The full path to a properly formed Ontario corporation — what happens at each step, who does it, and how you know you're done.
Who this is for + what you'll get: Anyone setting up a corporation in Ontario — a solo founder, partners going into business together, or a growing company formalizing its structure. You'll get an ordered roadmap with a timeline table, "you're done when" checkpoints, and a plain-language explanation of each filing, from the incorporation decision through your first annual return.
⚖️ This is a general guide, not legal advice. It can't account for your specific situation. Use it to get oriented, then confirm the details with a licensed Ontario lawyer.
Before you start: what incorporation actually does
Incorporating creates a corporation — a separate legal "person," distinct from you. It can own property, sign contracts, sue and be sued, and survive its founders. You own it through shares. The two big reasons people incorporate are limited liability (the corporation's debts are generally its own, not yours personally) and potential tax advantages. The trade-off is more paperwork and ongoing maintenance.
💡 Note on costs and timing: Government filing fees, name-search costs, and processing times change and vary by how you file. This roadmap names the authority for each step rather than quoting a number — always verify the current fee and timeline (ServiceOntario / the Ontario Business Registry, the CRA) before you file.
Timeline at a glance
| Step | Phase | What it covers | Typical timing (varies — confirm) |
|---|---|---|---|
| 1 | Decide jurisdiction | Ontario vs. federal | A day or two of thinking |
| 2 | Choose name type | Named vs. numbered | Same day |
| 3 | Name search | NUANS report | Same day to a few days |
| 4 | Prepare Articles | Share structure, directors, office | A few days |
| 5 | File incorporation | Ontario Business Registry | Often quick once filed |
| 6 | Organize the corporation | By-laws, resolutions, shares, minute book | 1–2 weeks |
| 7 | Tax accounts | Business Number, CRA accounts | A few days |
| 8 | Ongoing filings | Annual return, maintenance | Yearly, forever |
Step 1 — Decide: Ontario or federal incorporation
What happens: You choose whether to incorporate under Ontario law (the Business Corporations Act (Ontario)) or federal law (the Canada Business Corporations Act). Both give you a corporation; they differ in name protection and filing obligations.
- Ontario incorporation is well suited to a business operating mainly in Ontario.
- Federal incorporation gives stronger name protection across Canada and a national identity, but you still register to operate in each province (extra-provincial registration), which adds steps and cost.
Who does it: You, ideally with a lawyer's input if you plan to operate in multiple provinces or want national name rights.
What you need: A clear picture of where you'll operate and whether national name protection matters to you.
✅ You're done with this step when you've chosen Ontario or federal and understand the name-protection and filing trade-off.
Step 2 — Choose a named or numbered company
What happens: You decide whether your corporation will have a name ("Northwind Builders Inc.") or be a numbered company ("1234567 Ontario Inc.", assigned automatically).
- A named company supports your brand and looks more established — but requires a name search and acceptance.
- A numbered company is fast and avoids name conflicts. You can register a business name on top of it later to trade under a brand.
Who does it: You. Many founders who are still settling on a brand incorporate as a numbered company, then add a name later.
What you need: A shortlist of names (if going named) and a sense of how important the corporate name is versus your trademark.
✅ You're done with this step when you've decided named vs. numbered and, if named, have candidate names ready to search.
Step 3 — Run a NUANS name search (named companies)
What happens: You order a NUANS report — a search that compares your proposed name against existing corporate names and trademarks across Canada, so you don't pick something that's taken or confusingly similar.
Who does it: You, a search house, or your lawyer orders the report.
What you need: Your top-choice name and a backup or two, since your first pick may conflict.
⚠️ Watch out: A clear NUANS report helps your name get accepted, but it does not grant trademark rights. If the brand matters, file a separate trademark application with CIPO (the Canadian Intellectual Property Office).
✅ You're done with this step when you have a recent NUANS report supporting an available name.
Step 4 — Prepare your Articles of Incorporation
What happens: You prepare the Articles of Incorporation — the founding document that defines the corporation. The key decisions here shape the company for its whole life, so this step deserves real thought (and usually legal advice).
You'll set:
- Share structure — the classes of shares (e.g., common, preferred), their rights (voting, dividends, what they get on a wind-up), and any special provisions. This is the most important and most often botched part — get it right at the start.
- Directors — who sits on the board (minimum and maximum number). Directors manage the corporation.
- Registered office address — the corporation's official address in Ontario for legal notices.
- Restrictions (if any) on the business the corporation can carry on or on share transfers.
Who does it: Founders, with a corporate lawyer. Share structure mistakes are expensive to unwind, so this is where legal help pays off most.
What you need: Decisions on ownership splits, who controls the company, and whether outside investment is coming (which affects share classes).
✅ You're done with this step when your share structure, directors, and registered office are decided and your Articles are drafted.
Step 5 — File through the Ontario Business Registry
What happens: You submit your Articles of Incorporation to the Ontario Business Registry (the province's online system) and pay the filing fee. Once accepted, the corporation legally exists, and you receive a Certificate of Incorporation and a corporation number.
