Chat with our virtual assistant
Hot topics - Week of March 30, 2025
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:
This week most consulted articles from our Knowledge Base
  1. Form T1198 Efile Diagnostic error #002025 (Cantax) or E779 (Taxprep-CCH Ifirm Taxprep)
  2. Forms - CRA Efile error - Account number given in the attached T619 electronic transmittal records does not match the account number you used to sign in
  3. Cannot log in to the ''support.cch.com/oss/canada'' Support Platform
  4. CRA FORMS: Can I transmit slips and T5013 returns using the federal transmitter number MM for 2023 and prior years?
  5. When will the next version of Taxprep, Cantax, or iFirm Taxprep be released?
  6. How do I register for the ''support.cch.com/oss/canada'' Support Platform?
  7. How to configure the EFILE identification in CCH iFirm Taxprep?
  8. When will changes in the capital gains inclusion rate be updated in the program?
  9. CCH iFirm Tax: How to send a return to Support

Products Support

Knowledge Base Video Library My support cases Latest News System Requirements
Date: 2021-July-20
Taxprep Forms
Troubleshooting Memos

2021-July-20 Versions
The maximum QPIP pensionable earnings and the maximum salaries and wages subject to the contribution related to labour standards are incorrect for 2021

2020 v.1.x
2020 v.2.0
2020 v.3.0
2020 v.4.0
2021-July-13
Forms T2012, T2054, T2055, T2057, T2058, T2059 and T2060 – The calculation of the number of months used to determine the late-filing penalty amount is incorrect

2020
2021-February-19
Form T1061 – Cannot EFILE the form because the telephone number was removed by mistake

2020 v.2.0
2021-February-11
English version of Form T1-OVP – The cells on line 1 of Part A are not in the right place for the months of January to October

2020 v.1.1
2020 v.2.0

To view the Taxprep Forms Troubleshooting Memo, consult the Knowledge Base.