The T4 slip or “Statement of Remuneration Paid” summarizes the earnings paid to an employee over a calendar year. It also shows other specific amounts that an employee will use later for income tax purposes. There have also been revisions for the 2021 calendar year as boxes 57, 58, 59 and 60 are not used this year, but are still required for any 2020 T4 amendments. For information on completing and filing 2021 T4's please visit: https://www.canada.ca/en/revenue-agency/service