Sole proprietor or corporation in Ontario? Compare 2026 taxes, startup costs, owner salary/dividends, HST, liability, filings and real examples.
You are starting a business in Toronto. Should you simply work under your own name or form a corporation? The answer depends on liability, administration, how much profit you keep and how you will pay yourself.
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What Is the Difference Between a Sole Proprietor and Corporation?
4. How is a sole proprietor taxed compared with a corporation?
5. Why retained earnings matter more than the headline tax rate
8. What happens to assets when an existing business incorporates?
What Is the Difference Between a Sole Proprietor and Corporation?
A sole proprietorship is a business owned personally by one individual. The business and owner are not separate legal persons. A corporation is a separate legal entity, with its own tax returns, records and legal obligations. Incorporating is not automatically the cheaper tax option.
Should Your Ontario Business Incorporate? Common Situations
Find the situation closest to yours below. The answer explains the usual starting point; the detailed rules and exceptions come later.
Your situation | What it means | What to do next |
You are testing a small side business | A sole proprietorship can be simpler to operate. | Compare setup and annual compliance costs. |
You are signing higher-risk contracts | A corporation may separate some business liabilities, but protection is not absolute. | Review insurance, guarantees and legal risks. |
You need all profits for living expenses | Corporate tax deferral may be limited when you withdraw everything. | Compare total business and personal tax. |
You plan to retain profits in the business | Incorporation may offer planning options if rules apply. | Model corporate tax, salary/dividends and costs. |
Example: Comparing Taxes When You Keep or Withdraw Profit
Two freelancers each earn $100,000 before paying themselves. One needs nearly all the money for household bills; the other will leave a large amount in the business to buy equipment. The benefit of incorporation may look very different even though their profits are identical.
How to Choose a Business Structure in Ontario
Step 1: List your business risks and whether clients need a corporation.
Step 2: Estimate annual profit and how much cash you will take home.
Step 3: Compare setup, bookkeeping, payroll and T2 filing costs.
Step 4: Review the combined tax and legal outcome before incorporating.
Business Structure Terms Explained Simply
Sole proprietor: Someone running a business personally, rather than through a separate corporation.
Limited liability: A legal separation that may protect owners in some situations but has exceptions.
Tax deferral: Paying part of the tax later rather than immediately; not always permanent tax savings.
More Incorporation Rules, Costs, Liability and Owner Tax
1. How does a sole proprietorship work in Ontario?
A sole proprietor is an individual who carries on a business personally. Revenue, deductible expenses and net income are generally reported on the individual's T1 income-tax return, often using T2125, Statement of Business or Professional Activities. The proprietor generally reports the business's income regardless of how much cash they actually transfer to themselves.
Example: Maya bills $135,000 for consulting and has $35,000 of legitimate business expenses. Ignoring other adjustments, her $100,000 net profit is generally part of her personal business income. Transferring only $50,000 from her business account to her personal account does not cut that business profit in half. An owner's draw is not an additional deductible salary expense paid to the sole proprietor.
This structure is often appropriate when you are testing a small business, work alone, have limited operating risk, and expect to use most of the earnings for personal living costs. But the owner generally remains personally responsible for business debts and liabilities, subject to the specific facts and legal rules. Adequate insurance and contracts may still be essential.
Do you always need to register a business name?
In Ontario, a sole proprietorship generally needs a business-name registration when operating under a name other than the proprietor's own legal name. Registration does not create a corporation or provide a blanket exclusive right to the name. Check Ontario's actual business registry requirements and renewals. Ontario: business structures.
2. What changes when you incorporate?
An incorporated business is a separate legal entity with its own legal existence, obligations, assets and debts. The corporation ordinarily maintains a separate bank account and bookkeeping, contracts in its own name, and files its own corporate tax return. You own shares in the corporation, rather than owning each corporate asset directly. The corporation must follow its articles, corporate records and director obligations.
This structure can make it easier to bring in co-owners or certain investors, and it can help segregate some business obligations from an individual's assets. However, someone may still be personally liable under a bank guarantee, contractual promise, professional negligence or statutory director-liability provisions. Incorporation should complement, not replace, insurance and sound business controls.
