Canada Pension Plan (CPP) and Quebec Pension Plan (QPP) contribution rates
Who has to pay CPP or QPP contributions?
CPP contributions where no tax return filed within 4 years - self-employed
Recovery (by an employer) of overpayments of CPP contributions or EI premiums
How do I (an employee) get back overpaid CPP, QPP or EI premiums?
Canada Pension Plan retirement and other benefits
CPP retirement pension revised rules
Quebec Pension Plan (QPP) on Quebec Pension Board website
Employment Insurance (EI) premium rates and Quebec EI Rates
Quebec Parental Insurance Plan (QPIP)
Don't pay unnecessary employment insurance (EI) premiums
Recovery (by an employer) of overpayments of CPP contributions or EI premiums
How do I (an employee) get back overpaid CPP, QPP or EI premiums?
Employers may qualify for reduced EI rates