Incorporating Your Construction Business in Ontario

Who This Guide Is For

You've decided to start a construction company in Ontario. Maybe you're a licensed tradesperson going out on your own, maybe you're launching a general contracting firm, or maybe you're forming a specialty subcontractor business. Whatever the case, incorporation is your first step. It creates the legal entity that will hold your licences, employ your workers, carry your insurance, and bid on projects.

This guide walks you through every step of incorporating an Ontario construction company, from scratch, with nothing assumed.

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Before You Start: What You Need to Decide

Before you touch a single form, you need answers to these five questions. Get them wrong and you'll be filing amendments later (which cost money and time).

1. Named Company or Numbered Company?

A numbered company is something like 14523876 Ontario Inc. The government assigns the number automatically. A named company is something like Northshore Contracting Inc.

Go numbered if:

• You want to incorporate fast and cheap (skip the name search)
• You plan to operate under a trade name anyway (you can register a "doing business as" name later)
• You're not sure about your branding yet

Go named if:

• You want your legal name on insurance certificates, bid documents, and invoices
• You want to build brand recognition under your corporate name
• You're comfortable paying an extra $75 for a NUANS name search

Most construction companies operate just fine as numbered companies with a registered business name. Don't overthink this.

2. Ontario Provincial or Federal Incorporation?

For most Ontario construction companies, provincial incorporation is simpler. You're working in Ontario, your clients are in Ontario, and you avoid the extra-provincial registration and double annual filings. Federal only makes sense if you plan to work across multiple provinces or want Canada-wide name protection.

3. Who Are Your Directors and Officers?

Ontario requires at least one director who is also the incorporator. There's no Canadian residency requirement for Ontario corporations (unlike federal, which requires 25%+ Canadian residents).

You need to appoint officers, at minimum a President and a Secretary (the same person can hold both). In a one-person company, you're typically the sole director, President, and Secretary.

For each director, you'll need:

• Full legal name
• Home address (not a P.O. box)
• Canadian residency status (yes/no)
• Date they became a director
• Whether they're also an officer, and which title(s)

4. What's Your Share Structure?

Don't overthink this. Most new construction companies use the simplest possible structure:

• One share class: Common shares
• Unlimited authorized shares (this doesn't mean you issue unlimited; it just means you can issue more later without amending your articles)
• One shareholder: You, holding 100 shares at $1.00 each

If you have a business partner, you'll have two shareholders splitting shares however you agree. If you're planning to bring in investors or have preferred shares later, talk to a lawyer, but for Day 1, keep it simple.

5. Where Is Your Registered Office?

Every Ontario corporation must have a registered office address in Ontario. This is where legal documents (lawsuits, government notices) get served. It must be a street address, not a P.O. box.

For most new construction companies, this is your home address. You can change it later when you get a commercial office.

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Step-by-Step: The Incorporation Process

Step 1: NUANS Name Search (Named Companies Only)

If you're going with a named company, you need to run a NUANS (Newly Upgraded Automated Name Search) report before filing. This checks your proposed name against existing corporations and trademarks.

Where: nuans.com or through a search house Cost: ~$75 Processing: Usually instant to a few hours Validity: The NUANS report is valid for 90 days, so file your articles before it expires

Your corporate name must follow this formula:

[Distinctive Element] + [Descriptive Element] + [Legal Suffix]

Examples:

• Northshore (distinctive) + Contracting (descriptive) + Inc. (legal suffix)
• Apex (distinctive) + Electrical Services (descriptive) + Ltd. (legal suffix)

Acceptable legal suffixes: Incorporated, Inc., Corporation, Corp., Limited, Ltd., Limitée, Ltée

Common rejection reasons:

• Name too similar to an existing corporation
• Name is too generic (e.g., "Ontario Construction Inc." is not distinctive enough)
• Missing or incorrect legal suffix
• Name suggests government affiliation or royal patronage

If your name gets rejected, you burn the $75 and need to search again. Pick something distinctive.

Step 2: Prepare Your Articles of Incorporation

The Articles of Incorporation are the founding document of your corporation. In Ontario, this is Form 1 under the Ontario Business Corporations Act (OBCA).

