RC4120 Employers’ Guide to Filing the T4 slip and Summary Guide Published

On October 30, 2023, the Canada Revenue Agency updated the RC4120 Employers’ Guide Filing the T4 slip and Summary.  This guide provides employers with the information to fill out the T4 slips for employees. 


The following have been added or updated: 


  • New Boxes 16A and 17A – Employees’ second C/QPP contributions For T4 slips filed for calendar year 2024 and after 

  • New Box 45 – Employer-offered dental benefits Do not use box 45 before January 2024 if you are filing electronically 

  • Web Access Code enhancement 

Was this article helpful?

0 out of 0 found this helpful

Have more questions? Submit a request