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Available Downloads:
UK Patches

Alphatax / Alphalife UK Autumn 2016 v16.1.1.7 33.3MB 24 April 2017

Alphatag UK Summer 2017 v10.0.0.6 50.1MB 4 October 2017

Alphacat Caymans Tax Rule Update August 2017 v16.3.0.0 5.05MB 25 August 2017
Irish Patches

Alphatax IE Autumn 2017 v16.1.3 17.7MB 20 November 2017

Alphatag IE Summer 2016 v9.2 17.1MB 4 August 2016
RPI and Tax table - Files include RPI up to October 2017

The latest RPI table published by the Office for National Statistics is shown at the following link. To view HMRC's interest rate tables, click here.
Please select the tbl file relevant to your version of Alphatax

Alphatax UK Autumn 2016 v16.1 17kb 20 November 2017

Alphatax UK v16.2.1 2017 v16.2.1 17kb 20 November 2017
Alphatax Tax District file (TCSLCT.DST)

This list is based on the HMRC-compiled list of addresses for Businesses & Corporations and the Large Business Service (LBS) & Specialist Offices.
Click here to search for your Corporation Tax Office on the HMRC web site.

Tax District file 63kb 25 May 2016 May 2016
Things to note when downloading files:

Please note that the rpi (tcslct.tbl) and tax district (tcslct.dst) files downloaded from this page will need to be placed in the same location as Alphatax.

If DST files have already been associated with an application such as Notepad or Excel on your computer, the tcslct.dst file will be automatically opened in that application when you click on the hyperlink. If this is the case, we recommend that you close the file and then, at the hyperlink, click the right mouse button and choose Save Target As to save the file to the correct location.