Corporate income tax: federal plus provincial
Every incorporated business pays income tax on its profits at two levels. The federal general rate is 15%, reduced to 9% on the first $500,000 of active business income for a Canadian-controlled private corporation claiming the small business deduction.
Each province adds its own rate on top, from as low as 0% on small business income in Manitoba to double digits at the general rate. Combined small business rates run roughly 9% to 12.2% depending on province, and combined general rates run about 23% to 31%. This is reported annually on the T2 return.