You should register your Ontario sole proprietorship as soon as you operate under any name other than your own legal name, or before you cross $30,000 in revenue and need to register for GST/HST. Registration costs $60 online through the Ontario Business Registry and takes minutes to process. Waiting past either of those triggers puts you in a legal grey zone that can complicate banking, taxes, and contracts.
What Counts as a Sole Proprietorship in Ontario?
A sole proprietorship in Ontario is an unincorporated business owned by one person, with no legal separation between the owner and the business. There’s no separate entity, no shareholders, and no corporate tax return. You report business income directly on your personal T1 tax return.
This is the default structure the moment you start earning money from a side hustle – Etsy shop, freelance design work, consulting, dog walking. You don’t need to file anything to become a sole proprietor. The question this article answers is when you need to register the name.
When Exactly Do You Need to Register?
You need to register your business name with the Ontario Business Registry (OBR) in these specific situations:
- You operate under any name other than your exact legal name. “Sarah Chen Photography” or “Chen Creative Co.” both require registration. If you invoice as just “Sarah Chen,” you don’t.
- You want to open a business bank account. Most banks require your Master Business Licence (now called a Business Name Registration) before they’ll open an account in your business name.
- You’re approaching CRA’s $30,000 small supplier threshold. Once your revenue over four consecutive calendar quarters hits $30,000, you must register for a GST/HST account with the CRA, and having your OBR registration in place first makes that process smoother.
- You want to apply for business credit, contracts, or grants. Many suppliers, landlords, and government grant programs require proof of registration before they’ll deal with you as a business.
- You’re hiring your first contractor or employee. You’ll need a CRA Business Number, and provincial registration is typically requested as supporting documentation.
If none of these apply yet – you’re selling under your own name, earning a few hundred dollars a month, no business account – you can legally operate unregistered. But most side hustlers hit trigger #1 or #2 faster than they expect.
How Do You Register a Sole Proprietorship in Ontario Online?
You can register through the Ontario Business Registry, although the process can be confusing if you're registering a business for the first time.
That's why many entrepreneurs choose a trusted business registration service like Biz Ontario. We simplify the process by handling all required filings through one convenient package.
Biz Ontario provides incorporation and business registration services across Ontario, including:
- Ontario & Federal Corporations
- Sole Proprietorships
- Trade Name Registrations
- General Partnerships
- Professional Corporations
- Company Key Retrieval
- Annual Return Filings
- CRA Program Account Registrations
- Ongoing Business Compliance
Our specialists stay up to date with the latest regulatory requirements and filing procedures, giving business owners confidence throughout the registration process.
★★★★★ Customer Review
"I purchased the Ontario Corporation package and received great service that met my expectations. The process was smooth and handled efficiently. Overall, a reliable option for business services."
- Micheal Ronald
Step-by-Step Registration Process
-
Search Your Business Name
Use the Ontario Business Registry Name Search to check whether your proposed business name is already registered. While Ontario doesn't provide exclusive name rights for sole proprietorships, choosing a unique name helps avoid confusion. -
Create an Ontario.ca Account
Sign in or create your Ontario Business Registry profile to begin your application. -
Select "Register a Sole Proprietorship"
Choose the appropriate business structure from the available registration options. -
Enter Your Business Details
Provide your business name, address, business activity, and owner information. -
Pay the Government Filing Fee
Current Fee: $60
Payment can be made by debit or credit card. -
Receive Your Business Registration
Once approved, you'll receive your Master Business Licence and your 9-digit Ontario Business Identification Number (BIN).
⏱️ The entire registration process usually takes just 15–20 minutes if your business name search is available. Once approved, you can download your registration document immediately - there's no need to wait for mail delivery.
⚠️ Don't Miss This Important Requirement
Most business owners focus on registering their business - but forget about keeping their information up to date. Ontario requires you to update your Ontario Business Registry (OBR) within 15 days whenever your business details change, including your:
- 📍 Business Address
- 📞 Phone Number
- 💼 Business Activity
Many sole proprietors never update their OBR profile after registration, leaving outdated information on file for years. Set a calendar reminder today to stay compliant.
Ontario BIN vs. CRA Business Number: What’s the Difference?
