The options
A sole proprietorship is the simplest and cheapest: you are the business, and there is no legal separation between you and it. A partnership is similar with two or more owners — and in a general partnership, partners are typically personally liable for the partnership's obligations.
A corporation is a separate legal person that can own assets, sign contracts, and be sued in its own name. In the US, the LLC offers a popular middle path combining liability protection with flexible tax treatment. Canada does not have LLCs; businesses there incorporate federally or provincially instead.
Liability: the main reason to incorporate
With a corporation, business debts and claims generally stay with the company rather than reaching your personal assets. That protection is the single strongest argument for incorporating once a business has employees, premises, meaningful contracts, or debt.
It is not absolute. Directors can be personally liable for specific obligations — unpaid payroll taxes and certain employee entitlements are common examples — and, importantly, any personal guarantee you sign to a lender or landlord deliberately bypasses the protection entirely.
Tax and administration
Tax treatment differs meaningfully between structures and countries, and can change your after-tax income substantially. Corporations may allow income timing and access to certain small-business rates; they also bring filing obligations, separate books, and accounting cost.
The honest trade-off is protection and planning flexibility versus complexity and expense. For a very small side business, a sole proprietorship may genuinely be the right answer for now.
If you have co-owners, the agreement matters more than the structure
Incorporating with partners and no shareholder agreement is one of the most expensive mistakes in small business. The agreement should cover decision-making and deadlock, what happens if someone wants out, dies, or becomes disabled, how shares are valued, and restrictions on transferring them.
Investors will also expect a clean structure: a sensible share class setup, properly issued shares, and IP actually owned by the company rather than by a founder personally.
Frequently asked questions
- Does incorporating protect my personal assets?
- Generally yes — a corporation is a separate legal entity, so its liabilities usually stay with it. Exceptions exist for certain director liabilities, and any personal guarantee you sign puts your assets back at risk.
- Can I set up an LLC in Canada?
- No. LLCs are a US structure. Canadian businesses typically incorporate federally or provincially; partnerships and corporations are the main options.
- When should a sole proprietor incorporate?
- Common triggers are hiring employees, signing significant contracts or leases, taking on debt, rising liability risk, or reaching a profit level where the tax treatment starts to matter.
- Do I need a shareholder agreement from day one?
- If there is more than one owner, yes. It is far cheaper to agree how you will separate while everyone still gets along than to litigate it later.
- Who owns the IP in a startup?
- Not automatically the company. IP created by founders or contractors often needs to be formally assigned to the company — investors and acquirers check this closely.
This guide is general information, not legal advice. Laws, costs, and procedures vary by state, province, and your specific situation — speak with a qualified corporate law lawyer about your circumstances before acting.