Understanding corporate tax rates and the advantages of federal vs provincial incorporation in Ontario is key for managing tax obligations. This guide covers small business tax rates, tax deferral opportunities, HST, payroll, and managing CRA accounts for Canadian small businesses.
Understanding Ontario Business Incorporation
Choosing the Right Business Structure: Sole Proprietorship vs. Corporation

When you start a business in Ontario, you have to pick a structure. Usually, people choose between a sole proprietorship and a corporation. Each one affects your taxes and legal obligations differently.
Advantages and Disadvantages of Each Structure
A sole proprietorship is easy to set up and run. But it doesn’t protect your personal assets if the business faces financial difficulties or lawsuits. On the other hand, a corporation is a separate legal entity. This means the owners, called shareholders, usually aren’t on the hook personally for business debts. However, corporations cost more to manage and follow stricter rules.
Aspect | Sole Proprietorship | Corporation |
---|---|---|
Liability Protection | None | Limited |
Tax Implications | Personal income tax rates | Corporate tax rates |
Continuity | Ends with owner’s death | Continues beyond ownership changes |
Liability Implications
Limited liability protection is a major advantage when you incorporate. The company is its own legal entity, and shareholders’ personal assets are typically protected from business debts.
Tax Implications Overview
In Ontario, corporations pay corporate income tax rates, which often differ from personal income taxes that sole proprietors pay. The rates for businesses can be lower on profits kept inside the company.
Advantages of Incorporating in Ontario
Incorporating in Ontario brings several benefits:
Limited Liability Protection:
Keeps your personal belongings safe from business-related issues.
Tax Benefits:
Corporations can get special tax breaks that might lower their tax obligations.
Credibility and Investor Appeal:
Registered corporations appear more serious to clients and investors than other business types.
Business Continuity Planning:
The company continues to operate even if owners change or pass away.
Key Tax Decisions for New Ontario Corporations
After you form your corporation, certain tax decisions need to be made, such as choosing the fiscal year-end date. This determines when your business closes its books and reports financial information.
CRA Registration
You must register with the Canada Revenue Agency (CRA), including:
- Getting a Business Number (BN) for all tax dealings
- Registering for corporate tax accounts
- Signing up for HST/GST if you sell taxable goods or services
- Setting up payroll deductions if you hire employees
Understanding Provincial vs. Federal Incorporation
- Provincial Incorporation is usually cheaper but limits your business to one province.
- Federal Incorporation allows you to operate across Canada but requires more paperwork and higher initial costs.
Ontario Corporate Tax Rates: General vs. Small Business
When starting a business in Ontario, knowing corporate tax rates helps plan finances better. Ontario corporate tax rates combine federal and provincial taxes.
- The general corporate tax rate is approximately 26.5% (15% federal + 11.5% provincial).
- Small businesses get a break with the Small Business Deduction (SBD), reducing the tax rate to approximately 12.2% for active income up to $500,000.
How Income Thresholds Work:
- Up to $500,000 in income: Small business tax rate applies.
- Above $500,000: General corporate tax rate applies.
Small Business Deduction Eligibility in Ontario
To qualify for the SBD:
- Your company must earn active business income (from regular operations, not investments).
- Your taxable capital used in Canada must be under specific limits.
If your taxable capital exceeds $10 million, the SBD benefits begin to phase out gradually.
Taxable Capital Threshold in Ontario
The taxable capital threshold determines how much your company’s assets affect eligibility for tax breaks like the SBD.
- Under $10 million: Full SBD benefits.
- Between $10 million and $15 million: Phase-out zone.
- Over $15 million: No SBD-related deductions.
Federal Corporate Tax Rates in Canada
Corporate tax rates include both federal and provincial taxes. For active business income:
- Federal tax rate: 15%.
- Ontario’s provincial tax rate: About 11.5%.
Federal Tax Implications for Investment Income and Capital Gains
Investment income, such as interest or dividends, faces higher taxes, sometimes up to 50%. Capital gains are taxed at an inclusion rate of 50%.
