NEW: Beginning March 24, 2025, the CRA will no longer accept direct deposit updates or changes submitted via EFILE
Consult this article for more details on this matter.

End of Phone Support: Benefit from our Advanced Virtual Agent 24/7!
Since January 1, 2025, the customer support teams offers its high-quality service exclusively through digital channels, and no longer offers incoming phone support. Click here for more details on this matter.
Register for our support platform and log in to our virtual agent to find answers, submit a support ticket or chat with a live agent.

Watch videos to find out everything you need to know about the support platform:

• How to Register With the Support Platform to Begin
• How to Open a Support Case or chat with a live agent
• How to Manage Your Support Cases: what happens after you submit a support case?
• How to Reset Your Support Platform Password

This week most consulted articles from our Knowledge Base

1. How do I register for the ''support.cch.com/oss/canada'' Support Platform?
2. Cannot log in to the ''support.cch.com/oss/canada'' Support Platform
3. How to clear browser cache in Chrome or Edge
4. CRA EFILE error code 2508
5. Form T1198 Efile Diagnostic error #002025 (Cantax) or E779 (Taxprep-CCH Ifirm Taxprep)
6. T1 - CRA EFILE ERROR 112-B: The information sent to the Canada Revenue Agency doesn’t match the information currently on record, which was provided by Service Canada.
7. How do I prepare an amended federal T1 return to transmit it electronically (EFILE)?
8. CCH iFirm Tax: How to send a return to Support
9. How to resolve the capital gain diagnostics E780, E1546 and E1547 concerning the periods when the slips do not provide the details?
10. T5008 from download not being picked up and not being transferred to schedule 3.