Article Source: Canada Revenue Agency: Media room - Tax tip: Reminder
May 18, 2017
June 15, 2017 is the deadline for self-employed individuals to file their 2016 income tax and benefit return
If you are self-employed or the spouse or common-law partner of someone who is, the deadline to file your 2016 income tax and benefit return is midnight on June 15, 2017.
The legislated due date for any balance owing is April 30. However, since that date is a Sunday in 2017, the Canada Revenue Agency (CRA) will consider your payment to have been made on time if the CRA receives it, or it is postmarked, no later than midnight on May 1.
In addition to interest, a late-filing penalty may apply to returns received after the June 15 deadline.