What you're filling out:

1. Proposed corporate name (or "the applicant requests a number name")
2. Registered office address in Ontario (street, city, postal code)
3. Number and type of directors: minimum and maximum (for a solo founder, put "minimum 1, maximum 10" to give yourself flexibility)
4. Share provisions: description of each share class, rights, privileges, restrictions, and conditions. For a simple structure:

   The corporation is authorized to issue an unlimited number of
   Common Shares. Each Common Share entitles the holder to one vote
   at all meetings of shareholders, to receive dividends as declared
   by the directors, and to receive the remaining property of the
   corporation upon dissolution.
   

5. Restrictions on share transfers (optional; most private companies include a restriction requiring director approval for share transfers, which is important for tax purposes under the Income Tax Act)
6. Other provisions (optional)
7. Incorporator information: name, address, signature

The single biggest mistake people make here: Getting the share provisions wrong. If your share provisions are poorly drafted, you may not qualify for the Lifetime Capital Gains Exemption when you eventually sell the business. This is worth over $1M in tax savings. If you're doing this yourself, at minimum include a share transfer restriction clause.

Step 3: File with ServiceOntario (or Corporations Canada)

Ontario Provincial:

• Where: ontario.ca/page/incorporating-business-corporation
• How: Online filing through the Ontario Business Registry
• Cost: $300 (numbered) or $375 (named, includes NUANS pre-search in some packages)
• Payment: Credit card
• Processing: Usually same-day for online filings

Federal (if you chose that route):

• Where: Corporations Canada Online Filing Centre
• Cost: $200 (numbered) or $275 (named)
• Processing: 1-5 business days
• Extra step: You then need to register extra-provincially in Ontario ($60) at the Ontario Business Registry

What to double-check before you hit submit:

• Director names match government ID exactly (middle names matter)
• Registered office address is a real street address in Ontario
• Share provisions are complete and legally sound
• NUANS report (if named) hasn't expired

Step 4: Receive Your Certificate of Incorporation

Once approved, you'll receive:

• Certificate of Incorporation: your "birth certificate" as a corporation, showing your corporation number and date of incorporation
• Certified copy of Articles: the articles you filed, stamped by the government

Keep these safe. You'll need the corporation number for everything that follows: CRA registration, WSIB, bank account, insurance, licensing. You'll need the certificate itself as proof of incorporation for banks, insurers, and project owners.

Your corporation now legally exists. It can open bank accounts, enter contracts, hire employees, and bid on projects, but only once you complete the remaining registrations.

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After Incorporation: Your Corporate Documents

Here's where most people get lost. You have a certificate, but a certificate alone doesn't make your company operational. You need a full set of corporate documents to be legally compliant and to satisfy banks, insurers, and clients who ask for proof of your corporate governance.

What You Need (Your "Minute Book")

A minute book is the official record of your corporation's governance. Every Ontario corporation is legally required to maintain one. Here's what goes in it:

Foundational documents:

• General By-Law No. 1: the operating rules of your corporation (how meetings are called, how directors are elected, how shares are issued, banking authority, fiscal year, etc.)
• Organizational Resolutions: the first resolutions of the directors, which:
  • Adopt the by-laws
  • Appoint officers (President, Secretary, Treasurer)
  • Approve the banking arrangements
  • Set the fiscal year end
  • Issue the first shares to the founding shareholders
  • Waive the appointment of an auditor (if applicable; most small corps can waive)

Corporate registers:

• Register of Directors: current and past directors with appointment/resignation dates
• Register of Officers: current and past officers
• Register of Shareholders: who holds shares, how many, when issued
• Register of Share Transfers: any transfers of shares between parties

Certificates:

• Director Consent forms: written consent of each director to act (signed)
• Share Certificates: physical or digital certificates evidencing share ownership

This is a lot of paperwork. If you're doing it yourself, you'd typically buy a "corporate kit" from a legal supply store ($80-$200) that includes template by-laws, a binder, share certificate blanks, and a corporate seal. You'd then customize all the templates with your company's details.

