T4 - no later than the last day of February following the calendar year to which the return applies.
RRSP -Generally you have up to 60 days into the new tax year to get your RRSP which applies to the previous year.
April 30 - Personal Tax Returns
June 15 - Self-employed individuals (if you owe, it must be paid by April 30).
We do not guarantee the accuracy of information presented here.