When Are T4 Due 2024. Previously, filers with 50 or fewer information returns could file by paper. Beginning january 1, 2024, businesses filing six or more information returns (slips and summaries) must file electronically.

According to the canada revenue agency (cra), for most people, the 2023 t4 filing due date is february 29, 2024. For your 2024 payroll deductions, we strongly recommend using our pdoc.