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Use supplementary pages CT600D (2006) Version 2 if your company has been involved in Overseas Life Assurance Business (OLAB).
Use supplementary pages CT600J (2011) Version 2 if you are a party to any notifiable arrangements under S308, 309, 310 Finance Act 2004 (FA 2004).
Use form CT2 to provide a return of non-qualifying company distributions under S234(5) Income and Corporation Taxes Act 1988.
Use supplementary pages CT600G (2006) Version 2 if your company is claiming relief under the Corporate Venturing Scheme (CVS).
Use supplementary pages CT600F (2006) Version 2 if your company operates ships and is a party to a Tonnage Tax election.
Use supplementary pages CT600I (2012) Version 2 if your company carried on a ring fence trade for any period beginning on (or deemed to have begun on) 17 April 2002.
Use CT600 Budget Insert (2007) for an overview of the main Budget 2007 changes affecting Corporation Tax.
Use Collective Investment Schemes form CISC8 to apply for approval as an investment trust for accounting periods commencing 1 January 2012 or later.
Use form CISC5 for advance clearance if an Authorised Investment Fund meets the genuine diversity of ownership condition.
Use form CISC3 to apply to HMRC for distributing fund status for an offshore fund.
Use the Collective Investment Schemes form CISC6 to apply for entry into the Tax Elected Fund (TEF) regime if you're an Authorised Investment Fund (AIF).
Use Collective Investment Schemes form CISC7 for an Authorised Investment Fund (AIF) to give notice of entry into the Property Authorised Investment Funds (PAIF) regime.
Use form R105 (AIF3) where interest distribution to a non-resident is made to someone other than the trustees of an Authorised Investment Fund.
Use form R105 (AIF4) to declare that some or all of an interest distribution made to or received under a trust is income of the trustees.
Use form R105 (AIF2) to declare you hold shares as a personal representative of a deceased person, who solely owned the investment and was not a resident in the UK.
Tell HMRC if you're a promoter of notifiable arrangements to disclose an avoidance scheme.
Tell HMRC if you're a user of a scheme that has no promoter or is promoted by a lawyer who can't make a full notification.
Use form AAG5 if you need more room to report a tax avoidance scheme to HM Revenue and Customs (HMRC).
Use Collective Investment Schemes form CISC11 to apply for unauthorised unit trust exempt status to HMRC.
Use Collective Investment Schemes form CISC4 to apply for offshore fund clearance of genuine diversity ownership (GDO) and equivalence conditions.
Don’t include personal or financial information like your National Insurance number or credit card details.
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