Here are some important dates to remember: Feb 28, 2019 - This is the last day employers can mail T4 slips and institutions can mail T5's
March 1, 2019 - This is the last day you can contribute to your RRSP for the 2018 tax year
March 31, 2019 - This is the last day most institutions will send out T3 slips
May 1, 2019 - Filing Deadline!
June 15, 2019 - Filing due date for self-employed individuals. Don't forget, any balance owing is still due by April 30