A sole proprietor reports business income on a personal return, generally using Form T2125. A corporation is a separate legal entity and normally files its own T2 corporate income tax return. Neither structure automatically produces the lowest overall tax or eliminates personal risk. CRA: sole proprietorship; CRA: corporation.
Compare the two structures
| Question | Sole proprietor | Corporation |
|---|---|---|
| Legal identity | The owner and business do not have separate legal status. | The corporation can own property and enter contracts in its own name. |
| Reporting business income | Net income or loss is reported on the owner’s T1, usually using T2125. | Resident corporations generally file a separate T2 each tax year, including inactive corporations, subject to exceptions. |
| Personal exposure | Business risks can extend to the owner’s personal assets. | Shareholder limited liability has exceptions: a personal guarantee or certain director liabilities can create personal exposure. |
| Access to profits | Business profit is the proprietor’s income whether or not cash is withdrawn. | Corporate income and amounts paid to an owner are distinct; salary, dividends and other transactions have different rules. |
| Ongoing administration | Track revenue, expenses and any GST/HST obligations. | Maintain corporate records, separate financial statements and applicable corporate, payroll and sales-tax filings. |
Sources: CRA: sole proprietor, corporation, T2 filing.
What is Form T2125?
Form T2125, Statement of Business or Professional Activities, reports a sole proprietor’s business or professional revenue and expenses and calculates net income or loss for the personal T1. It asks for business identification, gross income, cost of goods sold where applicable, expenses and adjustments. It is not the corporation’s T2. Farming and fishing use different forms. CRA: self-employed guide.
For example, a consultant with $90,000 of revenue and $25,000 of eligible expenses has $65,000 of net business income before other adjustments. That amount enters the personal return; it is not the final tax bill. Other income, allowable deductions, credits and CPP or QPP can change the outcome. Keep contracts, invoices, receipts and records that substantiate the entries.
A sole proprietor can generally deduct reasonable current expenses incurred to earn income, but not their personal portion. Capital property is treated under capital cost allowance rules. An eligible GST/HST input tax credit reduces the expense amount on T2125, so the same tax is not deducted twice. CRA: T2125 expenses.
How do corporate tax and owner pay differ?
The corporation reports its income and expenses on its own T2. An owner who takes salary or dividends also has personal reporting consequences; salary may involve payroll withholding and pension contributions, while dividends follow different rules. The total result depends on the applicable corporate and personal tax rules, the amount retained, the way funds are paid out, and the owner’s other income. Compare both the business and personal sides over the same period before deciding. CRA: corporation.
A corporation may be a personal services business if the facts meet CRA’s conditions, with special income-tax rules. Incorporating a working arrangement does not automatically settle whether those rules apply. CRA: personal services business.
GST/HST applies to both structures
Sole proprietors and corporations can each have GST/HST registration and filing obligations. The ordinary small-supplier threshold generally considers relevant worldwide taxable supplies of the person and associates; assess the particular entity and its circumstances. A new corporation is a separate entity, so review registration, account details, contracts, invoice identity and any transfer of assets before the switch. Do not simply assume the sole proprietor’s GST/HST account covers the corporation. CRA: when to register.
Quebec has separate QST requirements; Revenu Québec generally administers GST/HST for businesses physically located in Quebec, with an exception for selected listed financial institutions. CRA: GST/HST general information.
Questions to take to an adviser
- How much profit must you withdraw for living costs, and how much might stay in the business?
- What are the setup, bookkeeping, annual return and payroll costs in your province?
- What contracts, assets, loans, licences and insurance need to change, and do any lenders require personal guarantees?
- Could personal services business rules or a transfer of existing assets affect the proposed structure?
- What GST/HST and provincial registrations, invoices and filing periods will each entity need?
There is no universal income level at which incorporation pays for itself. Compare realistic after-tax cash and ongoing costs, and obtain advice on your specific circumstances before transferring a business.
Sources checked October 16, 2026: CRA guides on T2125, corporations, registration and personal services businesses linked above.