CRA: Service Interruptions Due to System Maintenance

The Canada Revenue Agency’s (CRA) systems will be undergoing 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, May 9, 2025, until 6:00 a.m. on Monday, May 12, 2025 (Eastern Time):

• Corporation Internet Filing
• Corporation Foreign Reporting transmission web services, such as Forms T1134 and T1135
• Auto-fill my return and Express NOA services
• Client Data Enquiry
• Transmission web services for authorizing or cancelling a representative

The following services will be temporarily unavailable from 11:00 p.m. on Friday, May 9, 2025, until 2:00 p.m. on Saturday, May 10, 2025 (Eastern Time):

• EFILE for Individuals
• ReFILE
• AgriStability/AgriInvest Corporation forms transmission web service

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

• Register for EFILE
• Yearly renewal
• Account maintenance
• Transmission history