The specifications below may change frequently. Please visit this page regularly and check for details of changes.
On this page:
Techpack Change History
Details the changes made to the techpack so you can see at a glance what
has changed and when.
Gateway
document submission protocol version 3.1 (PDF 624K)
Version date 6 March 2008 all applications submitting Extensible Markup
Language must comply with this protocol to communicate via the Government
Gateway.
How to use the
test service version 1.2 (PDF 36K)
Version date 30 April 2010.
HMRC IRmark technical pack
Technical specifications and examples of the generic IRmark.
Corporation Tax Online Service Guidance
1.5 (PDF 69K)
Version date 17 April 2012. This guidance aims to cover areas that are
not included elsewhere within the CT tech pack. It has guidance relevant
to several different areas of the Corporation Tax online service including
but not limited to CT600, XBRL, iXBRL, Accounts, Computations, and the
HM Revenue & Customs (HMRC) online application. It also includes calculation
items which previously appeared in Appendix C.
Corporation Tax Online Service Validation
Rules 1.6 (PDF 184K)
Version date 19 April 2013. This document attempts to bring together all
the validations currently active in the CT service. It may be that other
documents go into further detail about specific validations, however,
at the very least they will be linked to from this document. The idea
is that if the validation is not in, or linked to from this document;
it is not in the online service.
Local Test Service (LTS) and LTS Update
Manager (LTSUM)
Use this tool to test your software against HMRC rules in your own environment.
Note that it does not have the capability to check iXBRL.
Corporation Tax RIM artefacts version 3.92 (ZIP 2.2MB)
Version date 7 January 2013
Currently in TPVS and LTS (Live April 2013)
CT600 valid sample - no attachments (XML 5K)
Version date 19 March 2012
CT600 valid sample - for inserting
iXBRL accounts attachments (XML 6K)
Version date 19 March 2012
CT600 valid sample - for inserting
iXBRL computations attachments (XML 6K)
Version date 19 March 2012
Appendix A
- rates of tax version 1.9 (PDF 56K)
Version date 26 May 2011
Appendix
B - MRR validation version 5.3 (PDF 104K)
Version date 2 May 2011
Appendix
C - AIA version 3 (PDF 57K)
Version date 3 Jan 2013
XBRL
UK technical guidance (Opens new window)
Link to XBRL UK which authors the UK GAAP and UK IFRS taxonomies providing
extensive information on XBRL and its use for financial reporting in the
UK
XBRL UK Preparers and Developers
Guide (PDF 574K)
Must read - XBRL UK Preparers and Developers guide
XBRL UK Detailed Tagging Information
Document (PDF 243K)
Must read - XBRL UK Detailed Tagging Information document
Schema reference mapping document (PDF
42K)
Must read - Version date 26 October 2012 - this document
contains the mappings you will need to use in your iXBRL instances for
the various taxonomies that HMRC.
XBRL tagging - content
entity identifiers (PDF 42K)
Version date 3 August 2010 contains details of the varying context identifiers
that should be used for the different company scenarios for example building
societies, charities.
HMRC inline XBRL style
guide (PDF 316K)
Must read - Version date 6 April 2011 the guidance in
this document must be adhered to in order for software to gain HMRC recognition.
Joint
filing validation checks (PDF 49K)
Must read - Version date 8 September 2011 extra validation
that will be present in the live service from October 2010.
Generic dimensions
validation (XLS 23K)
Must read - Version date 19 Aug 2010 a further breakdown
of the extra dimension validation done as part of validation rule number
15 in the above Joint Filing Validation Checks document.
Minimum tagging requirements
Version date 30 Sept 2011 links to the minimum tagging sets for the various
taxonomies.
Filing
Company Tax Returns online: the XBRL tagging requirement (PDF 23K)
An HMRC statement explaining that from April 2013 there will be no major
extension to the list of specified information which must have an XBRL
tag.
How to gain iXBRL recognition
(PDF 25K)
Must read - Version date 2 December 2010 developers must
read this document and provide the information requested before they start
the recognition process.
Computations
Taxonomy Archive (ZIP 2MB)
This archive contains versions of the computation taxonomy released pre
2012
ct-comp-taxonomy-v1-0-2012-07-16
(ZIP 764K)
Version date 16 July 2012
Valid XML with computation
(ZIP 5K)
Version date 4 November 2009
Computation 'How to do it'
samples (ZIP 12K)
Version date 20 August 2010
Computation scenarios (XBRL) (ZIP 7K)
Version date 9 August 2010
Corporation
Tax and Detailed Profit and Loss Taxonomy Distribution 2013 (ZIP 3.1MB)
Version 2
Contains the 2013 Computation taxonomy and the Detailed Profit and Loss
taxonomy. Also contains all the taxonomies that the Detailed Profit and
Loss is dependent on. All references are absolute.
Computations
Versioning Reports (ZIP 786K)
Contains a summary of the changes from v1 to v2 of the 2013 Computations
taxonomy, and a spreadsheet showing mapping from the 2012 to the 2013
taxonomy.
Test
Cases - Computations 2013 and Detailed Profit and Loss Version 2 (ZIP
13K)
Version date 19 March 2013
These test cases are intended to demonstrate the correct usage of the different
normative references and namespaces. There are also examples of how to use typed
and anonymous dimensions. These cases are not representative of real computations
or Detailed Profit and loss
UK
GAAP 2009-09-01 (includes common data taxonomy) (ZIP 1.5MB) (Opens new
window)
Taxonomy files updated with minor additions to HMRC minimum tagging list.
For more info, see taxonomy changes file in the release zip.
Version date 31 December 2010
UK
IFRS taxonomy (ZIP 2.8MB) (Opens new window)
Taxonomy files updated with minor additions to HMRC minimum tagging list.
For more info, see taxonomy changes file in the release zip.
Version date 31 July 2010
UK
Charities 2009-09-01 (ZIP 1.5MB) (Opens new window)
Taxonomy files updated with minor additions to HMRC minimum tagging list.
For more info, see taxonomy changes file in the release zip.
Version date 31 December 2010
UK IFRS 'how to do it' samples
(ZIP 180K)
Version date 20 December 2010
UK GAAP 'how to do it' samples
(ZIP 80K)
Version date 20 August 2010
Valid XML with accounts
(ZIP 19K)
Version date 9 August 2010
