Support Centre open every Saturday until April 27
The Support Centre will be open every Saturday from 10:00 a.m. to 5:00 p.m., ET, until April 27 to handle requests submitted by web tickets and live chats. Connect to our Support Platform to create a web ticket through our virtual assistant who will either offer you to submit your case or to chat live with an agent.

Release dates calendar
Please consult our product calendar for release dates of all our software.
NOTE: The release of AliForm 2024 v.2.0 has been cancelled. For more information on this cancellation, please contact Customer Service by creating a support ticket or by calling at 1-800-268-4522.

Most Consulted Articles in the Knowledge Base (as of April 22, 2024)

1. How do I reset my password on the ''support.cch.com/oss/canada'' Support Platform?
2. How do I register to the new ''support.cch.com/oss/canada'' Support Platform?
3. CRA EFILE ERROR 16, how to fix it
4. Error code 132 - Missing or Incomplete information when Efiling a T1 return.
5. Cantax T1 - How to prepare a T1adj Refile
6. T1A Request for Loss Carryback
7. How do I attach files to my case on the ''support.cch.com/oss/canada'' Support Platform?
8. How do I update my support case on the ''support.cch.com/oss/canada'' Support Platform?
9. How to clear cache in Taxprep, Cantax and AliForm?
10. CRA EFILE ERROR 110-B: T1 return is rejected with error code 110-B for newcomers
11. How to configure the EFILE identification in CCH iFirm Taxprep?
12. When do I file the designation of a principal residence (Form T2091)?
13. How do I prepare an amended federal T1 return to transmit it electronically (EFILE)?
14. The federal T1 return is rejected by the CRA with error code 43.