Provincial or federal incorporation?
You can incorporate provincially in Ontario or federally under the applicable corporate statute. The choice affects naming, corporate records and extra-provincial registration requirements, among other things. A federal corporation carrying on business in Ontario may still need provincial registration. “Federal” does not mean the company avoids Ontario tax when it has a taxable presence here.
3. What does it cost in 2026?
Ontario's current government fee schedule lists $60 for registering a sole proprietorship and $300 for provincial business-corporation incorporation. A named corporation can require a name search/report; using a numbered name changes that step. These are government registration amounts, not total set-up costs. Optional legal advice, share structure, accounting setup, minute book, insurance, banking and ongoing T2 filings can cost substantially more. Fees should be verified at the time of registration. Ontario: registration and corporate filing costs.
Consider annual maintenance costs: a corporation may need separate tax software or preparer work, financial statement preparation, bookkeeping, shareholder records, annual corporate filings, payroll slips when salary is paid, and HST returns if registered. Even a corporation with no revenue may have tax and corporate filing obligations. A sole proprietor still needs good books and records, but the administrative burden is often lower.
4. How is a sole proprietor taxed compared with a corporation?
Sole proprietor: net business income normally flows into the owner's personal tax calculation alongside employment, rental, pension and other income. Personal marginal tax rates rise as total taxable income rises. A self-employed person may also be responsible for both portions of applicable CPP contributions, subject to CRA and Service Canada rules.
Corporation: the corporation calculates and pays tax on its income. A shareholder may later pay personal tax when salary, dividends or certain other benefits are received. This is a two-level system, so comparing only a corporate rate with a personal tax bracket is misleading. Different types of income can face different corporate rates, and dividend tax credits and refundable-tax rules complicate the full calculation.
The small business deduction is not automatic
The federal preferential rate for eligible CCPC active business income is currently 9%, subject to applicable conditions and business limits. Ontario has its own small-business tax regime, and the CRA's 2026 updates report a lower Ontario rate change effective July 1, 2026. The combined rate for any particular corporation can depend on its tax-year dates and eligible income. The federal business limit is generally $500,000 before relevant reductions and allocation among associated corporations.
Passive investment income, taxable capital, related companies, personal services business status and other factors can affect the preferential rate. See CRA: corporation tax rates and CRA: 2026 Ontario corporate changes.
Important: A consultant who incorporates but works much like an employee for one payer may fall under the personal services business (PSB) rules. A PSB can be denied the small business deduction and general rate reduction and face tighter expense restrictions. Incorporation by itself does not make a work relationship truly independent. CRA: personal services business fact sheet.
5. Why retained earnings matter more than the headline tax rate
The main tax-planning attraction of a profitable eligible corporation is often tax deferral, not a magic permanent saving. If the owner leaves part of the after-corporate-tax profits in the company for future operations or investments, personal tax on distributions may arise later. If the owner needs every dollar for living expenses, the combined corporation-plus-shareholder tax can narrow or erase the apparent rate advantage after considering administration costs.
Scenario A: you use nearly all earnings personally
Suppose a solo professional has $120,000 of business profit before paying themselves and needs almost all of it for rent, family and debt service. Incorporating may add costs without retaining meaningful profits. Compare personal tax and CPP as a sole proprietor with the corporation's tax plus personal salary/dividend taxes, payroll administration and expected retirement benefits. Do not assume one structure wins without numbers.
Scenario B: you can leave substantial profits in the company
Another professional earns $250,000 before owner compensation and needs only $85,000 personally. After expenses and appropriate owner pay, there may be enough eligible profit to retain in the corporation. Deferral, cash reserves and growth plans may support incorporation. But investment income on retained surplus can have its own corporate tax and small-business-limit interactions. A personalized projection is still required.
Scenario C: income is low or irregular
A seasonal freelancer with $35,000 annual net business income, few assets and no staff may find incorporation cost-ineffective. If business risk is unusually high or a client contract requires a corporation, non-tax reasons may change the decision. The “income threshold at which everyone must incorporate” advertised online does not exist as a universal CRA rule.