HST and Payroll Taxes for Ontario Corporations
When operating a corporation in Ontario:
- HST Registration: Required if sales exceed $30,000. Ontario’s HST rate is 13%.
- Payroll Taxes: If you hire employees, register for payroll deductions with CRA, including Canada Pension Plan (CPP), Employment Insurance (EI), and income tax.
Tax Deferral and Planning Strategies
Corporate Tax Deferral Opportunities in Ontario

By retaining earnings within the corporation, you can delay personal taxes until you withdraw money. This allows for lower taxes on retained earnings.
Income Splitting Strategies for Ontario Corporations
Income splitting helps lower total family tax bills by distributing income among family members who pay lower taxes. However, you must follow Tax on Split Income (TOSI) rules to avoid misuse.
Holding Company Benefits and Risks
A holding company can offer asset protection, tax advantages, and estate planning benefits, but it also introduces complexity and higher costs.
Tax Differences: Sole Proprietorships vs. Corporations
Sole proprietorships are simpler but come with higher tax rates and personal liability. Corporations benefit from lower tax rates and limited liability protection.
Filing Corporate Taxes in Ontario: Deadlines and Requirements
Corporations must file their T2 return every year with the CRA, and taxes owed must be paid within two months after the fiscal year-end.
Maintaining Accurate Tax Records
Maintaining accurate financial records is essential for meeting Ontario’s corporate tax requirements and simplifying audits.
Gondaliya CPA: Your Partner in Ontario Business Incorporation and Tax Planning
Starting a business in Ontario can be complex, but Gondaliya CPA offers professional assistance throughout the process—from CRA registration to tax planning and filing.
Frequently Asked Questions (FAQs)
What is a Canadian-controlled private corporation (CCPC) and why does it matter?
A CCPC is a private company controlled by Canadian residents, which qualifies for special tax benefits like the Small Business Deduction in Ontario.
How do corporate tax obligations in Ontario affect new corporations?
Ontario corporations must register with CRA, file annual returns, remit taxes on time, and comply with both federal and provincial tax rules.
What business tax deductions are available in Ontario for incorporated companies?
Deductions include business expenses, capital cost allowance, employee salaries, and certain corporate tax credits.
Are there corporate tax credits Ontario offers to new businesses?
Yes. Ontario provides tax credits such as the Ontario Innovation Tax Credit and research and development credits to qualifying corporations.
How does capital gains corporate tax work in Ontario?
Corporations pay tax on 50% of capital gains at corporate rates. Certain exemptions apply to qualifying assets.
What important decisions should new Ontario corporations make about taxes?
Key choices include selecting fiscal year-end, registering with CRA accounts, and planning dividend versus salary payments.
Why is a professional corporate tax accountant recommended for new corporations?
They help optimize tax savings, ensure compliance, manage complex filings, and avoid costly errors.
How can a corporation stay on top of its tax filing obligations in Ontario?
Using CRA’s online services and keeping accurate records helps meet deadlines and maintain compliance.
What causes the gradual elimination of the Small Business Deduction?
If taxable capital or income exceeds set thresholds ($10M+), SBD benefits reduce until fully phased out.
What is the combined tax rate for small businesses in Ontario?
Small businesses pay around 12.2% combined federal and provincial rate on active income under $500K.
Why choose incorporation despite higher administrative costs?
Incorporation offers liability protection, access to valuable incentives, and better tax planning opportunities.
What are common tax incentives for new corporations in Ontario?
Tax incentives include SBD, R&D credits, investment allowances, and provincial rebates.
What are typical shareholder tax considerations for incorporated businesses?
Deciding dividend vs salary payments affects personal income taxes and company expenses.
