Business Trade Name Registration in Ontario: Who Must Register and How
Quick answer: In Ontario, you register a business name (also called a trade name) when you operate under any name other than your own legal name, or when you form a partnership. Registration is filed online through the Ontario Business Registry. It gives you the right to use the name, but it does not create a separate legal entity.
Speak with a Mississauga CPA about your registration
Do I Need to Register My Business in Ontario?
If you are starting a business in Ontario, one of your first questions is whether you need to formally register it — and the answer depends on your business structure, your business name, and how you plan to operate. Understanding Ontario’s business registration requirements upfront saves you from penalties, liability, and complications with banks, CRA, and government programs.
Whether you are starting a sole proprietorship, forming a partnership, or incorporating a corporation, this guide covers every Ontario business registration step. For tax planning and structuring advice once your business is registered, contact Pathak Professional Corporation in Mississauga at 437-872-7399.
Trade Name, Business Name and Legal Name: What Is the Difference?
Your legal name is your own name if you are a sole proprietor, or the registered corporate name if you have incorporated. A business name, often called a trade name, is any other name you use to operate, such as “Smith Consulting” instead of “John Smith”.
Registering a business name gives you the legal right to use it in Ontario. It does not change your liability. A sole proprietor or partner stays personally responsible for business debts, whatever name appears on the invoice.
Incorporating works differently. It creates a separate legal entity, and shareholders are generally protected to the extent of their investment. Incorporation can also change how profit is taxed: the combined Ontario corporate rate on the first $500K is 12.2%, compared with a personal rate that can reach 53.53%. Our comparison of incorporation vs sole proprietorship explains when that difference matters.
Who Needs to Register a Business Name in Ontario?
- Sole proprietors who operate under any name other than their exact legal name.
- General partnerships, which register the partnership name. A written partnership agreement is also recommended.
- Limited partnerships, where registration is mandatory.
- Corporations, which do not register a business name to exist. They are created by incorporation and use their corporate name.
A sole proprietor who works under their exact legal name does not need to register anything, but still has CRA obligations once income passes the HST/GST threshold.
Ontario Business Structures: What Registration Is Required
| Business Structure | Registration Required? | Where to Register | Government Filing Fee | Liability Protection? |
|---|---|---|---|---|
| Sole proprietorship (your own legal name) | No registration needed if using your exact legal name | N/A | $0 | None — personal liability for all debts |
| Sole proprietorship (trade/business name) | Yes — must register business name | Ontario Business Registry (OBR) / ServiceOntario | $60 + HST | None — still personal liability |
| General partnership | Yes — register partnership name and agreement recommended | Ontario Business Registry | $60 + HST | None — partners personally liable |
| Limited partnership | Yes — mandatory registration | Ontario Business Registry | $210 + HST | Partial — limited partners protected to extent of investment |
| Ontario corporation (provincial) | Yes — incorporation required | Ontario Business Registry OR lawyer | $300 + professional fees | Yes — shareholders generally protected |
| Federal corporation (CBCA) | Yes — incorporation + Ontario extra-provincial registration | Corporations Canada + OBR | $200 federal + $60–$80 Ontario extra-provincial | Yes — shareholders generally protected |
Step-by-Step: Registering a Business Name in Ontario (Sole Proprietorship / Partnership)
Step 1: NUANS Name Search (Recommended, Not Always Mandatory for Trade Names)
Unlike corporations, sole proprietorships and partnerships are not required to conduct a NUANS (Newly Upgraded Automated Name Search) before registering a business name in Ontario. However, doing a name search is strongly recommended to confirm you are not using a name already registered by another business in Ontario — which could create trademark issues.
Step 2: Register Through the Ontario Business Registry (OBR)
The Ontario Business Registry is the province’s online portal for business registrations. As of 2021, almost all Ontario business registrations are done online through the OBR:
- Go to ontario.ca/page/ontario-business-registry
- Create a Service Ontario account if you do not have one
- Select “Register a Business Name” (for sole proprietors and partnerships)
- Enter the business name, business address, owner information, and NAICS business activity code
- Pay the $60 + HST registration fee online
- Receive your Master Business Licence (MBL) — usually within 1–2 business days
Step 3: Register for CRA Accounts (HST, Payroll)
Business name registration with ServiceOntario gives you a legal right to use the name — but it does NOT automatically register you for tax accounts with the Canada Revenue Agency. You need to separately register for:
- CRA Business Number (BN): Your 9-digit business identifier with the CRA — register at cra-arc.gc.ca/bn when your business has $30,000+ in taxable revenues (HST/GST registration required) or when you hire your first employee
- HST/GST account: Mandatory when annual taxable revenues exceed $30,000 in any single quarter or cumulative over 4 quarters. Register as early as Day 1 if you prefer — no minimum required
- Payroll deductions account (RP): Needed when you hire your first employee
What to Have Ready Before You File
The online filing goes faster when these details are ready:
- The business name you want to register, after a name search
- The business address
- Owner or partner information
- The NAICS business activity code that best describes what you do
- A Service Ontario account and a way to pay the filing fee online
If you are still deciding between a business name and incorporation, our Ontario business registration overview and the startup accounting checklist help you plan the first few months.
