The tax filing season officially opened on February 21 for e-filing 2021 returns, while February 28, 2022 will be the opening day for filing T3 returns electronically. The deadline for most Canadian filers is Monday, May 2 as April 30 falls on the weekend this year. As pros in the tax, accounting and financial services industries gear up for a busy season, there are other important tax filing and investment planning milestones to take note of, too. Here’s a handy checklist to share with your staff and clients: