XBRL tagging: when, what and how to tag

Find out information about iXBRL data tagging and taxonomies with practical examples.



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.

Updates to this page

Published 5 November 2013
Last updated 20 February 2020 + show all updates
  1. Information about taxonomy minimum tagging lists has been added.

  2. First published.

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