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 19, 2024)

1. How do I change the activation key used by Taxprep?
2. How do I register to the new ''support.cch.com/oss/canada'' Support Platform?
3. How do I attach files to my case on the ''support.cch.com/oss/canada'' Support Platform?
4. How to clear cache in Taxprep, Cantax and AliForm?
5. How do I designate a property as a principal residence for all years owned?
6. How do I update my support case on the ''support.cch.com/oss/canada'' Support Platform?
7. CRA EFILE ERROR 110-B: T1 return is rejected with error code 110-B for newcomers
8. CRA EFILE ERROR 16, how to fix it
9. How do I import data into a Taxprep tax return?
10. How to configure the EFILE identification in CCH iFirm Taxprep?
11. When do I file the designation of a principal residence (Form T2091)?
12. How to report foreign employment income in Cantax T1?
13. T1- How to adress the Efile error T815
14. How do I add new users in CCH iFirm?
15. How can I download old version of Cantax or Taxprep programs?
16. Cantax T1 - Where to enter the Medical Traveling expense, where to enter the mileage for travelling for medical reason
17. The federal T1 return is rejected by the CRA with error code 43.