Your By-Laws: What Matters

Your General By-Law No. 1 is the most important corporate document after your articles. Key provisions:

• Quorum for directors' meetings (usually a majority)
• Banking authority (who can sign cheques, what dollar thresholds require two signatures)
• Fiscal year end (December 31 is default; many construction companies use a different month to avoid tax season crunch)
• Shareholder meeting rules (annual general meeting, notice periods, voting)
• Share transfer restrictions (critical for tax planning)
• Indemnification of directors (protects directors from personal liability for good-faith decisions)
• Borrowing powers (ability to take on debt, mortgages, etc.)

The by-law must be passed by the directors and then confirmed by the shareholders at their first meeting (or by written resolution in lieu of meeting).

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Ongoing Obligations: What You Must Do Every Year

Incorporation isn't a one-and-done event. Your corporation has ongoing legal obligations:

Annual Return

Ontario corporations must file an annual return with the Ontario Business Registry.

• When: Within 6 months of your fiscal year end
• Cost: $15.50 (online) or $34 (paper)
• What: Confirms your registered office address, directors, and officer information is current
• Penalty for non-filing: Your corporation can be dissolved (cancelled) by the government for non-compliance. This is not theoretical; Ontario dissolves thousands of corporations annually.

Federal corporations file two annual returns, one with Corporations Canada and one with Ontario.

Corporate Tax Return (T2)

Every corporation must file a T2 Corporate Income Tax Return with CRA, even if it had no income or activity.

• When: Within 6 months of fiscal year end
• Penalty: $25/day, up to $2,500, plus interest on taxes owing
• Who does this: Typically your accountant

HST Returns

Once registered for HST (covered in Guide 2), you must file returns on your assigned schedule (monthly, quarterly, or annually).

Changes That Require Filings

You must update your corporate records and potentially file with the government when:

• A director is appointed or resigns: update Register of Directors + file Notice of Change
• An officer is appointed or removed: update Register of Officers
• Shares are issued or transferred: update Register of Shareholders + issue new certificates
• Your registered office address changes: file Notice of Change of Registered Office
• Your corporate name changes: file Articles of Amendment ($150)
• Your share structure changes: file Articles of Amendment

Every one of these events should also be recorded in your minute book as a resolution.

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Common Mistakes to Avoid

1. Not maintaining your minute book. Banks, insurers, and project owners (especially on institutional/public projects) will ask for corporate documents. If you can't produce current by-laws, director consents, and registers, you look unprofessional or, worse, you can't get bonded or prequalified.

2. Wrong share provisions. If you don't include a share transfer restriction, you may lose eligibility for the Lifetime Capital Gains Exemption ($1.016M in 2024). This is a very expensive mistake to fix later.

3. Forgetting annual returns. Ontario will dissolve your corporation. Getting it revived costs $400+ and requires filing all missed returns. Meanwhile, your insurance, WSIB, and licences are all tied to an entity that technically doesn't exist.

4. Using your personal name instead of the corporate name on contracts. If you sign a contract as "John Smith" instead of "John Smith, on behalf of 12345678 Ontario Inc.", you may be personally liable. Always sign in your capacity as an officer of the corporation.

5. Not separating personal and corporate finances. Open a business bank account immediately. Mixing personal and corporate funds can lead to the "corporate veil" being pierced, meaning your personal assets become exposed to the corporation's liabilities. This defeats the entire purpose of incorporating.

6. Incorporating before you're ready. Your corporation starts incurring obligations immediately, including annual returns and tax filings. If you incorporate in November but don't actually start working until March, you've created months of unnecessary compliance overhead. Time your incorporation to when you're actually ready to operate.

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What This Costs (Summary)

These are government fees only. If you hire a lawyer to incorporate you, expect to pay $1,000-$2,500 on top. If you use a low-cost online service, $300-$800.

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What Happens Next

With your Certificate of Incorporation in hand, you're ready for the next steps:

• Guide 2: CRA Registration: Register your Business Number, HST, payroll, and corporate tax accounts
• Guide 3: WSIB & Provincial Registration: Mandatory for all Ontario construction companies
• Guide 4: Trade Licensing: Depends on your construction activities (electrical, HVAC, home building, etc.)

You won't be able to open a bank account until you have your certificate + BN. You won't be able to get insurance until you have your certificate. Everything flows from this first step.