CRA Service interruptions due to system maintenance

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

These services will be temporarily unavailable from 11:00 p.m. on Friday, January 10, 2025, until 6:00 a.m. on Monday, January 13, 2025 (Eastern Time).

• EFILE for Individuals and Trusts (T3)
• Foreign reporting transmission web services, such as Forms T1134 and T1135
• ReFILE
• EFILE online service “Transmission History”
• Auto-fill my return and NOA via Tax Software services
• Client Data Enquiry
• Transmission web service for authorizing or cancelling a representative

Note: There will be no interruption of service to the following EFILE online services:

• Register for EFILE
• Yearly renewal
• Account maintenance