Incorporating a business is one of the most consequential legal decisions an entrepreneur makes. It determines how profits are taxed, how liability is allocated, and how the business can grow. For many small businesses in Ontario, incorporation is the right move — but doing it properly from the start saves significant expense and complication later. This guide walks through the key decisions and steps involved in incorporating a small business in Ontario.

Federal vs. Provincial Incorporation: Which Do You Choose?

In Canada, you can incorporate either federally under the Canada Business Corporations Act (CBCA) or provincially under the Ontario Business Corporations Act (OBCA). Both create the same basic legal entity — a corporation — but with some practical differences.

Provincial incorporation (OBCA) is generally simpler and less expensive upfront. An Ontario corporation can operate freely throughout Ontario and, with extra-provincial registration, across other provinces. For a business that operates primarily in Ontario, provincial incorporation is usually the right choice.

Federal incorporation (CBCA) provides the right to use your corporate name across Canada without extra-provincial registration in most cases. It also has slightly more flexibility in certain areas of corporate governance. Federal corporations must still register extra-provincially in Ontario before they can operate here.

For most small businesses in the Ottawa area, an Ontario corporation is the most practical and cost-effective starting point. If you plan to expand nationally or if name protection across Canada is a priority, federal incorporation may be worth the additional complexity.

Choosing a Corporate Name or Going Numbered

You can incorporate under a specific name (such as "Silver Crest Consulting Inc.") or as a numbered company (such as "1234567 Ontario Inc."). A named corporation requires a NUANS (Newly Upgraded Automated Name Search) report to confirm that the proposed name is not already in use or confusingly similar to an existing corporate name or trademark. A numbered company skips this step entirely and is often used when the business will operate under a separate trade name registered under the Business Names Act.

Articles of Incorporation

The Articles of Incorporation are the founding document of the corporation. Filed with the Ontario Ministry of Public and Business Service Delivery (for an OBCA corporation), the articles set out:

The share structure is one of the most important decisions at incorporation. Many small corporations use a simple structure with one class of common shares, but more sophisticated structures — using multiple classes of shares with different voting rights, dividend entitlements, and redemption provisions — allow for income splitting, estate planning, and future investment. Getting the share structure right at the start is far cheaper than amending the articles later.

The Minute Book

Every corporation in Ontario is legally required to maintain a minute book — a record of the corporation's foundational and ongoing corporate documents. After incorporation, your lawyer will prepare and organize the minute book, which includes:

Maintaining an up-to-date minute book is not merely administrative best practice — it is a legal obligation under the Ontario Business Corporations Act. Corporations that fail to keep proper records can face complications when seeking financing, selling the business, or dealing with tax authorities.

Key Advantages of Incorporating

Limited Liability

A corporation is a separate legal person from its shareholders. This means that, with certain exceptions, the shareholders are not personally liable for the debts and obligations of the corporation. A sole proprietor, by contrast, is personally liable for every business debt. For businesses that carry risk — whether from contracts, employment, or professional liability — the liability shield of incorporation is often the primary motivation.

Tax Advantages

Canadian-controlled private corporations (CCPCs) that earn active business income qualify for the small business deduction, which reduces the federal corporate tax rate significantly on the first $500,000 of active business income. Combined with the Ontario corporate tax rate, the combined federal-provincial rate for active business income within the small business limit is substantially lower than top personal marginal tax rates. This creates tax deferral opportunities — leaving income in the corporation and drawing it out as salary or dividends when personally advantageous.

Shareholder Agreements

If a corporation has more than one shareholder, a shareholder agreement is critical. The corporate legislation provides default rules that govern shareholder relationships in the absence of an agreement, but those defaults rarely reflect the actual intentions of the parties. A shareholder agreement should address decision-making thresholds, dividend policy, how shares can be transferred, and what happens if a shareholder wants to exit. We cover this topic in depth in our article on shareholder agreements in Ontario.

HST Registration

If your corporation's annual taxable supplies exceed $30,000, registration for HST is mandatory under the Excise Tax Act. Even below that threshold, voluntary registration is often beneficial — it allows the corporation to claim input tax credits on HST paid for business expenses. Your accountant should advise on HST registration timing and whether to use the regular method or the quick method of accounting.

Common Mistakes to Avoid

At Silver Crest Law, we advise entrepreneurs in Ottawa and across Ontario on incorporation, share structure, minute book maintenance, and ongoing corporate governance. Getting the foundation right is the most important legal step your business can take.

This article provides general legal information about incorporating a business in Ontario. It does not constitute legal advice. Tax considerations are general in nature; consult your accountant and a business lawyer for advice tailored to your specific situation.