RPI & Tax Tables



The latest RPI and Tax tables are updated to include the following.

RPI 239.4 inflation 4.8%

December 2011

(issued 17 January 2012)

Corporation Tax Rate 26%

for Financial Year beginning 1 April 2011

CTSA, from normal due date
late payment/overpayment rates 

29 September 2009

Other CTSA Interest rates 
QIPS late payment/overpayment rates

21 September 2009

RPI and Tax table (TCSLCT.TBL) 

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. 

Two versions of the tcslct.tbl file are available to download and it is important that you download the version that is appropriate for the Alphatax version you are using. To check your Alphatax version, run Alphatax and click on Help, About on the Menu bar.

Alphatax v 12.1 (Autumn 2011 Edition)

Users of Alphatax 12.1 only, click here to download the tbl file to the folder where you installed Alphatax. 

Alphatax v 12.0 (Spring 2011 Edition) or earlier

Users of Alphatax v12.0 (or earlier) should click here to download the tbl file to the folder where you installed Alphatax

Alphatax Tax District file

The latest list of Revenue Tax districts should be downloaded to the folder in which you installed Alphatax.

TCSLCT.DST - 61kb, 26/10/11

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 view the list on the HMRC web site.

Note. 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.