What's new for T1 Internet version 24.13?

The latest DT Max program update is now available for downloading. It features the fully functional T1/TP-1 program for the tax years 2009 to 2020 inclusively and fully supports T1/TP-1 EFILE. Installing this version will update your version of DT Max to 24.13.

Please note that all program versions are available on the Internet.

In this version...

DT Max T1

1. Quebec Tax Data Download
2. Known issues fixed in version 24.13
   1. EFILE ineligibility diagnostic
   2. Calculation of Quebec TP-1 return

DT Max T1

1. Quebec Tax Data Download

   The following change has been made to the Quebec Tax Data Download service:

   • Discarding of the amount in box O code RS of the RL-1 slip (RL-1) which is received from the Quebec Tax Data Download service with the amount in box O-5, O-6 or O-7.

2. Known issues fixed in version 24.13

   1. EFILE ineligibility diagnostic

      DT Max was erroneously generating an EFILE ineligibility diagnostic when a tax preparer authorized the CRA to contact them but then chose to have the taxpayer contacted for any pre- or post-assessment documents.

   2. Calculation of Quebec TP-1 return

      For a resident of Quebec with a return including Form T777S and data related to a donation, the program sometimes took a long time to perform the calculation.