Who does it: You directly, or your lawyer or a service provider files on your behalf.
What you need: Your finalized Articles, your NUANS report (for named companies), payment, and director information.
💡 Tip: Filing creates the corporation, but it does not organize it — that's the next, equally important step. A corporation that's filed but never organized is incomplete.
✅ You're done with this step when you hold your Certificate of Incorporation and corporation number.
Step 6 — Organize the corporation
What happens: You hold the "first steps" that turn a shell on paper into a functioning company. This is the organizational stage, and it's where the minute book is born.
You'll typically:
- Adopt by-laws — the internal rulebook for how the corporation runs (meetings, signing authority, officers).
- Pass first directors' resolutions — formal decisions appointing the initial directors, adopting by-laws, and authorizing the issue of shares.
- Issue shares to the founders and record them in the share register.
- Appoint officers (e.g., President, Secretary, Treasurer) who handle day-to-day management.
- Set up the minute book — the official record binder (physical or digital) holding your Articles, by-laws, resolutions, and registers.
- Create your register of individuals with significant control (ISC) — a transparency register identifying who really controls the corporation, which privately held Ontario corporations must maintain under the Business Corporations Act.
Who does it: The founders/first directors, almost always with a lawyer who prepares the organizing documents and minute book.
What you need: Founder names and addresses, agreed share allocations, and decisions on by-laws and officers.
⚠️ Watch out: Skipping the minute book is the most common new-corporation mistake. Banks, investors, and buyers will ask to see it, and an incomplete book is a recurring, expensive cleanup item during financing or a sale. Build it correctly at the start.
✅ You're done with this step when your by-laws are adopted, founder shares are issued and recorded, officers are appointed, and your minute book (including the ISC register) is set up.
Step 7 — Get a Business Number and CRA accounts
What happens: You register the corporation with the Canada Revenue Agency to get a Business Number (BN) — the master number all your tax accounts hang off — and open the accounts you need.
Common accounts:
- Corporate income tax (T2) — every corporation files a T2 return, even in a year with no income.
- HST — register if you'll exceed the small-supplier threshold (a revenue level set by the CRA — verify the current amount), or voluntarily to claim input tax credits.
- Payroll — register if you'll have employees, to remit source deductions.
- Import/export — if you'll move goods across the border.
Who does it: You or your accountant.
What you need: Your corporation number, registered address, director details, and a sense of your revenue and hiring plans.
✅ You're done with this step when you have your BN and every CRA account your business needs is open.
Step 8 — Keep up your ongoing filings
What happens: A corporation is a living thing that must be maintained every year — forever — to stay in good standing.
The headline obligation is the annual return: a yearly filing that confirms or updates the corporation's basic information (directors, officers, registered office). It is separate from your tax return. Beyond that, you'll keep the minute book current, hold annual meetings (or sign resolutions in writing), update the ISC register, and file your T2 and any HST/payroll returns.
Who does it: You, with a lawyer or accountant. Many founders set a recurring reminder so the annual return never lapses.
What you need: A simple yearly calendar of deadlines and a habit of updating your minute book whenever something changes.
⚠️ Watch out: Letting filings lapse can lead to your corporation being dissolved by the government — which is a real headache to reverse. See our Annual Corporate Maintenance Checklist to stay on top of it.
✅ You're done with this step when you have a recurring system for your annual return, annual meetings, minute-book updates, and tax filings.
Mini-FAQ
Do I need a lawyer to incorporate? You can technically file yourself, but the share structure and the organizing step (Step 6) are where mistakes are costly and hard to undo. Many founders file the shell themselves and immediately need help cleaning it up — getting it right once is usually cheaper.
Ontario or federal — which is "better"? Neither is universally better. Ontario suits businesses operating mainly in Ontario; federal suits those wanting national name protection and identity. Decide based on where you'll operate and how much the name matters across Canada.
Is a numbered company less legitimate? No. A numbered company is a fully legitimate corporation. You can operate it under a registered business name, so it can carry a brand without a corporate name.
Is incorporating the same as registering a trademark? No. They're separate systems. Incorporating protects the corporate name in a limited way; a registered trademark protects your brand. If your brand matters, do both.
How Treadstone Law can help
Treadstone Law incorporates Ontario businesses end-to-end — choosing the structure, preparing your Articles and share structure, filing through the Ontario Business Registry, and building a proper, financing-ready minute book. We're digital-first and price incorporation at a flat fee, so there are no surprises.
- Start your incorporation online at treadstonelaw.ca/start-file
- See transparent, flat-fee pricing at treadstonelaw.ca/pricing
- Learn more about our business services at treadstonelaw.ca/corporate
- Have questions first? Call 1-844-900-1070
This is not legal advice
This guide is general information, not legal advice. Reading it does not create a lawyer-client relationship. Ontario laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a licensed Ontario lawyer. Treadstone Law is licensed by the Law Society of Ontario — reach us at 1-844-900-1070 or start a file online.