Corporation Tax Online: Internet Service Technical Pack for Software Developers

Note. The pack contains documentation required to support the development of software for the online filing of Corporation Tax returns over the Internet from November 2009.

This pack is aimed at Software Developers only and not for businesses/corporations or Agents who may wish to use the service, Corporation Tax Online.

For information, the Agent Authorisation technical pack is now available. This contains documentation required to support the development of software for the online filing of Agent Authorisation requests over the Internet

The contents of this pack are frequently updated, please check the website regularly to ensure that you are working with the most up to date version.

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Generic Documents

Description

Version number

Version date

The Gateway Document Submission Protocol (PDF 624K) Describes the protocol for communicating with the Government Gateway. Any application wishing to submit eXtensible Markup Language (XML) to HMRC must comply with this protocol.

3.1


6 March 2008

How to use the technical pack (PDF 18K)

1.0

27 July 2009

How to use the test service (PDF 54K)

1.1

5 October 2009

CT Non-Form validation rules (PDF 66K)

1.0

27 July 2009

Generic IRmark technical pack This technical pack contains technical specification and examples of the generic IRmark

1.2


28 July 2008
Local Test Service (LTS) and LTS Update Manager (LTSUM)

Description

Local Test Service (LTS) and LTS Update Manager (LTSUM) These tools give you the facility to test your software for HMRC rules compliance within your own environment.
CT600

Description

Version number

Version date

Corporation Tax RIM artefacts v3.1 (ZIP 1.5MB)

3.1

28 September 2009

1.0

15 May 2009

CT RIM Artefacts changes between V1 and V3.1 (PDF 67K)

1.1

9 October 2009

CT valid sample

1.0

27 July 2009

Appendix A – Rates of Tax (PDF 48K)

1.8

18 August 2009

Appendix B – MRR Validation (PDF 102K)

5.2

13 August 2009

Appendix C – AIA and Supplementary Pages Calcs (PDF 65K)

2.0

18 August 2009

CT Specials and Exclusions (PDF 20K)

1.2

9 October 2009

CT Test data (PDF 338K)

1.2

14 October 2009
XBRL Generic

Description

Version date

25 Sept 2009

XBRL UK Technical Guidance (Opens new window)

N/A

Schema reference mapping document (PDF 12K)

14 Sept 2009

HMRC-CT-iXBRL-Samples-v3-0-20091021 (ZIP 1.2MB)

21 Oct 2009
Computations

Description

Version date

Test Service

Live Service

ct-comp-taxonomy-2008-10-07 (ZIP 500K)

07 Oct 2008

From April 2009

From Nov 2009

ct-comp-taxonomy-2009-07-03 (ZIP 507K)

03 July 2009

From Oct 2009

From Nov 2009

Valid XML with Computation (ZIP 5K)

04 Nov 2009

N/A

N/A

Computation Minimum tagging requirements (XLS 544K)

03 July 2009

N/A

N/A
Accounts

Description

Version date

Test service

Live service

UK GAAP 2008-01-15 (ZIP 687K)

15 Jan 2008

From April 2009

From Nov 2009

UK Common Data 2008-01-15 (ZIP 81K)

15 Jan 2008

From April 2009

From Nov 2009

Valid XML with Accounts (ZIP 20K)

04 Nov 2009

N/A

N/A

UK GAAP Minimum tagging requirements (XLS 154K)

15 Jan 2008

N/A

N/A

UK GAAP Minimum tagging requirements Presentation Linkbase (ZIP 46K)

15 Jan 2008

N/A

N/A

Further supporting documents will be added to the technical pack in due course.