This trips up almost every new sole proprietor, so it’s worth a direct comparison.
| Ontario BIN | CRA Business Number (BN) | |
|---|---|---|
| Issued by | ServiceOntario (via OBR) | Canada Revenue Agency |
| Purpose | Identifies your business name provincially | Identifies your business federally for tax accounts |
| Required for | Business name registration, provincial filings | GST/HST, payroll, corporate income tax, import/export |
| When you get it | Immediately upon OBR registration | Applied for separately, often after OBR registration |
| Format | 9 digits | 9 digits + program account letters (e.g., RT0001 for GST/HST) |
You will likely need both. The BIN proves your name is registered; the BN is what the CRA uses to track your tax obligations, including GST/HST once you cross the $30,000 threshold.
How Much Does It Cost to Register a Sole Proprietorship in Ontario?
The government fee is $60 CAD, covering a 5-year registration. That’s the cheapest structure available in Ontario – for comparison, provincial incorporation runs $300 and federal incorporation $200.
There’s no ongoing annual fee for a sole proprietorship. You’ll pay $60 again at renewal, five years out, and ServiceOntario sends a renewal notice roughly 90 days before expiry. If you use a paid filing service (like Biz Ontario or Online Business Registry ) instead of registering directly, expect an additional service fee on top of the $60 government charge – those services add convenience, not a lower government rate.
🥖 From Side Gig to Storefront: How Maya's Sourdough Went Legit
Maya had been selling handcrafted sourdough bread through Etsy and at local farmers' markets for almost a year. After a successful summer, a local grocery chain contacted her with an exciting opportunity.
Their first question was simple: "What's your business registration number?"
The Challenge
Maya had never officially registered her business. Without a Master Business Licence, no Business Identification Number (BIN), and no formal business registration, she couldn't complete the supplier onboarding process required by the grocery chain.
She called Biz Ontario that same afternoon.
How Biz Ontario Helped
- Confirmed her business name was available.
- Reviewed her existing Etsy sales history.
- Explained the correct registration process.
- Submitted her registration online.
- Delivered her Master Business Licence and Business Identification Number (BIN) the same day.
The Result
Within one week, Maya officially opened a dedicated business bank account and completed the grocery chain's supplier registration.
Less than six months later, her sourdough products were stocked in three grocery locations across the Greater Toronto Area. Her annual revenue exceeded the GST/HST registration threshold of $30,000.
💬 Maya's Advice
"I thought registration was paperwork I could deal with later. Turns out 'later' was the thing standing between me and the contract."
Sole Proprietorship vs. Incorporation: Which Fits Your Side Hustle?
Registering a sole proprietorship is the right call when you want speed and low cost, and you’re comfortable with personal liability. Incorporation makes more sense once liability exposure or tax planning starts to matter.
- Liability: Sole proprietors are personally on the hook for business debts and lawsuits; your house, car, and savings are exposed. Corporations create a separate legal entity that shields personal assets in most cases.
- Taxation: Sole proprietorship income is taxed at your personal rate, which can be simpler at low revenue but less efficient once you’re earning enough to benefit from the small business corporate tax rate.
- Setup cost and speed: $60 and same-day approval for a sole proprietorship, versus $300 and often a same-day-to-few-days turnaround for provincial incorporation, plus ongoing corporate compliance filings.
Most side hustles start as sole proprietorships and convert to a corporation once revenue or risk grows – there’s no penalty for switching later.
Frequently Asked Questions
Do I need to register a sole proprietorship if I only sell under my own name?
No. If you invoice, market, and operate strictly under your exact legal name - first and last name, no additions - Ontario does not require you to register with the OBR. The moment you add any word to that name (even a tagline like "Designs"), registration is required.
How long does Ontario sole proprietorship registration last?
Five years from the date of registration. ServiceOntario sends a renewal reminder about 90 days before expiry, and renewal costs the same $60 fee. If you let it lapse, there's no grace period - your name becomes available to other businesses.
Can I register a sole proprietorship in Ontario without a Canadian address?
You need a business address in Ontario to register through the OBR, even if you're not a Canadian resident. Non-resident entrepreneurs, including those coming through pathways like the OINP Entrepreneur Stream, still need to meet this requirement.
What happens if I don't register and I should have?
Operating an unregistered business name when registration was required is a violation of Ontario's Business Names Act. In practice, the more immediate problem is practical, not punitive: banks will refuse to open a business account, and you may not be able to secure business contracts or grants without proof of registration.
Is registering federally different from registering in Ontario?
Yes. Ontario Business Registry registration only establishes your business name provincially. If you plan to operate under the same name in other provinces, or want national name protection, that requires separate federal incorporation - a sole proprietorship registration in Ontario doesn't extend beyond the province.