Small Business Tax Rates by Province in Canada 2025

Updated March 2025 • bremo.io

The small business deduction (SBD) is one of the most valuable tax breaks available to Canadian entrepreneurs. Canadian-Controlled Private Corporations (CCPCs) pay a dramatically reduced tax rate on the first $500,000 of active business income each year. The combined federal small business rate is 9%, and provinces add their own small business rate on top.

2025 Small Business Tax Rates by Province

Manitoba: Lowest Combined Small Business Rate

Surprisingly, Manitoba offers the lowest combined small business rate in Canada at just 9% — it has a 0% provincial small business rate, meaning only the 9% federal rate applies to the first $500,000. This is a significant advantage for small business owners in Manitoba.

Alberta and BC Tied at 11%

Both Alberta and BC have an 11% combined small business rate. Given Alberta's general corporate tax advantage, the two provinces are tied specifically for small business — though Alberta still wins on general corporate rates above the $500,000 threshold.

What Qualifies for the Small Business Deduction?

To claim the SBD:

• The corporation must be a Canadian-Controlled Private Corporation (CCPC)
• Income must be "active business income" earned in Canada
• The corporation (and associated corporations) must have taxable capital employed in Canada below $15 million (phased out between $10M–$15M)
• The corporation must have fewer than a certain number of hours of employee labour (new rules in some provinces)

Small Business Tax Planning

The low small business rate creates powerful tax deferral opportunities. Corporate income taxed at 11–12% can be retained in the corporation and invested, compounding at a much lower tax drag than personal income. The strategy of "leaving money in the corporation" is one of the most effective tax planning tools for Canadian business owners.

However, the 2018 passive income rules tightened this strategy: if a CCPC earns more than $50,000 in passive (investment) income per year, the small business limit begins to phase out — reducing or eliminating the SBD benefit.

Provincial Small Business Limit

Each province has its own small business limit (generally matching the $500,000 federal limit, though some provinces may differ). Always verify the current provincial limit with your accountant, as these amounts are occasionally adjusted.

Integrating Corporate and Personal Tax

Canada's tax system attempts "integration" — meaning that income earned through a corporation and then paid out as a dividend should face approximately the same total tax as income earned personally. In practice, the integration is not perfect, and the province you live in affects the optimal balance between retaining income in your corporation versus paying dividends.