Filing your return

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Services

• File your accounts and Company Tax Return

  The service to file your accounts and Company Tax Return has closed. There's a new way to do this.

• Accounts and tax returns for private limited companies

  Accounts for Companies House and Company Tax Returns for HMRC - what you must send, deadlines, filing separately or together

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Guidance and regulation

• Corporation Tax: penalties
  • Detailed guide
  • 1 January 2007
  • HM Revenue & Customs
• XBRL tagging: when, what and how to tag
  • Guidance
  • 20 February 2020
  • HM Revenue & Customs
• Help with imported hybrid mismatches — GfC16
  • Promotional
  • 17 December 2025
  • HM Revenue & Customs
• Company Tax Return taxonomies accepted by HMRC
  • Guidance
  • 18 February 2026
  • HM Revenue & Customs
• Reporting COVID-19 grants and support payments
  • Detailed guide
  • 16 September 2023
  • HM Revenue & Customs

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Policy papers and consultations

• Directions under regulation 3(3) to 3(6) of the Income and Corporation Taxes (Electronic Communications) Regulations 2003
  • 12 March 2026
  • HM Revenue & Customs
  • Policy paper
• Corporation Tax: increases to late filing penalties
  • 26 November 2025
  • HM Revenue & Customs
  • Policy paper
• Directions under regulation 3 of the Income and Corporation Tax (Electronic Communications) Regulations 2003 (S.I. 2003/282) and prescribing of electronic returns under sections 8(1H), 8A(1F) and 12AA(5E) of the Taxes Management Act 1970 (c. 9)
  • 7 June 2023
  • HM Revenue & Customs
  • Policy paper
• Corporation Tax: The Corporate Interest Restriction (Electronic Communications) Regulations 2022
  • 7 July 2022
  • HM Revenue & Customs
  • Policy paper

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Organisations

• HM Revenue
  & Customs
• Companies House