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 31, 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 31, 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)
| 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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