Additional Insights: Key Corporate Tax Topics for New Ontario Businesses
- Corporate vs Sole Proprietorship Tax:
Corporations pay lower taxes on active income but have more complex compliance than sole proprietors. - Corporate Income Tax Calculation:
Taxable income equals revenue minus allowable deductions per CRA rules. - Tax Planning for New Corporations:
Early planning helps maximize tax savings through deferrals and deductions. - Tax Savings Strategies Canada:
Using income splitting and holding companies can reduce overall family taxes. - Federal and Provincial Taxes:
Corporations must account for both federal rates (15%) and provincial rates (Ontario ~11.5%). - Corporate Tax Compliance:
Timely filings of T2 returns prevent penalties and interest charges. - Corporate Tax Registration Requirements:
Obtain business number from CRA; register HST/GST and payroll accounts if applicable. - Business Number CRA Importance:
This ID tracks all your corporate tax accounts efficiently. - Tax Thresholds for CCPC:
Income limits affect eligibility for lower small business rates and deductions. - Corporate Tax Return Deadlines:
File within six months after fiscal year-end; pay taxes within two months afterward. - Tax-Efficient Business Structure:
Incorporation aids in separating personal from business liabilities while optimizing taxes. - Corporate Tax Credits & Rebates Eligibility:
Credits depend on activities like innovation or training; keep records to claim them properly. - Passive Income Restrictions:
Passive income over $50K reduces SBD limits; plan investments carefully. - Income Tax Deferral Options:
Retain earnings inside corporation to postpone personal taxation on dividends or salary. - GST/HST Registration Obligations:
Mandatory registration if taxable sales exceed $30K; collect & remit 13% HST in Ontario. - Business Tax Registration Steps:
Register your corporation with relevant government agencies immediately after incorporation. - Incorporation Legal Requirements:
Follow legal formalities including name registration, minute books maintenance, and proper filings. - Corporate Governance Ontario Needs:
Maintain directors’ meetings minutes and financial reports annually to meet standards. - Tax Year Accounting Choices Impact:
Choosing fiscal year-end affects cash flow timing and reporting cycles. - Business Continuity & Liability Protection Benefits:
Incorporation ensures ongoing operations beyond ownership changes with limited shareholder risk. - Dividend vs Salary Taxation Implications:
Dividends have no payroll deductions but are taxable personally; salaries reduce corporate profits but require remittances. - Corporate Payroll Taxes Responsibilities:
Remit CPP, EI, withholding taxes accurately when employing staff. - Small Business Incorporation Benefits Summary:
Limited liability, lower combined taxes on active income, easier access to financing. - Capital Dividend Account Usage:
Allows tax-free dividend distribution from certain capital gains. - Corporate Tax Loss Carryforward & Carryback Provisions:
Losses can offset past or future profits to reduce taxes owed. - Tax Planning Consultation Services Value:
Professional advice helps tailor strategies to your company’s financial situation. - Avoid Errors & Late Submissions Risks:
Penalties add up quickly; use calendar reminders or accountants’ help. - Maintain Financial Records Compliance Periods:
Keep documents at least six years as per CRA rules. - Protect Your Profits Through Smart Structures:
Proper incorporation avoids personal asset risk. - Maximize Profitability by Claiming Deductions Fully:
Track all eligible expenses promptly. - Consulting a Lawyer & Corporate Tax Specialists Together Improves Outcomes
For detailed help with your incorporation setup or ongoing corporate taxation matters in Ontario, contact Gondaliya CPA today for tailored advice that fits your needs perfectly.

The information in this post is intended for general guidance only and should not be considered legal, tax, or financial advice. For personalized advice, please consult a qualified professional. Gondaliya CPA is not responsible for any actions taken based on the information provided.
Some links in this article may lead to third-party websites not managed by Gondaliya CPA. We are not liable for the accuracy or content of those external sites or any outcomes resulting from their use.
Gondaliya CPA – Corporate Tax Accountants serving Toronto and the Greater Toronto Area (GTA)
168 Simcoe St, Unit 1118, Toronto, ON M5H 4C9
Phone: 647-212-9559
Please click here to contact us by email or through our contact form.