One of the most common questions we hear from Ottawa business owners is: "Should I incorporate?" The honest answer is: it depends. Both structures have real advantages, and the right choice comes down to your income level, risk profile, and long-term plans. Here's a clear-eyed look at both sides.
Sole Proprietorship: Simple and Direct
A sole proprietorship is the default structure for anyone running a business in their own name (or under a registered trade name) in Ontario. There's no separate legal entity — you and the business are the same thing in the eyes of the law.
Advantages:
- Simple to set up — just register your business name with the province if needed
- Lower ongoing compliance costs — no corporate tax return, no minute book, no separate corporate filings
- Business losses can offset your personal income in the same year
- Straightforward banking and bookkeeping
Disadvantages:
- Unlimited personal liability — your personal assets (home, savings) are exposed to business creditors and lawsuits
- All business income is taxed at your personal marginal rate in the year it's earned — no ability to defer or split income
- Can be harder to bring in investors or sell the business
Incorporation: The Canadian-Controlled Private Corporation (CCPC)
When you incorporate in Ontario, you create a separate legal entity — a corporation. The business has its own tax obligations, bank accounts, and legal identity. Most small business corporations in Canada qualify as Canadian-Controlled Private Corporations (CCPCs), which unlocks some significant tax advantages.
Advantages:
- Lower corporate tax rate: Active business income of a CCPC up to the small business limit ($500,000 federally) is taxed at approximately 12.2% in Ontario (combined federal + provincial), compared to personal marginal rates that can reach 53.53% at higher income levels.
- Tax deferral: Money left in the corporation is taxed at the lower corporate rate. You only pay personal tax when you draw funds out as salary or dividends. This deferral can be reinvested to grow the business faster.
- Limited liability: The corporation's debts and legal obligations are generally separate from your personal assets (note: personal guarantees and director liability are exceptions).
- Lifetime Capital Gains Exemption (LCGE): If you ever sell qualifying shares of your CCPC, you may be eligible to shelter up to $1,250,000 (2024 indexed amount) in capital gains from tax — a major estate-planning and exit-planning tool.
- Income splitting: With careful planning, dividends can be paid to a spouse or adult children who are shareholders, spreading income across family members at lower marginal rates (subject to TOSI — Tax on Split Income rules).
Disadvantages:
- Higher compliance costs: corporate T2 return, HST filings, payroll, minute book maintenance, and separate financial statements
- Losses stay inside the corporation — they can't directly offset your personal income
- More complex banking and recordkeeping requirements
- Professional fees to set up and maintain the structure
When Does It Make Sense to Incorporate?
There's no single income threshold, but in our experience working with Ottawa-area businesses, incorporation often starts to make financial sense when:
- Your net business income exceeds $80,000–$100,000 per year and you don't need to draw all of it personally
- You operate in a field with meaningful liability exposure (contractors, consultants, health professionals, IT services)
- You're planning to build retained earnings inside the business for future reinvestment
- You're thinking about selling the business eventually and want to preserve LCGE eligibility
- You want to bring in a business partner or investor
Below that income range, the tax savings from the lower corporate rate may not outweigh the additional compliance costs — typically $1,500–$2,500/year in additional accounting fees for a small incorporated business.
The Hybrid Approach
Many Ottawa professionals and consultants start as sole proprietors and incorporate when their income justifies it. There's no penalty for making the switch — you simply incorporate, open a corporate bank account, and begin operating through the corporation going forward. Assets and contracts can be transferred to the new corporation, though the tax implications of any transfer should be reviewed with a CPA first.
Talk to a CPA Before You Decide
The right structure depends on your specific numbers, your family situation, your industry, and your goals. A one-hour conversation with a CPA can give you a clear picture of what incorporation would actually save you — or whether it's worth waiting.
At CMP Accounting, we advise sole proprietors and incorporated businesses across Ottawa, Kanata, Stittsville, and Carleton Place on structure, tax planning, and compliance. We're happy to run the numbers with you.