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CRA Service Interruptions for Annual System Maintenance

Some Canada Revenue Agency systems will be undergoing annual maintenance. As a result, the following service interruptions will occur during the time frames noted below. 

  • Starting at 11:59 p.m. on Friday, January 30, 2026:
    • The T1 EFILE, ReFILE and T1134/T1135 web services will be unavailable until 8:30 a.m. on Monday, February 23, 2026 (Eastern Time).
    • The T3 EFILE and T1135 T3 web services will be unavailable until 8:30 a.m. on Monday, February 23, 2026 (Eastern Time).
    • The Pre-authorized debit web service will be unavailable until 6:00 a.m. on Monday, February 23, 2026 (Eastern Time).

  • Starting at 11:00 p.m. on Friday, February 6, 2026:

    • The Auto-fill my return service will be unavailable until 6:00 a.m. on Monday, February 9, 2026 (Eastern Time).
    • The NOA via Tax Software service will no longer be available.
    • The EFILE online service "Transmission History" will be unavailable until 8:30 a.m. on Monday, February 9, 2026 (Eastern Time).
    • The Special Elections and Returns web service will be unavailable until 6:00 a.m. on Monday, February 9, 2026 (Eastern Time).

Note: There will be no interruption of service to the following EFILE online services:  "Register for EFILE", "Yearly renewal" and "Account maintenance".

2026-01-27
Jocelyne