Canada Corporate Income Tax Rates & SBD Guide 2026

1. How Canadian Corporate Income Tax Works

A corporation carrying on business in Canada can be subject to both federal and provincial or territorial corporate income tax. The federal tax system generally has a lower rate for qualifying active business income of Canadian-controlled private corporations (CCPCs) through the Small Business Deduction (SBD), while income that does not qualify for the preferential regime is generally subject to the federal general corporate rate. Provincial and territorial taxes are imposed in addition to federal tax, and the applicable rules vary by jurisdiction.

2. Federal Corporate Tax Rates and the Small Business Deduction

The federal Part I corporate tax system starts with a basic federal rate of 38%. After the federal tax abatement, the rate is 28%, and after the general tax reduction, the net federal general corporate tax rate is 15%. A qualifying CCPC claiming the Small Business Deduction can instead receive a federal net rate of 9% on qualifying active business income within its business limit.

3. 2026 Provincial & Territorial Corporate Tax Rates

Provincial and territorial corporate tax rates are added to the federal corporate tax. The following table summarizes the principal 2026 lower and higher corporate rates and the applicable provincial or territorial business limit. Where a rate changes during a taxation year, the calculation must generally be prorated based on the number of days each rate is in effect. Alberta and Quebec administer their corporate income taxes separately rather than under a CRA corporation-tax collection agreement.

4. Who Qualifies for the Federal Small Business Deduction?

The federal SBD is principally available to qualifying Canadian-controlled private corporations. A CCPC must satisfy the statutory definition, including being a private corporation resident in Canada and not being controlled directly or indirectly by one or more non-residents or public corporations or by combinations described in the Income Tax Act. The SBD applies to qualifying income, not automatically to every type of corporate income.

5. The $500,000 Federal Business Limit and Associated Corporations

The federal $500,000 small-business limit is not automatically available separately to every corporation in a corporate group. Associated CCPCs generally have to share or allocate the available business limit. A corporation can also assign all or part of its business limit to another associated CCPC where the statutory conditions permit.

6. Passive Investment Income Grind: $50,000 to $150,000

The federal SBD business limit is reduced when the CCPC and its associated corporations have combined adjusted aggregate investment income (AAII) in the relevant range. The federal reduction generally begins when combined AAII exceeds $50,000 and reaches a complete federal business-limit reduction when the relevant AAII reaches $150,000. The rule uses AAII as defined for tax purposes rather than a simple accounting total of every amount that a business owner may casually describe as passive income.

7. Taxable Capital Grind: $10 Million to $50 Million

The federal SBD business limit is also reduced when the combined taxable capital employed in Canada of a CCPC and its associated corporations exceeds $10 million. Under the current federal rules, the reduction is phased in over the range from $10 million to $50 million, with the business limit fully eliminated when taxable capital reaches $50 million.

8. Active Business Income vs Other Corporate Income

The 9% federal rate should not be presented as though it applies to all corporate income below $500,000. The SBD is designed for qualifying active business income. Income from a specified investment business and income from a personal services business generally do not qualify for the ordinary federal SBD, although the legislation contains specific exceptions and special rules.

9. 2026 T2 Filing Requirements and Deadlines

Most Canadian corporations must file a T2 Corporation Income Tax Return for every tax year even when no tax is payable. The filing deadline is generally within six months after the end of the corporation's tax year. The fiscal period cannot generally exceed 53 weeks. For tax years beginning after 2023, electronic T2 filing is generally mandatory, subject to CRA's listed exceptions.

10. 2026 Corporate Tax Planning Checklist

The headline 9% rate can be useful, but determining the corporation's actual tax cost requires looking beyond the headline rate. A corporation should evaluate the federal business limit, provincial business limit, associated corporations, AAII, taxable capital, income type, loss utilization, tax credits and the timing of transactions.

11. Important 2026 Takeaways

For most small Canadian CCPCs, the central federal figure remains a 9% rate on qualifying active business income within the available business limit, compared with a 15% general federal rate. But there is no single Canada-wide combined corporate rate. Provincial rates, business limits and eligibility conditions vary, and 2026 includes important rate changes in Ontario and Quebec. The federal $500,000 business limit can also be reduced or shared because of associated corporations, AAII and taxable capital.

Frequently Asked Questions