File payroll information returns (slips and summaries)
When and how to fill out, file, distribute information slips (for example, T4 and T4A) and amend slips, including how to prepare the summary.
Duplication of Information Slips
To avoid the duplication of information slips when filing or amending slips electronically, please do not attempt to file the same slip(s) more than once unless you receive confirmation that the submission was rejected.
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