When beginning your NETFILE process, you will be met with a screen similar to this. If you choose to enter your NAC code, you may do so in the box provided, then click Continue.
Please note that this is an optional field, and does not need to be filled out in order for you to successfully NETFILE. However, should you choose to enter this code, it must match what the CRA has on file. After 5 unsuccessful attempts to enter this code, your account will become locked (for security purposes), and you will be given an error message with information to contact the CRA.
For more information, please see:
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