Sole Proprietorship

A sole proprietorship is not a separate legal entity — it is simply an individual carrying on business. There is no statute in Ontario that "creates" a sole proprietorship the way the OBCA creates a corporation. A person becomes a sole proprietor the moment they begin carrying on business for their own account.

Because the business and the owner are legally the same person, all contracts entered by the business are the owner's personal contracts, all property acquired for the business is the owner's personal property, and all debts incurred are the owner's personal debts.

This simplicity is both the main attraction and the primary risk of the sole proprietorship structure. It is the default structure for freelancers, independent contractors, trades people, and early-stage entrepreneurs who have not yet formalized their business.

An individual operating a sole proprietorship under their own legal name (e.g., "Jane Smith") is not required to register a business name. However, if the business operates under any name other than the owner's own legal name — including a name that adds a description, such as "Jane Smith Consulting" — registration is required under the Business Names Act, RSO 1990, c B.17 (BNA).

Under Section 2(2) of the BNA, an individual carrying on business in Ontario under a name other than their own name must register that name. Failure to register is an offence under Section 10 of the BNA, and an unregistered business name cannot be enforced in Ontario courts — meaning a sole proprietor who has not registered their business name cannot sue to collect a debt owed to the business under that name.

Registration process: Business name registrations for sole proprietorships are filed through the Ontario Business Registry (OBR) at a government fee of $60. The registration is valid for five years and must be renewed.

What is registered: The registration records the business name, the owner's name and address, and the nature of the business. It does not provide exclusive rights to the name — that requires a trademark registration with the Canadian Intellectual Property Office.

Master Business Licence (MBL): Upon registration, the province issues a Business Identification Number (BIN) and a Master Business Licence, which many banks require to open a business bank account.

The most significant legal consequence of the sole proprietorship structure is that the owner bears unlimited personal liability for all business debts and obligations. There is no corporate veil separating the owner's personal assets from business claims.

This means:

• If a customer sues the business for negligence or breach of contract, they are suing the owner personally
• If the business cannot pay a supplier, the supplier can seize the owner's personal bank accounts, real estate, and other assets
• Business debt does not stay "inside" the business — it attaches directly to the individual owner

Practical implications: A sole proprietor who operates a renovation business and causes property damage to a client's home can be sued personally. Their personal savings, investment accounts, RRSP (subject to provincial exemption rules), and real estate are all potentially at risk.

When does liability matter most? Liability risk is highest in businesses that deal with clients' property or health, businesses that carry significant accounts payable, businesses with employees (employer liability), and businesses in regulated industries. A graphic designer with minimal client interaction and no employees has a very different risk profile than a contractor with a $500,000 project and a crew of subcontractors.

Ontario Execution Act exemptions: The Execution Act, RSO 1990, c E.24, exempts certain personal property from seizure by creditors, including the tools of a trade (up to $11,300), a motor vehicle required for work (up to $5,650), and household furniture. These exemptions are modest and do not protect most significant assets.

Business income earned through a sole proprietorship is reported directly on the owner's personal income tax return (T1). The Canada Revenue Agency (CRA) requires sole proprietors to complete Form T2125 — Statement of Business or Professional Activities — which is filed as part of the T1 return.

On Form T2125, the sole proprietor reports:

• Gross business revenues
• Business expenses (advertising, vehicle, office, professional fees, supplies, home office expenses, etc.)
• Net business income (gross revenue minus eligible expenses)
• Capital cost allowance (CCA) on depreciable business assets

The net business income from T2125 flows onto Line 13500 of the T1, where it is taxed as personal income at the owner's applicable marginal rate.

HST obligations: Sole proprietors with annual revenues exceeding $30,000 in any single calendar quarter or in four consecutive calendar quarters must register for and collect HST under the Excise Tax Act (ETA). Many sole proprietors voluntarily register even before reaching this threshold to claim input tax credits (ITCs) on business expenses.

RRSP contribution room: Business income generates RRSP contribution room (18% of prior year's earned income, subject to annual limits), which is an advantage over corporate dividend income.

Payroll: If the sole proprietor hires employees, they must register for a payroll account with the CRA, withhold income tax, CPP, and EI from employee wages, and remit employer contributions.

Estimated taxes: Unlike an employer who withholds income tax from salary, a sole proprietor pays tax in quarterly instalments if their net tax owing is expected to exceed $3,000 in the current year (CRA instalment requirements under Section 156 of the ITA).

The decision to incorporate is driven by three primary factors: liability, tax deferral, and business objectives.

Liability threshold: Once a sole proprietor's business carries meaningful liability risk — through contracts with significant damages exposure, employees, physical operations, or professional practice — incorporation should be considered. The cost of incorporating is far lower than the cost of a single significant judgment against personal assets.

Tax deferral threshold: Incorporation becomes financially compelling once the owner is earning more than they need for personal living expenses. Earnings retained in a corporation are taxed at approximately 12.2% (SBD rate). Earnings withdrawn personally are taxed at the owner's marginal rate (up to 53.53% in Ontario). The deferral on amounts retained in the corporation accelerates wealth accumulation significantly over time.

As a rule of thumb, many accountants suggest incorporating when consistent annual net business income exceeds $100,000 — but the right threshold depends on individual circumstances, personal expenses, and risk profile.

Practical note on the conversion: When a sole proprietor incorporates, the business assets are typically transferred to the new corporation under a Section 85 election under the Income Tax Act, which allows the transfer at elected amounts to defer capital gains. This requires careful tax planning with an accountant and a lawyer.

Continuity: Existing contracts, leases, supplier relationships, and customer agreements may need to be assigned or novated to the new corporation. Permits and licences may need to be transferred or reapplied for in the corporation's name.

Sole proprietorships are the least expensive business structure to establish and maintain:

Start-up costs: - Business name registration (if operating under a name other than your own): $60 every 5 years - No incorporation fee - No legal fees for corporate documents

Ongoing costs: - Business name renewal: $60 every 5 years - HST filing (quarterly or annual) — typically prepared by an accountant - Personal tax return preparation including T2125 — typically $300-$800/year with an accountant - Business insurance (commercial general liability, professional liability — highly recommended)

Total first-year cost for a simple sole proprietorship: often under $1,000, compared to $1,500-$3,000+ to incorporate, plus $1,500-$3,000/year in ongoing corporate compliance.

The lower administrative burden is a genuine advantage for early-stage or low-revenue businesses. However, this cost comparison should always be weighed against the liability and tax cost of not incorporating.

Kwame is a freelance web developer in Ottawa. He earns $60,000 per year from various clients. He operates under the name "Kwame Digital" and has registered that name under the Business Names Act for $60.

As a sole proprietor, Kwame reports his $60,000 in revenue and deducts eligible business expenses (home office, software subscriptions, equipment, professional development) on Form T2125. His net business income of approximately $45,000 is taxed on his T1 at his marginal personal rate.

Kwame's liability exposure is moderate — his work is digital, not physical, and his contracts are with established businesses. His income does not significantly exceed his living expenses, so tax deferral through a corporation provides limited benefit at this stage.

If Kwame's income grows to $150,000 and he takes on larger contracts with performance obligations and financial consequences for errors, both the liability and the tax math begin to favour incorporation.