Chapter COM60040

Published date16 April 2016
Record NumberCOM60040
CourtHM Revenue & Customs
IssuerHM Revenue & Customs
The requirements

Since 1 April 2011, companies have had to file their company tax returns electronically for all APs ending on or after 1 April 2010 using HMRC CT Online Services. A company or agent must register with CT Online Services before they can file a return.

The accounts and computations elements of such returns must be filed in iXBRL, which is an IT standard designed specifically for business financial reporting.

Since 1 April 2011, CT and CT-related payments have to be made electronically. See COM60050 for more information.

These requirements also apply to overseas companies resident in the UK, and any non-resident company trading in the UK through a permanent establishment. From 6 April 2020, they also apply to non-resident companies receiving income from UK property

Any electronic return must include all the following:

  • form CT600
  • all supplementary pages that are required
  • the accounts and computations
  • any required elections.
Exemptions
  • Companies that are run entirely by individuals who are practising members of a religious society or order whose beliefs are incompatible with the use of electronic communications are not required to file online.
  • Insolvent companies within a formal administration or winding up procedure are excluded from the legal requirement to file online. However, solvent companies being wound up under a members’ voluntary liquidation are not excluded from online filing.
  • Unincorporated charities, clubs and societies can choose to file their accounts in either iXBRL or Portable Document Format (PDF) but they must still file their return online and submit any computations in iXBRL format.
  • We accept accounts from smaller charities in PDF format. This is because the accounting principles by which smaller charities prepare accounts mean that the accounts part of the HMRC free service (CATO) may not be available for them. A ‘smaller charity’ for this purpose is one where, together with any wholly owned subsidiaries, that is companies owned by the charity, the combined income does not exceed £6.5 million for the accounting period.
  • Any computation forming part of a charity’s company tax return must be in iXBRL format. However, no computation is required at all where the CT600E (Charities and Community Amateur Sports Clubs (CASCs)) supplementary page of the return is completed and confirms that all income and gains of the charity are exempt from tax and have been or will be applied for charitable purposes.
  • The group...

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