Collection

Corporation Tax forms

Find the Corporation Tax forms you need and any associated guides, notes, and supplementary pages.

• From: HM Revenue & Customs
• Published: 14 February 2007
• Last updated: 1 April 2021
  Show all updates

  1. 1 April 2021

     Added Corporation Tax for Company Tax Return document for 2021 to collection.

  2. 14 February 2007

     First published.

Starting up a company or organisation

• Corporation Tax: details of clubs, societies, voluntary associations and other similar bodies (CT41G (Clubs))
  • 4 April 2014
  • Form

Company Tax Return (CT600) forms and guidance

• Company Tax Return (CT600)
  • 1 April 2026
  • Form
• Corporation Tax: Company Tax Return (CT600 (2008) Version 2)
  • 4 April 2014
  • Form
• Corporation Tax: Short Company Tax Return (CT600 (Short) (2008) Version 2)
  • 4 April 2014
  • Form
• Company Tax Return obligations
  • 1 June 2026
  • Guidance
• Completing your Company Tax Return
  • 2 June 2026
  • Guidance

Company Tax Return (CT600) supplementary pages forms and guidance

• Corporation Tax: close company loans and arrangements to confer benefits on participators (CT600A)
  • 6 April 2026
  • Form
• Completing the CT600A page for close company loans and arrangements to confer benefits on participators
  • 8 April 2026
  • Guidance
• Corporation Tax: controlled foreign companies, foreign permanent establishment exemptions, hybrid and other mismatches (CT600B)
  • 1 April 2025
  • Form
• Completing the CT600B page for controlled foreign companies and foreign permanent establishment exemptions, hybrid and other mismatches
  • 2 January 2024
  • Guidance
• Corporation Tax: group and consortium relief (CT600C)
  • 1 April 2025
  • Form
• Completing the CT600C page for group and consortium relief
  • 2 January 2024
  • Guidance
• Corporation Tax: insurance (CT600D)
  • 1 April 2025
  • Form
• Completing the CT600D page for insurance
  • 2 January 2024
  • Guidance
• Corporation Tax: charity and Community Amateur Sports Clubs (CT600E)
  • 6 April 2026
  • Form
• Completing the CT600E page for charities and community amateur sports clubs
  • 6 April 2026
  • Guidance
• Corporation Tax: Tonnage Tax (CT600F)
  • 1 April 2025
  • Form
• Completing the CT600F page for Tonnage Tax
  • 1 April 2025
  • Guidance
• Corporation Tax: cross-border royalties (CT600H)
  • 1 April 2025
  • Form
• Completing the CT600H page for cross-border royalties
  • 2 January 2024
  • Guidance
• Corporation Tax: supplementary charge in respect of ring fence trades (CT600I)
  • 1 April 2025
  • Form
• Completing the CT600I page for supplementary charge in respect of ring fence trades
  • 2 January 2024
  • Guidance
• Corporation Tax: disclosure of tax avoidance schemes (CT600J)
  • 1 April 2025
  • Form
• Completing the CT600J page for disclosure of tax avoidance schemes
  • 2 January 2024
  • Guidance
• Corporation Tax: Restitution Tax (CT600K)
  • 1 April 2025
  • Form
• Completing the CT600K page for Restitution Tax
  • 2 January 2024
  • Guidance
• Corporation Tax: research and development (CT600L)
  • 6 April 2026
  • Form
• Completing the CT600L page for research and development
  • 6 April 2026
  • Guidance
• Corporation Tax: Freeports and Investment Zones (CT600M)
  • 1 April 2025
  • Form
• Completing the CT600M page for Freeports and Investment Zones
  • 16 April 2026
  • Guidance
• Corporation Tax: Residential Property Developer Tax (CT600N)
  • 1 April 2025
  • Form
• Completing the CT600N page for Residential Property Developer Tax
  • 12 February 2025
  • Guidance
• Corporation Tax: creative industries (CT600P)
  • 17 April 2026
  • Form
• Completing the CT600P page for creative industries reliefs
  • 1 July 2026
  • Guidance

Return of Income Tax on company payments

• Corporation Tax: return of Income Tax on company payments (CT61)
  • 13 February 2026
  • Form

Return for non-qualifying company distributions

• Corporation Tax: non-qualifying company distributions (CT2)
  • 5 September 2014
  • Form

Return of stock dividends

• Corporation Tax: return of stock dividends (CT101)
  • 5 September 2014
  • Form

Research and Development tax relief

• Check if you can apply for advance assurance for your Research and Development (R&D) tax relief claim
  • 18 May 2026
  • Guidance

Notes to paper forms

• Corporation Tax: penalty determinations (CT211 Notes)
  • 1 April 2026
  • Guidance
• Corporation Tax: assessments (CT220 Notes)
  • 12 August 2016
  • Guidance
• Corporation Tax: CT620 Notes
  • 12 August 2016
  • Guidance
• Corporation Tax: Group Payment Arrangements (CT630 and CT631 Notes)
  • 12 August 2016
  • Guidance