If you already know the basic difference between a sole proprietorship and an Ontario corporation and just want the trade-offs laid out plainly, this is that list. For the full breakdown of registration steps, fees, and how liability and taxation actually work, see our companion guide, “Ontario Corporation vs Sole Proprietorship: Which Is Right for You?”; this post focuses purely on weighing the pros and cons against each other.
Sole Proprietorship: Pros
Lower Cost to Start
Registering a business name (only required if you’re operating under a name other than your own) costs $60 and is valid for 5 years, well below a corporation’s $300 government filing fee.
Simpler Paperwork
There’s no separate corporate entity to set up, no Articles of Incorporation, and no ongoing annual corporate return to file.
Straightforward Taxes
Business income and expenses go directly onto your personal tax return (the T1); there’s no separate corporate return to prepare.
Full Control
As the sole owner, you make every decision without needing director resolutions, corporate formalities, or shareholder agreements.
Fast to Set Up
Business name registration is typically processed immediately when filed online, faster than incorporating.
Easy to Wind Down
Closing a sole proprietorship is generally simpler than dissolving a corporation, since there’s no separate legal entity to formally dissolve.
Sole Proprietorship: Cons
Unlimited Personal Liability
You and the business are legally the same entity; your personal assets, savings, home, and other property are potentially exposed to business debts and lawsuits.
No Real Name Protection
The Business Names Act specifically does not protect the exclusivity of a registered name, so someone else could register a similar name. A federal trademark is the appropriate tool for brand protection.
No Tax Deferral Option
All business income is taxed at your personal marginal rate in the year you earn it; there’s no ability to leave profits inside a lower-taxed entity.
Less Credibility With Some Partners
Some clients, lenders, and larger businesses prefer or require dealing with an incorporated entity.
Harder to Bring in Partners or Investors
A sole proprietorship structure doesn’t easily accommodate co-owners or outside investment the way share ownership does.
Registration Still Requires Upkeep
Changes to your address, business activity, or principal place of business must be reported within 15 days, and the registration itself must be renewed every 5 years.
Corporation: Pros
Limited Liability
The corporation is a separate legal entity, so generally its assets, not your personal assets, are at risk if the business incurs debts or is sued, provided normal corporate formalities are respected.
Tax Deferral
The corporation files its own return (the T2) and pays corporate tax rates; profits left inside the corporation aren’t taxed at your personal rate until they’re paid out to you.
Name Protection
Once incorporated, your corporate name is protected within Ontario in a way a sole proprietorship’s registered business name isn’t.
Continuity
A corporation’s existence continues independently of any single owner or director, which matters for succession planning or bringing in new owners.
Easier to Bring in Investors or Partners
Share structures make it more straightforward to divide ownership, add co-owners, or raise investment.
Perceived Credibility
Some clients, lenders, and partners simply prefer working with an incorporated business.
Corporation: Cons
Higher Upfront Cost
The government filing fee is $300, five times the $60 cost of a sole proprietorship business name registration.
More Paperwork to Maintain
Corporations must file an annual return and keep corporate records (minutes, resolutions, share and director registers) that a sole proprietorship doesn’t need.
Liability Protection Isn’t Absolute
Directors can still be personally liable in specific situations (for example, certain unpaid employee wages or unremitted source deductions), and lenders often require personal guarantees from small business owners regardless of the corporate structure.
More Complex Taxes
A separate corporate tax return (T2) is required in addition to your personal return, and structuring salary versus dividends to yourself adds a layer of tax planning a sole proprietorship doesn’t have.
More Effort to Wind Down
Dissolving a corporation is a more formal process than simply stopping operations as a sole proprietor.
What Doesn’t Change Either Way
Some obligations apply regardless of which structure you choose, so they’re not really a pro or con for either side:
GST/HST Registration
Both structures are subject to the same federal small supplier rule: if your taxable revenue is $30,000 or less over four consecutive calendar quarters, you’re not required to register for or charge GST/HST.
Real Trademark Protection
Neither a sole proprietorship’s business name registration nor a corporation’s name protection functions as a trademark; if brand protection specifically matters to you, that requires a separate application under the federal Trademarks Act. You may also want to run a NUANS name search before committing to any business name to confirm it isn’t already taken.
Quick Comparison
| Sole Proprietorship | Corporation | |
|---|---|---|
| Government fee | $60 | $300 |
| Personal liability | Unlimited | Generally limited |
| Tax return | Personal (T1) | Corporate (T2) |
| Tax deferral available | No | Yes |
| Ongoing filings | Renewal every 5 years | Annual return required |
| Name protection | None | Protected within Ontario |
Frequently Asked Questions
What’s the biggest advantage of a sole proprietorship over a corporation?
Cost and simplicity. Registration costs $60 versus a corporation’s $300 government fee, and there’s no separate corporate entity, annual return, or corporate tax return to maintain.
What’s the biggest advantage of a corporation over a sole proprietorship?
Limited liability. A corporation is a separate legal entity, so generally its assets, not your personal assets, are at risk for business debts, along with the ability to defer tax on profits left inside the company.
Is a sole proprietorship riskier than a corporation?
In terms of personal liability, yes. As a sole proprietor, you and the business are legally the same entity, so your personal assets can be exposed to business debts and lawsuits in a way a corporation’s structure is designed to prevent.
Does incorporating protect my business name better than a sole proprietorship?
Somewhat. A corporate name is protected within Ontario once incorporated, while a sole proprietorship’s registered business name isn’t protected from use by others under the Business Names Act. Neither one is a substitute for a federal trademark if brand protection is a priority.
Do I pay less tax as a sole proprietorship or a corporation?
It depends on how you use the profits, not which structure is inherently cheaper. A corporation allows tax deferral by leaving profits inside the company at corporate rates, while a sole proprietorship taxes all income at your personal rate immediately. Which is better depends on your income level and how much you need to withdraw personally.
Can I start as a sole proprietorship and incorporate later?
Yes. Many businesses start as a sole proprietorship for its lower cost and simplicity, then incorporate once liability exposure, revenue, or tax planning needs justify the added structure.
Ready to Move Forward?
Register an Ontario Sole Proprietorship with Corporation Ontario (Ontario Corporate Filing Center), or incorporate an Ontario Corporation if limited liability and tax deferral matter more to you.
Incorporate an Ontario Corporation