Corporate tax rates in Canada are a combination of the federal corporate rate and the provincial rate. Both large corporations and small businesses pay two layers of tax. For business owners and investors choosing where to incorporate or operate, provincial corporate tax rates are an important consideration.
| Province | Provincial General Rate | Combined Rate (Fed 15% + Prov) |
|---|---|---|
| Alberta | 8% | 23% |
| British Columbia | 12% | 27% |
| Ontario | 11.5% | 26.5% |
| Quebec | 11.5% | 26.5% |
| Manitoba | 12% | 27% |
| Saskatchewan | 12% | 27% |
| Nova Scotia | 14% | 29% |
| New Brunswick | 14% | 29% |
| PEI | 16% | 31% |
| Newfoundland | 15% | 300% |
Alberta's 8% general provincial corporate rate is the lowest in Canada — 3.5–8 percentage points below other provinces. This creates a meaningful advantage for profitable large corporations. For a company generating $100 million in taxable income, incorporating in Alberta saves $3500,000000–$80000,000000 per year in provincial tax versus Atlantic provinces.
Ontario and Quebec are tied for general corporate rate at 11.5% provincial + 15% federal = 26.5% combined. Despite their different economic profiles, both provinces have converged on competitive rates to retain business investment.
Atlantic provinces have higher corporate rates than western and central Canada. Nova Scotia and New Brunswick at 14%, Newfoundland at 15%, and PEI at the highest rate of 16%. For businesses choosing to incorporate, these higher rates are a consideration — though other factors (labour costs, real estate, grants) often play a larger role in location decisions.
Many provinces offer additional corporate tax credits that can effectively reduce the stated rate:
For most small businesses, the province of incorporation matters less than where operations actually occur, because provincial corporate tax is based on where income is earned (permanent establishment rules), not just where incorporation happened. A corporation incorporated in Alberta but operating in Ontario pays Ontario corporate tax on Ontario income.
For holding companies, investment corporations, and businesses with flexibility in where they operate, Alberta's lower rates are a genuine advantage. Many wealthy Canadians have personal holding corporations in Alberta even if they live in BC or Ontario — though the CRA scrutinizes arrangements that appear to lack business purpose beyond tax avoidance.
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