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HMRC iXBRL filing

iXBRL tagging conversion services

FinTags is an approved iXBRL solutions provider by HMRC.

For companies and accounting firms who are involved in reporting obligations to HMRC and Companies House, we offer one-stop solution for converting:

  • Corporation tax computation into iXBRL
  • Corporate tax return form (Form CT600) into XML

Since March 2011, HM Revenue and Customs in the UK has mandated all taxpayers to file their tax returns, including supporting financial statements, in iXBRL format. For your benefit, we have collated relevant information that you may seek related to HMRC Corporation Tax filing.

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XBRL Tagging

1. XBRL tagging: when, what and how to tag

Corporation Tax customers will have to file their Company Tax returns online, with accounts and computations in Inline eXtensible Business Reporting Language (iXBRL) format. Many customers will not need any knowledge of XBRL, or what needs to be tagged. If you use commercial software most of the XBRL tags will be inserted behind the scenes. But, if you need to know a bit more about XBRL tagging, then this document is for you. Read more

2. XBRL tagging requirement: filing Company Tax returns online

In his ‘Review of HM Revenue and Customs (HMRC) Online Services’ (March 2006), Lord Carter of Coles recommended that companies should be required to file their Company Tax Returns online using XBRL tagging in accounts and computations. The recommendation has been implemented with effect from 1 April 2011. Read more

3. XBRL guide for UK businesses

This guidance provides an introduction for UK businesses to the eXtensible Business Reporting Language (XBRL) data format and Inline XBRL (iXBRL), the standard form of presentation of business reports tagged in XBRL. Read more

4. XBRL tagging: context entity identifiers

From 1 April 2011, for any accounting period ending after 31 March 2010, Company Tax Returns must be filed online. Additionally, companies must file accounts and computations, which form part of the return, in Inline eXtensible Business Reporting Language (iXBRL) format. Read more

Taxonomies accepted by HMRC

Taxonomies are updated periodically to reflect changes to legislation, accounting standards and so on.Find out more about when you should use a particular version of a taxonomy in the attached guidance. Read more