Last day to transmit T1/T3 returns and T1135 forms for T1 and T3 is Friday, January 30.

The Canada Revenue Agency’s (CRA) T1 EFILE, ReFILE and T1135 web services will stop accepting transmissions of initial and amended T1 individual income tax and benefit returns and T1135 forms for T1 at 9:59 p.m. on Friday, January 30, 2026 (Mountain Time), in order to convert their systems for the next filing season. These services will re-open at 6:30 a.m. on Monday, February 23, 2026 (Mountain Time).

Please ensure to transmit any initial or amended T1 or T3 returns and T1135 forms by the respective dates to avoid having to wait until the new program starts.

The following services will still be available after January 30, 2026:

• Corporation Internet Filing for Corporation Income Tax (T2) returns, and T2 special elections and returns (Forms T217, T2 Schedule 89, T2054, T2057, T2058 and T2059). Note: You must have renewed your EFILE account, passed suitability screening and updated your tax preparation software with your newly assigned password to continue to file T2 returns and submit special elections and returns using your EFILE number and password after January 30, 2026. Go to the CRA page EFILE online number and password for more information.
• Electronic submission of T1 special elections and returns (Forms T217, T2057, T2059 and UHT2900). Note: You must use the most current version of the forms in the tax software to electronically submit requests through the special elections and returns web service until 9:00 p.m., on Friday, February 6, 2026 (Mountain Time). This service will re-open at 4:00 a.m. on Monday, February 9, 2026 (Mountain Time).