Final answer:
The method for calculating income taxes on commissions varies based on the province or territory and the type of commission (fixed or variable).
Step-by-step explanation:
The method for calculating income taxes on commissions varies according to several factors. One of the main factors is the province or territory in which the employee is located. Different provinces or territories may have different tax rates or rules when it comes to calculating income taxes on commissions. Another factor is the type of commission (fixed or variable) being earned. The calculation method may differ based on whether the commission is a fixed amount or varies based on performance.