6. Should the owner take salary or dividends?
An owner-manager can often choose eligible forms of compensation, each with different business and personal consequences.
Salary or bonus: generally deductible to the corporation when properly earned, reasonable, paid and recorded under the rules; it becomes employment income for the recipient. Payroll withholdings and T4 reporting can apply. Salary generally builds RRSP room and may generate CPP pensionable earnings, with corresponding contributions. The corporation must manage remittances and filing deadlines.
Dividends: paid from corporate after-tax profits and usually not deductible to the corporation. They are reported personally under dividend taxation rules; CPP contributions generally do not arise solely from receiving dividends, and dividends generally do not create RRSP contribution room. The correct corporate resolutions, accounting and T5 reporting matter. Eligible and non-eligible dividends are not interchangeable.
Shareholder loans and benefits: money withdrawn from the corporation without a valid salary, dividend or loan arrangement may create shareholder-benefit or shareholder-loan tax issues. A corporate bank account is not a second personal chequing account. Paying household expenses directly from corporate funds needs documentation and an appropriate tax treatment.
When could the best answer be a mix?
The right mix can depend on the owner's other income, future RRSP savings, CPP objectives, childcare or benefit calculations, spouse's income, business cash requirements and the tax year. Some owner-managers use salary to create contribution room and dividends for flexibility; others choose differently. Model both the corporate tax and the individual's tax over more than one year.
7. Does incorporation affect GST/HST registration?
Yes. A sole proprietorship and a new corporation are generally different legal persons for tax purposes. Creating a corporation does not automatically move your old sole-proprietor GST/HST account, contracts, registration status or elections to the new entity. Plan the transition date, invoices, sales, input tax credits, closing returns and business-number accounts. A business that crosses the $30,000 small-supplier threshold may need to register and charge tax under the applicable timing tests, regardless of whether it is incorporated. See our 2026 Ontario GST/HST registration guide.
Example: A sole proprietor had $45,000 of taxable sales and HST registration, then incorporates on September 1. The new company should not simply keep billing under the individual's old HST number. Identify which entity performed each sale, whose expenses support ITCs, and which registrations/elections apply to the actual legal supplier.
8. What happens to assets when an existing business incorporates?
Moving a business into a corporation is not just opening a new bank account. The proprietor might own inventory, equipment, goodwill, accounts receivable, leased property or real estate. A transfer can cause a taxable disposition or require careful use of a section 85 rollover election or another applicable provision to defer certain gains. Both asset purchase and share structures have tax and commercial considerations.
The appropriate transfer documents, valuations and elections depend on the facts; do not guess at fair market values or treat accounting book value as automatically acceptable tax cost.
Watch the GST/HST implications
Transfers of business assets may be subject to GST/HST unless an applicable election or specific rule applies. The purchaser and vendor need to meet the conditions and retain documentation. A section 85 income-tax election does not by itself settle every GST/HST question. A transfer of the whole business can raise different considerations than a sale of a single asset.
Existing contracts and bank accounts
Customer agreements, bank mandates, leases, permits, merchant accounts, insurance and employee contracts may need assignment or replacement. Keep documentation clear so income and HST are reported by the correct entity before and after the incorporation date.
9. Who is liable when the corporation cannot pay its tax?
Limited liability applies in important ways, but there are exceptions. Directors may face personal exposure for certain unremitted payroll withholdings or GST/HST, subject to the law's conditions and any applicable defences. A corporation's shareholder may also have personal liability for guarantees or other commitments they signed. Separate books, timely remittances, proper bank reconciliations and governance are practical risk controls—not merely paperwork for the accountant.
This is a reason to set aside collected HST and payroll deductions immediately rather than using those amounts as general operating cash. The tax belongs to a distinct remittance process even if it temporarily sits in the business bank account.
10. What records and returns will you file?
Sole proprietorship
Personal T1 income-tax return including the appropriate business/professional statement, typically T2125.
GST/HST returns if registered, and any applicable payroll or other program returns.
Receipts, reconciliations, invoices, asset purchases and business-use allocations.
