COM32001 - Background: features of COTAX: introduction

COTAX is the Company Tax computer system which was introduced on 10/11/1999 to handle the CTSA (CT Self Assessment) legislation enacted on 01/07/1999, and the previous CT Pay and File legislation.

Before the introduction of COTAX, CT was dealt with by the CTPF computer system which was introduced on 01/10/1993. Before that, CT was assessed using the CTA / CTC part of the IRIS computer system. The CTPF computer system was decommissioned when COTAX was introduced, and CTA / CTC was decommissioned in November 2010.

COSH (COTAX System Help) is available to guide you when using COTAX Functions.

This section of the COM deals only with specific points relating to the usage and specific features of COTAX.