EFILE transmission service – Hours of operation

The EFILE and ReFILE services are open for transmission from February 19, 2024 at 8:30 a.m. (Eastern time), until January 24, 2025. You can electronically file your clients 2017, 2018, 2019, 2020, 2021, 2022, and 2023 initial personal income tax and benefit returns using the EFILE service and you can file your clients amended T1 returns for 2020, 2021, 2022, and 2023 using ReFILE.

The T3 EFILE service is open for transmission from February 19, 2024, at 8:30 a.m. (Eastern Time), until January 24, 2025. Visit the T3 EFILE information web page for more details on the services available this year.

The 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)

Hours of operation
Time zone Monday to Sunday
Pacific time 3:00 a.m. to midnight
Mountain time 4:00 a.m. to 1:00 a.m.
Central time 5:00 a.m. to 2:00 a.m.
Eastern time 6:00 a.m. to 3:00 a.m.
Atlantic time 7:00 a.m. to 4:00 a.m.
Newfoundland time 7:30 a.m. to 4:30 a.m.


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