The CRA  Auto-File-Return (AFR), EFILE and ReFILE services are currently closed. These services re-open on Monday, February 22, 2021.

Please Note: The CRA shuts down these services every year from about mid January until the 3rd week in February to prepare for the current tax year.

TIP: I would recommend NOT logging in to the service on Monday, February 22. I always wait a few days. :)