The Canada Revenue Agency (CRA) encourages you to use its quick, easy, and secure electronic services to file your income tax and benefit return on time and pay any amount owing. Most Canadian income tax and benefit returns for 2015 are due on April 30, 2016. However, as this date is a Saturday, the CRA will consider your return as filed on time and your payment to be made on time if the CRA receives your submission or it is postmarked by midnight on May 2, 2016.
Self-employed individuals and their spouses or common-law partners have until June 15, 2016, to file their income tax and benefit returns, but any balance owing is still due no later than May 2, 2016.
Join the growing number of Canadians who are filing online. If you are fully registered for My Account and file online using certified tax preparation software, you may be able to use the new Auto-fill my return service to automatically fill in parts of your return, making the online filing process even simpler. It is important to file on time even if some slips or receipts are missing. And remember, filing a tax return is key to receiving benefits.
Source: Reminder – File and pay on or before the tax filing deadline to avoid any interest and penalties – Canada Revenue Agency