There are two versions of the HMRC CT600 form; the ‘v2’ version and the ‘v3’ version.
If your company accouting period starts on or before the 31st March 2015 then the ‘v2’ version must be used. Please purchase any of the 2015 Ftax Agent Company packages if you are an agent, or the Ftax Company 2015 if you are not. The ‘v2’ Ftax CT600 form file names will begin ‘CTRpre2015_’.
Otherwise the ‘v3’ version must be used, whatever the size of the company. Please purchase any of the latest Ftax Agent Company packages if you are an agent, or the Ftax Company if you are not.