Hours of service

Routine system maintenance

Due to system maintenance, some services will be temporarily unavailable on Sunday, September 26, 2021, from 6 am to 11 am ET (Eastern time).

View service maintenance details.

The CRA online services are available 21 hours a day. Due to daily maintenance activities, the services are not available for three hours a day from 3 am to 6 am (Eastern time).

The CRA online services may also be unavailable during the following maintenance schedule:

  • Friday, February 5, 2021 until Monday, February 8, 2021
  • Friday, May 14, 2021 until Monday, May 17, 2021
  • Friday, October 22, 2021 until Monday, October 25, 2021
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