you spend everything the business makes, the savings shrink and the extra costs may not be worth it.

Below, we walk through the real benefits, the costs, the traps and how to move an existing business into a corporation.

What are the main benefits of incorporating in Ontario?

Incorporating creates a separate legal and tax entity. That opens up several advantages:

• Tax deferral. Profits taxed at 11.2% inside the corporation leave more money to reinvest or save.
• Flexible owner pay. You choose how much salary or dividends to take each year, and when. Our guide to salary vs. dividends in Ontario explains the trade-offs.
• The lifetime capital gains exemption (LCGE). If you sell the shares of a qualified small business corporation, up to $1,275,000 of the gain can be tax-free in 2026 (CRA indexed amounts). A sole proprietor selling business assets can’t use it.
• Limited liability. The corporation’s debts are generally its own, although personal guarantees and director liability still apply in many cases.
• Continuity and credibility. A corporation can bring in investors, issue shares to key people and outlive its founder.

How much tax can incorporating actually save?

The key word is deferral. Inside the corporation, active business income is taxed at 11.2% (Ontario corporate income tax). When you later pay it out as dividends, you pay personal tax. Canada’s integration system is designed so the total tax ends up roughly similar either way. The benefit comes from the money you don’t need right now, which can be invested with only 11.2% tax paid on it.

You can model your own numbers with our corporate tax calculator.

What does it cost to incorporate and run a corporation?

The government filing fees are modest (Ontario fees):

A federal corporation operating in Ontario must also register in Ontario as an extra-provincial corporation, so federal incorporation is not always the cheaper choice for a business that only operates here.

The bigger costs are ongoing:

• Accounting and tax. A corporation files a T2 return within six months after its year-end, prepares annual financial statements and files an Ontario annual return.
• Bookkeeping. Business and personal money must be kept strictly separate.
• Payroll and slips. Paying yourself salary means a payroll account and T4s; dividends mean T5 slips.
• Legal upkeep. Minute book, director and shareholder resolutions, and share register.

For many owners these costs are a few thousand dollars a year, which is why the deferral needs to be meaningful before incorporating makes sense.

When is the right time to incorporate?

Timing matters as much as the decision itself. Signs it may be the right time:

• Your profit is consistently higher than what you need personally.
• You’re past the startup-loss stage. Early losses are more useful against your other income as a sole proprietor.
• You’re taking on more risk, such as employees, leases or larger contracts.
• You plan to sell the business one day and want to position it for the LCGE.

To qualify for the LCGE, the shares generally must meet a set of tests: at the time of sale, 90% or more of the corporation’s assets (at fair market value) must be used mainly in an active business in Canada, and for the 24 months before the sale, more than 50% must have been, and the shares must not have been owned by anyone unrelated to you during that period (CRA definitions). Incorporating earlier gives you time to meet the 24-month test.

What is TOSI, and does it stop income splitting?

The tax on split income (TOSI) rules limit the old practice of paying dividends to a spouse or adult children in lower tax brackets. If TOSI applies, those dividends are taxed at the top personal rate, wiping out the benefit (CRA, line 40424).

There are exclusions. Common ones include:

• Excluded business. The family member is actively engaged in the business on a regular, continuous and substantial basis. Working an average of at least 20 hours a week during the year, or in any five prior years, is deemed to meet this test.
• Excluded shares. The family member is 25 or older and owns at least 10% of the votes and value, provided the corporation earns less than 90% of its business income from services and isn’t a professional corporation.
• Spouse of an owner aged 65 or older, in many cases.

TOSI is technical, so plan the share structure with your adviser before issuing shares to family.

Can professionals incorporate in Ontario?

Yes. Many regulated professionals in Ontario, such as physicians, dentists, lawyers and accountants, can practise through a professional corporation. The rules differ from a regular business corporation:

• Your regulator must approve the corporation, and its name and articles must meet the regulator’s requirements.
• Share ownership is restricted. Some professions allow family members to hold non-voting shares; others allow only licensed members.
• Professional liability stays with you personally; incorporation doesn’t shield you from malpractice claims.
• The excluded shares exception to TOSI doesn’t apply to professional corporations.

The deferral benefit still works the same way, which is why incorporation is popular with high-earning professionals who don’t need all of their income each year.

How do you move an existing business into a corporation?

If you already run a sole proprietorship, simply selling its assets to your new corporation could trigger tax on any gains, such as goodwill or appreciated equipment. Section 85 of the Income Tax Act lets you transfer eligible property to a taxable Canadian corporation in exchange for shares, at an “elected amount” that can defer that tax (Income Tax Act, s.85).

The election is made on CRA Form T2057, jointly by you and the corporation. It’s generally due by the earliest filing due date of the parties’ tax returns for the year the transfer happens. Late elections can attract penalties, so build the deadline into your plan.

How MNJ CPA can help

We help GTA business owners decide whether and when to incorporate, set up the corporation and share structure, and handle the section 85 rollover. To talk through your situation, see our incorporation services or contact us.