Open this photo in gallery: Roughly 13 per cent of Canadians are self-employed, with a June 15 tax-filing deadline. The June 15 deadline for self-employed workers to file their income tax returns is approaching, and some clients may need a nudge to get their books in order on time. “People are either very organized and are on the ball, or they procrastinate and delay, delay, delay,” says Greg Loskutov, a chartered professional accountant (CPA) at Omega Squared Professional Corp. in Toronto.