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 24, 2024)

1. CRA EFILE ERROR 110-B: T1 return is rejected with error code 110-B for newcomers
2. How do I prepare an amended federal T1 return to transmit it electronically (EFILE)?
3. How do I change the activation key used by Taxprep?
4. I cannot find any of the Québec forms and schedules in Taxprep.
5. How do I make sure that the refund of premiums (T4RSP slip, box 18) received following the death of the spouse is not taxed in the surviving taxpayer’s income tax return?
6. The Québec TP1 return is rejected by Revenu Québec with error code T3BAAS11.
7. Capital Losses of Other Years - How to use them?
8. How to clear cache in Taxprep, Cantax and AliForm?
9. Cantax T1 - Calculation of the foreign investment on a T5008, T5008 in US
10. How do I update my support case on the ''support.cch.com/oss/canada'' Support Platform?
11. How do I attach files to my case on the ''support.cch.com/oss/canada'' Support Platform?
12. CRA EFILE ERROR 16, how to fix it
13. The T1 EFILE status is Not eligible.
14. How to add a licence or security role in CCH iFirm
15. T1ADJ - ReFile what are amended return exclusions?