Last Saturday! 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 27, 2024)

1. How do I register to the new ''support.cch.com/oss/canada'' Support Platform?
2. How do I enter American employment income received by a taxpayer resident of Canada in the W-2 form?
3. The federal T1 return is rejected by the CRA with error code 70127.
4. EFILE ERROR 110-B: T1 return is rejected with error code 110-B for newcomers
5. How do I update a local version of Cantax T1 or Cantax T2?
6. How to report foreign employment income in Cantax T1?
7. CCH iFirm Taxprep - FAQ – Electronic signature
8. How to proceed with Auto-Fill T1 return (AFR) in Cantax T1?
9. CRA EFILE ERROR 16, how to fix it
10. NEW EFILE 2023: Non-residents filing under section 116 and Emigrants can now be filed electronically with CRA.
11. How do I prepare an amended federal T1 return to transmit it electronically (EFILE)?
12. How to report foreign investment income in Cantax T1? T1-IN
13. The Québec TP1 return is rejected by Revenu Québec with error code TSTRUC.
14. The T1 tax return is rejected with the error code 93 in Cantax T1.
15. Can't see Cantax T1 dependant Drop-down box
16. When do I file the designation of a principal residence (Form T2091)?