Corporate Federal and Provincial Tax Rates in Canada

Corporate tax rates in Canada depend on several factors: the type of corporation, the province or territory where the business operates, the type of income earned, and whether the corporation qualifies for the small business deduction.

For a Canadian-controlled private corporation, commonly referred to as a CCPC, the difference between the general corporate tax rate and the reduced small business rate can be significant. This is why it is important to understand both the federal rules and the provincial rules that apply, especially in Québec, Alberta and other Canadian provinces. For a broader overview of how corporate tax filing works, see our corporate tax return in Canada guide.

The Federal Corporate Tax Rate

At the federal level, the general net corporate tax rate is generally 15%. For CCPCs that qualify for the small business deduction, the reduced federal rate is generally 9% on eligible active business income, up to the applicable business limit.

The federal business limit is generally $500,000 of active business income. However, this limit can be reduced or eliminated when an associated group of corporations exceeds certain taxable capital thresholds or earns too much passive investment income.

In practical terms, this means that a small corporation actively carrying on business in Canada may benefit from a much lower combined corporate tax rate on its first $500,000 of eligible active business income. However, the final result depends on the province, the type of income and the corporation’s eligibility under both federal and provincial rules.

Associated Corporations and Sharing the Business Limit

The business limit is not calculated separately for each corporation where there are associated corporations. When a CCPC is associated with one or more other CCPCs, the corporations in the group must share the business limit, generally $500,000 federally and in most provinces.

This rule prevents a corporate group from multiplying the small business deduction by operating through several corporations. For example, two associated corporations cannot each claim the small business deduction on $500,000 of eligible active business income. Instead, they must allocate one shared business limit between them, using the appropriate allocation forms filed with the corporate tax returns.

In Québec, the same concept applies when calculating the small business deduction. A corporation associated with at least one other CCPC must consider the allocation of the business limit and, where applicable, Québec’s specific rules, including the 5,500 remunerated hours requirement.

Combined Federal and Provincial Small Business Tax Rates

The following table provides a general overview of combined corporate tax rates for active business income eligible for the small business deduction, compared with the general combined corporate tax rate.

These rates should be used as a general reference only. When a rate change takes effect during a taxation year, proration may be required. Certain provinces also have special rules for manufacturing and processing income, investment income, associated corporations, and corporations carrying on business in more than one province.

Important Québec Rules

Québec has its own corporate tax system. Corporations with a permanent establishment in Québec generally have to file a Québec CO-17 corporate income tax return with Revenu Québec, in addition to the federal T2 return. For businesses reviewing their filing obligations, our guide on how to file a T2 and provincial corporate tax return in Canada explains how federal and provincial filings work together.

Québec’s general corporate income tax rate is 11.5%. Combined with the 15% federal general rate, this results in a general combined federal and Québec rate of 26.5%.

For CCPCs eligible for the small business deduction, Québec’s reduced provincial rate was generally 3.2%, producing a combined federal and Québec small business rate of 12.2% on eligible active business income.

However, Revenu Québec announced an increase to the small business deduction for taxation years beginning after April 29, 2026. As a result, the minimum tax rate applicable to income eligible for Québec’s small business deduction is reduced from 3.2% to 2.2%. Combined with the federal small business rate of 9%, the new combined federal and Québec rate becomes 11.2% for eligible corporations.

This is not a simple calendar-date reduction for every Québec corporation. The change applies to taxation years that begin after April 29, 2026. For example, a corporation with a fiscal year beginning on January 1, 2026 would generally not benefit from the new Québec rate for its 2026 taxation year, because that taxation year began before the effective date.

Québec’s 5,500 Remunerated Hours Requirement

Québec also has a specific condition that can affect access to the full provincial small business deduction. A corporation must generally meet the remunerated hours test or qualify under the special rules for primary and manufacturing sector corporations.

To meet the remunerated hours test, the corporation must generally have paid its employees for at least 5,500 hours during the current taxation year or, in certain cases, during the previous taxation year, taking associated corporations into account.

If the number of remunerated hours is between 5,000 and 5,500, the Québec small business deduction is reduced on a straight-line basis. If the number of hours does not exceed 5,000, the corporation may lose access to the Québec small business deduction, unless another special rule applies.

This is especially important for professional corporations, small service corporations, holding companies and businesses with limited payroll. A corporation may qualify for the 9% federal small business rate but fail to receive the full Québec reduced provincial rate if it does not meet Québec’s specific eligibility conditions.

Alberta: A Lower General Corporate Tax Rate

Alberta remains one of the most competitive provinces from a corporate tax perspective. Its general provincial corporate tax rate is 8%, resulting in a combined federal and Alberta general rate of 23%.

For eligible small businesses, Alberta’s provincial small business rate is 2%, resulting in a combined federal and Alberta small business rate of 11% on eligible active business income up to the business limit.

Like Québec, Alberta administers its own corporate income tax system. Corporations with a permanent establishment in Alberta must generally file an Alberta AT1 corporate income tax return in addition to their federal T2 return.

Why the Actual Corporate Tax Rate May Differ From the Table

Corporate tax rate tables are useful, but they do not always show the final rate that applies to a particular corporation. Several factors can change the result, including:

• allocation of income between provinces;
• sharing of the business limit among associated corporations;
• taxable capital employed in Canada;
• passive investment income earned by an associated group;
• investment income earned by a CCPC;
• personal services business income;
• manufacturing and processing rules;
• provincial or industry-specific tax credits.

A corporation carrying on business in more than one province must generally allocate its taxable income between the jurisdictions where it has a permanent establishment. As a result, the combined rate may be different from the rate that would apply to a corporation operating only in one province.

Tax Planning Considerations

Corporate tax rates are an important part of tax planning, but they should not be reviewed in isolation. A corporation benefiting from a reduced tax rate on active business income may still need to consider the future impact of dividends, salaries, bonuses, payroll taxes, instalments and the shareholder’s personal tax situation. For related planning topics, see our articles on salary vs dividends in Canada and corporate tax reduction strategies.

In Québec, the new reduction in the small business tax rate makes planning even more important for corporations with taxation years beginning after April 29, 2026. Corporations should review their eligibility for the small business deduction, the 5,500 remunerated hours requirement and the integration impact of non-eligible dividends.

Conclusion

Corporate tax rates in Canada vary significantly depending on the province, the type of income and the corporation’s eligibility for the small business deduction. For an eligible CCPC, the combined tax rate can be as low as 9% in certain jurisdictions, while the general combined rate can reach approximately 30% in other provinces.

For Québec corporations, the new reduction of the provincial small business rate from 3.2% to 2.2% for taxation years beginning after April 29, 2026 is a favourable measure. However, access to this lower rate remains conditional, including compliance with the 5,500 remunerated hours requirement or the special rules for primary and manufacturing sector corporations.

A personalized tax review remains necessary to confirm the applicable rate, eligibility for the small business deduction and the most appropriate tax planning strategy for the corporation and its shareholders.