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Taking Knowledge Library (KL) updates in the Corporation Tax Wizard

When a new ePack is released, installing the ePack will not update an existing CT600. It is recommended upgrading to the latest ePack release at your earliest convenience.

In order to affect the CT600, Knowledge Library (KL) updates will need to be taken.

Note: It is good practice to take a backup of your file before accepting any updates. For guidance on taking a backup please click here.


1. Right-click on the Help icon in the top right-hand corner of the Corp Tax Wizard.



2. Select Knowledge Library (KL) Updates etc, followed by REPLACE ALL Knowledge Libraries (KLs) in this document.

  • Related template: Corporation Tax
  • Software platform: Working Papers 2018, Working Papers 2019, Working Papers 2020, Working Papers 2021, Working Papers 2022