Opening a payroll program account
Calculating deductions: You have to calculate and withhold the Canada Pension Plan (CPP) contributions, employment insurance (EI) premiums, and income tax deductions based on the amounts you pay your employees. You also have to calculate your share of CPP and EI.
Remitting deductions: You have to remit the CPP contributions, EI premiums, and income tax you deducted, along with your share of CPP contributions and EI premiums.
Completing and filing information returns: You have to report the employees' income and deductions on the appropriate T4 or T4A slip.
During all this process you have to keep proper records.