File your T4 slips with the CRA before the end of February each year.
You can file information returns over the internet only during the CRA hours of service.
When you file online, you don't need to file a T4 Summary.
Before you prepare T4 slips, enter your CRA transmitter number in your payroll settings.
Your transmitter number is a unique number provided to you by the CRA for electronic filing. It consists of MM followed by 6 digits. For example: MM555555
If you don't have a transmitter number yet, enter 555555. The CRA will send you a transmitter number to use for your next return.
Have your CRA payroll account number handy. You will enter it on the CRA website.
Your CRA payroll account number is made up of:
For example: 123456789 RP 0001
To file online, you will need a web access code from the CRA.
Your web access code consists of 2 letters and 4 numbers, and is case-sensitive. For example: 51s2B7
If you don't have a web access code yet, apply though the CRA WAC Online Service or call the CRA Helpdesk at 877.322.7849.
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