EFILE transmission service – Hours of operation
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EFILE transmission service – Hours of operation
Upcoming Service Interruption
The Canada Revenue Agency (CRA) is advising external stakeholders of a planned service interruption.
This planned outage will affect a number of CRA's critical business applications and services, including those used by tax preparers.
Planned Outage Window
- Start: 3:00 a.m. Eastern Time (ET), Saturday, December 6, 2025
- End: 9:00 a.m. ET, Saturday, December 6, 2025
- Note: In case of postponement, work will be rescheduled for Saturday, December 13, 2025 from 3:00 a.m. to 9:00 am (ET).
During this time, the following services will be unavailable:
- EFILE for Individuals (T1)
- Corporation Internet Filing (T2)
- EFILE for Trusts (T3)
- Auto-fill my return (AFR)
- Client Data Enquiry
- Foreign reporting web services (e.g., T1134, T1135)
- Notice of assessment via Tax Software
- AgriStability/AgriInvest Corporation Forms submission service
- ReFILE service
- CRA email notifications
- T1 and T2 Special Elections and Returns web services
- EFILE online services: Register for EFILE, yearly renewal, and account maintenance.
Please plan your operations accordingly to minimize the impact of this interruption. While the CRA is working to reduce the risk of unplanned service delays, we encourage all stakeholders to complete critical transactions before the scheduled downtime, where possible.
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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2025-11-27