Ask how a business name or incorporation fits your plans
Step-by-Step: Incorporating a Business in Ontario
Option A: Ontario Corporation (Provincial) Under the Business Corporations Act (OBCA)
An Ontario corporation can only operate in Ontario (though it can be licensed in other provinces). Most small businesses incorporate provincially. Our guide to incorporating in Ontario goes deeper on each filing.
- Choose a name or use a number: You can incorporate under a name (e.g., “Pathak Consulting Inc.”) or a number name (e.g., “1234567 Ontario Inc.”). Named corporations require a NUANS name search ($13.80 online) confirming the name is available
- Complete Articles of Incorporation: Form 1 under the OBCA — specifies the corporation’s name, share structure, directors, and restrictions
- File through the Ontario Business Registry: $300 filing fee; typically completed online in 1–5 business days
- Organize the corporation: Complete the organizational resolutions, issue shares, appoint officers, and create the corporate minute book within the first year (mandatory under OBCA)
- Register with CRA: A corporation receives a 9-digit Business Number automatically when incorporated; additionally register for HST, payroll, and corporate income tax (T2) accounts as needed
Option B: Federal Corporation Under the Canada Business Corporations Act (CBCA)
A federal corporation can operate across all Canadian provinces using a single corporate name (subject to provincial business name registration). Benefits include stronger national name protection and ability to use the designation “Canada” in the name.
- Conduct NUANS name search through Corporations Canada (if using a named corporation)
- File Articles of Incorporation with Corporations Canada online — $200 fee
- Register as an extra-provincial corporation in Ontario through the Ontario Business Registry — approximately $60–$80 additional
- Complete organizational resolutions and minute book
- Register with CRA
Ontario Business Registration: Key CRA Tax Accounts
Once an HST/GST account is open, returns are filed online. Our GST/HST Netfile guide walks through the filing steps.
| CRA Account | When Required | Filing Frequency | Deadline |
|---|---|---|---|
| HST/GST | When taxable revenues exceed $30,000 in any 12-month period | Monthly, quarterly, or annual | Varies by frequency |
| Payroll (RP account) | When you hire your first employee | Monthly or accelerated | 15th of following month (regular) |
| Corporate Income Tax (RC account) | Upon incorporation — automatic | Annual (T2 return) | 6 months after fiscal year end |
| Import/Export (RM account) | When importing/exporting goods | Per transaction | Varies |
Business Name Renewal in Ontario
Ontario business name registrations (sole proprietorships and partnerships) expire after 5 years and must be renewed to remain valid. The renewal fee is $60 + HST and is done online through the Ontario Business Registry. Corporations do NOT need to renew their registration — but they must file an annual return with the OBR every year.
Ontario Corporation Annual Return
Ontario corporations incorporated under the OBCA must file an Annual Return with the Ontario Business Registry within 6 months of their anniversary date each year. This is separate from the CRA T2 tax return. The filing fee is $25 for online filing. Failure to file can result in the corporation being dissolved by the province.
Getting Help With Registration and Setup
Registration is only the first step. The structure you choose affects tax, liability, bookkeeping and filing duties from the first year. A small business accountant in Mississauga can review your situation before you file, and the wider accounting firm services cover the ongoing work once you are running.
Fees for professional help depend on the structure, the number of filings, and whether share structure and minute book work are needed, so a quote is required after a short review.
Book a consultation to compare your options
Frequently Asked Questions
Do I need to register a business name if I am a sole proprietor?
It depends on the name you use. If you operate under your exact legal name, you do not need to register a business name. If you use any other name, such as a consulting or services name, you must register it with the Ontario Business Registry before you operate under it.
What is the difference between registering a business name and incorporating?
Registering a business name gives you the legal right to operate under that name. It does not create a separate legal entity, so you remain personally liable for business debts. Incorporating creates a separate legal entity that can own assets, sign contracts, and carry debt in its own name.
Do I need a NUANS name search to register a business name?
Sole proprietorships and partnerships are not required to complete a NUANS search before registering a business name, although a name search is recommended to avoid conflicts with names already in use. A named corporation does need a NUANS search confirming the name is available before it incorporates.
How long does online business name registration take?
Online business name registrations through the Ontario Business Registry are typically processed within one to two business days, after which you receive your Master Business Licence. Incorporations filed online usually take longer, generally between one and five business days, depending on the filing and any corrections needed.
How long does a business name registration last?
A business name registration for a sole proprietorship or partnership expires after five years and must be renewed online through the Ontario Business Registry to stay valid. Corporations do not renew a name registration the same way, but they must file an annual return with the registry each year.
Does registering a business name set up my tax accounts with the CRA?
No. Registering a business name with ServiceOntario gives you the right to use the name, but it does not register you with the Canada Revenue Agency. You must separately register for a business number, an HST/GST account when required, and a payroll account once you hire your first employee.
Talk to a Mississauga CPA about registering your business
Pathak Professional Corporation | 437-872-7399 | 48 Village Centre Place, Mississauga ON L4Z 1V9 | info@pathakcpa.ca