Personal tax instalments if CRA's requirements apply.
Corporation
T2 corporate income tax return, even where filing obligations arise with little or no activity.
Separate financial records and year-end accounting; corporate annual return and other registry obligations as applicable.
GST/HST and payroll accounts, slips and remittances when applicable.
Corporate income-tax instalments when required and payment by the proper balance-due date.
Shareholder loan ledgers, dividend resolutions, payroll records, owner compensation documentation and share records.
Deadline difference: A corporate T2 is generally due six months after the corporation's tax year-end. Its tax payment is often due two months after year-end; certain eligible CCPCs may qualify for three months. Filing time and paying time are not the same. CRA: when to file the T2 and CRA: corporate balance due.
11. Pros and cons at a glance
A sole proprietorship may fit when
You are starting out or testing demand.
Business income is modest and most profits fund your household.
You work alone, have relatively simple operations and manageable liability exposure.
You want straightforward recordkeeping and fewer corporate-maintenance costs.
Incorporation may fit when
Profits are consistently large enough to leave material cash inside the business.
You plan to employ people, seek investors or operate with significant commercial contracts.
You need a separate legal entity for appropriate risk or ownership reasons.
You want a structured succession or eventual share-sale arrangement, understanding that specialized rules apply.
Neither list is a legal rule. A high-risk low-profit enterprise may benefit from incorporation for non-tax reasons; a high-income incorporated consultant may still encounter personal services business risk.
12. Frequently asked questions
Do I pay tax twice if I incorporate?
Corporate profits can be taxed first in the corporation and personal tax may arise when those after-tax earnings are paid to owners. Canadian tax rules provide mechanisms intended to integrate corporate and personal taxation, but the combined result varies with the income type, province, dates and compensation structure. It is wrong to add two headline rates without considering the tax base and dividend rules.
Can a sole proprietor hire employees?
Yes. Incorporation is not a prerequisite to having employees. Payroll obligations apply to employers based on their actual operations and employee status. Workers' compensation and provincial employment-law requirements can also apply.
Does a corporation automatically protect my house?
No. A personal bank guarantee, professional negligence, certain tax-remittance liabilities or improper actions can create exposure despite incorporation. Ask a lawyer and insurance adviser about your particular risk.
Should I put my spouse on the company's payroll?
Only where there is real work, an appropriate compensation arrangement and the usual documentation. Related-party compensation raises reasonableness and tax-planning considerations. Do not pay arbitrary amounts merely to reduce the family's tax.
Can I convert a sole proprietorship into a corporation tax-free?
Sometimes an eligible tax-deferred asset rollover may be available, but it requires specific conditions, elections, valuations and deadlines. It is not automatic; asset, GST/HST, payroll and commercial matters also need attention.
Is incorporation necessary to register for HST?
No. Sole proprietors may be required or permitted to register for GST/HST. The legal entity and sales rules determine the correct account and threshold tests.
13. Before deciding, calculate these seven numbers
1. Expected business profit before owner compensation for the next two years. 2. Amount your household must withdraw from the business for living costs. 3. Personal marginal tax exposure and RRSP/CPP goals. 4. Corporate tax on the types of income the company would actually earn. 5. Expected annual bookkeeping, corporate filing, legal and compliance costs. 6. Cash required for HST, payroll and income-tax instalments. 7. Capital, partners, risk and investment requirements over the next three to five years.
Compare scenarios rather than focusing on one tax rate. At Presyz, we can help Toronto business owners evaluate after-tax cash flow, set up bookkeeping and GST/HST reporting, and coordinate personal and corporate filing requirements. Start with your actual income, expenses and cash needs.
Related Presyz guides
Ontario GST/HST registration rules and the $30,000 threshold
Monthly bookkeeping checklist for Ontario self-employed professionals
Official sources and further reading
This guide is general educational information reviewed October 28, 2026. It is not a substitute for tax advice based on your circumstances or for legal advice on liability, incorporation and contracts. Check current rates and registry fees before acting.
General educational information, not individualized tax, legal or financial advice. Verify current CRA requirements.