Start Your Business the Right Way — With CPA-Certified Experts by Your Side

Launching a business in Ontario is one of the most rewarding decisions you will ever make. But the registration process choosing the right structure, filing the correct documents, setting up your CRA accounts can feel overwhelming without the right guidance. At Tax Square Professional Corporation, we have been helping entrepreneurs, newcomers, and growing businesses register successfully in Ontario and Toronto for over 15 years.

Whether you are a freelancer looking to register your first sole proprietorship, a professional ready to incorporate, or a startup team setting up a partnership our licensed CPAs handle everything from start to finish so you can focus on building your business.

📞 Call Us Today: 647-400-2709 | 📧 info@taxsquarepc.ca

Why Register Your Business in Ontario?

Ontario is the economic heartbeat of Canada. With more than 490,000 registered small businesses and a GDP that accounts for over 38% of the entire country’s output, this province offers entrepreneurs an unmatched environment to start, grow, and scale a business.

Toronto, Ontario’s capital and Canada’s largest city, is consistently ranked among the top cities in North America for startup activity, access to capital, and business diversity. From the tech corridor along King Street West to the professional services hubs in Mississauga and Markham  opportunity is everywhere in this province.

Here is why registering your business in Ontario makes sense in 2026:

• Ontario’s consumer market is the largest in Canada, with over 14 million residents
• The province offers small business corporate tax rates as low as 12.2% for incorporated businesses
• The Ontario Business Registry allows fast, online registration processed within 1 to 5 business days
• Federal and provincial startup grants are available to newly registered Ontario businesses
• A strong banking ecosystem makes it easier for registered businesses to access credit and financing
• Ontario’s legal framework protects incorporated businesses with limited liability provisions

Our Business Registration Services in Ontario & Toronto

Every business has different needs, and no two entrepreneurs are in the same situation. That is why Tax Square offers a full range of registration services tailored to your specific goals, industry, and growth plans.

Sole Proprietorship Registration Ontario

A sole proprietorship is the simplest and most affordable way to get your business off the ground in Ontario. You register your business name through the Ontario Business Registry, obtain your CRA Business Number, and you are ready to operate  often within a matter of days.

This structure is ideal for freelancers, consultants, tradespeople, and anyone testing a business idea before committing to a more complex structure. We handle the name registration, CRA setup, and HST account activation so the entire process is seamless for you.

Government fee: $60 CAD | Renewal required: Every 5 years

Partnership Registration Ontario

Going into business with one or more partners? A general partnership is a straightforward structure that allows two or more individuals to share profits, responsibilities, and liabilities. We register your partnership with the Ontario Business Registry and strongly recommend a professionally drafted partnership agreement to protect all parties involved.

For situations where one partner contributes capital but prefers not to be involved in daily operations, a limited partnership structure may be a better fit. Our team advises you on which option aligns with your arrangement and future plans.

Government fee: $60 CAD | Best for: Co-founders, family businesses, joint ventures

Ontario Corporation Registration (Provincial Incorporation)

Incorporating your business under the Ontario Business Corporations Act (OBCA) is the most powerful step you can take as a growing entrepreneur. Incorporation creates a separate legal entity  meaning your personal assets are protected from business debts and lawsuits, your business name is legally protected across Ontario, and you gain access to the small business corporate tax deduction.

We prepare and file your Articles of Incorporation, set up your corporate minute book, issue share certificates, and complete all required CRA registrations  all in one streamlined process.

Government fee: $300 CAD | Tax rate: 12.2% on first $500,000 active business income

Federal Incorporation — Canada-Wide Business Registration

If you plan to operate your business across multiple provinces or internationally, federal incorporation through Corporations Canada gives you national business name protection and unrestricted interprovincial mobility. A federally incorporated company can register in any province and is recognized throughout Canada.

This option is particularly popular with e-commerce businesses, technology companies, and service providers looking to expand beyond Ontario’s borders.

Government fee: $200 CAD online | Best for: National or international business expansion

CRA Business Number Registration

A Canada Revenue Agency Business Number (BN) is a 9-digit identifier that connects your business to all of your federal tax obligations. It is required for collecting and remitting GST/HST, running payroll, filing corporate income tax, and handling import/export transactions.

At Tax Square, we register your CRA Business Number and set up all necessary program accounts under a single appointment  including your GST/HST account, payroll deductions account, and corporate income tax account.

Professional Corporation Registration — Ontario

Are you a licensed physician, dentist, lawyer, accountant, engineer, or other regulated professional in Ontario? A Professional Corporation allows you to practice within your regulated field while benefiting from corporate tax rates, income splitting opportunities, and greater retirement planning flexibility.

Each regulatory body in Ontario  including the College of Physicians and Surgeons, the Law Society of Ontario, CPA Ontario, and Professional Engineers Ontario  has specific requirements for professional corporations. Our team is fully familiar with all of these requirements and ensures your registration is compliant from day one.

GST/HST Registration Ontario

Once your business earns more than $30,000 in annual revenue, GST/HST registration becomes mandatory under Canadian federal law. In Ontario, the harmonized sales tax (HST) rate is 13%. Businesses that register voluntarily before reaching this threshold can benefit from Input Tax Credits (ITCs)  allowing them to recover HST paid on business purchases.

We handle your GST/HST registration as part of our business setup service and advise you on how to properly track and remit HST to avoid CRA penalties.

Business Name Search & NUANS Report

Before incorporating federally, a Newly Upgraded Automated Name Search (NUANS) report is required to confirm that your proposed business name does not conflict with existing registered names or trademarks in Canada. We conduct thorough name searches and obtain your NUANS report quickly  typically within one business day.