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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 to add a licence or security role in CCH iFirm
  2. How do I update my support case on the ''support.cch.com/oss/canada'' Support Platform?
  3. How do I prepare an amended federal T1 return to transmit it electronically (EFILE)?
  4. The federal T1 return is rejected by the CRA with error code 43.
  5. Taxprep setting- Where to find the password for Taxprep Services
  6. How do I attach files to my 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. How do I complete the return of a taxpayer who left Canada during the year?
  9. How do I download Taxprep?
  10. How do I prepare a federal T1 return for a non-resident?
  11. How do I amend slips, RL slips, receipts or returns in Taxprep Forms?
  12. What income amount should I enter in the return of a taxpayer who is emigrant or immigrant in the year?
  13. Diagnostic QE118 or QE129 displays and prevents the Québec electronic transmission.
  14. Why would a Cantax file be read only?
  15. How to clear cache in Taxprep, Cantax and AliForm?

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Cantax AliForm CCH Accountants' Suite
Date: 2023-Dec.-4
Corporate Taxprep
System Requirements

To correctly execute the latest version of Corporate Taxprep, your computer system must have the following:

Processor

Dual Core processor (Quad Core processor is recommended)

Supported operating systems
  • Windows 10 (64-bit) except for Education and Home Editions*
  • Windows 11 (64-bit) except for Education and Home Editions*
  • Windows Server 2016
  • Windows Server 2019
  • Windows Server 2022
  • Remote Desktop Services in Windows Server 2016, 2019 and 2022
  • Citrix XenApp 7.2308
Note: Please note that custom scaling is not supported.
* For more information on the different Windows Editions, and their respective minimum requirements,
consult the Microsoft Web site:
Important: We strongly recommend that all customers enable the enhanced security measures available in Windows 10 or higher operating system, including SMB 3.0 encryption for data in transit. Since the configuration of SMB 3.0 is explicit, please consult this Microsoft article to proceed with its configuration.
RAM

A minimum of 4 GB of RAM is required.

Note: RAM requirements are highly dependent on the operating system used. Consult the documentation provided with your operating system for minimum and recommended RAM requirements.

Microsoft .Net Framework

Microsoft .Net 6.0.2 or higher is required.

Network File Systems
  • NTFS
  • FAT32
  • exFAT
Internet Connection