EFILE transmission service – Hours of operation
The EFILE and ReFILE services are open for transmission from February 24, 2025 at 8:30 a.m. (Eastern time), until January 30, 2026. You can electronically file your clients 2017, 2018, 2019, 2020, 2021, 2022, 2023, and 2024 initial personal income tax and benefit returns using the EFILE service and you can file your clients amended T1 returns for 2021, 2022, 2023, and 2024 using ReFILE.
The T3 EFILE service is open for transmission from February 24, 2025, at 8:30 a.m. (Eastern Time), until January 30, 2026. 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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