CPTL is a library of Canadian payroll tax calculations available for licensing to payroll application software developers. It can be used to calculate payroll tax deductions required by Canada Revenue Agency (CRA) on all types of employment income, including regular salary & wages, pension income, bonuses, retroactive pay increases and commission income. CRA payroll tax deductions include Canada Pension Plan (CPP) contributions, Employment Insurance (IE) premiums, and Federal and Provincial/Territorial Income Tax withholdings (excluding Québec).
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