CTM93140 | CTSA: the filing obligation: prescribed form of CT600
From HM Revenue & Customs · Company Taxation Manual
A return must include a properly completed form CT600 or an approved substitute version of it. A non-approved format is unacceptable.
HMRC, Substitute Forms Approval (CDIO) must approve substitute versions, see .
Companies and agents who need the official form or relevant supplementary pages can obtain them from the GOV.UK website.
The form CT600 contains specific sections and there are also supplementary return pages that certain companies may need to complete.
There are ten different supplementary return pages. Companies need to obtain and complete the following supplementary pages if they:
| Page number | Page content |
|---|---|
| CT600A | Are close and have made loans or advance arrangements to confer benefits during the return period to participators or associates of participators, who did not repay thoses loans or advances during the return period |
| CT600B | Held an interest of 25% in a foreign company controlled from the UK at any time in the accounting period. |
| CT600C | Are claiming or surrendering relief under the group or consortium relief provisions |
| CT600D | Are involved in Overseas Life Assurance Business |
| CT600E | Are a charity or Community Amateur Sports Club (CASC) that claims exemption from tax on all or any part of its income and gains |
| CT600F | Operate ships and are party to a Tonnage Tax election |
| CT600H | Make cross-border royalty payments |
| CT600I | Carry on a ring fence trade (usually oil extraction or exploitation of rights in the UK or UK Continental Shelf) |
| CT600J | Are party to any notifiable arrangements under FA2004/S308-310 set up to avoid tax |
| CT600K | Are chargeable to CT on restitution interest |
| CT600L | Are claiming Research & Development Expenditure Credit or R&D SME Payable Tax Credit |
| CT600M | Are claiming certain allowances relating to a Freeport tax site |
| CT600N | Are due to pay Residential Property Developer Tax |
| CT600P | Are claiming creative industries reliefs |