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.
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.
To view a PDF document you must have a PDF reader installed on your computer. Adobe reader is provided for download.
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. |
2.1 |
19 July 2007 |
2.0 |
03 Oct 2007 |
|
Generic Irmark techpack |
1.1 |
14 June 2004 |
You can download all the files below in compressed format (ZIP 2.6MB) or download the individual files you require from the following list:
Version |
Version date |
|
|---|---|---|
1.2.1 |
30 Sept 2003 |
|
1.0 |
17 Feb 2003 |
|
1.4.2 |
30 Sept 2003 |
|
1.4.2 |
30 Sept 2003 |
|
1.0 |
17 Feb 2003 |
|
1.1 |
30 Sept 2003 |
|
1.2 |
12 Jan 2004 |
|
1.1 |
8 Oct 2003 |
You can download all the files below in compressed format (ZIP 3.06 MB) or download the individual files you require from the following list:
Description |
Version number |
Version date |
|---|---|---|
1.11 |
17 Jul 2007 |
|
1.0 |
03 Oct 2007 |
|
1.9 |
27 Feb 2008 |
|
1.9 |
27 Feb 2008 |
|
1.1 |
11 Oct 2004 |
|
1.6 |
22 Aug 2007 |
|
CT600 Business Rules – Appendix B (MRR Validation) (PDF 103K) |
5.0 |
22 Aug 2007 |
1.2 |
27 Feb 2007 |
|
1.9 |
27 Feb 2008 |
|
1.0 |
6 April 2005 |
|
1.0 |
03 Oct 2007 |
Description |
Version number |
Version date |
|---|---|---|
1.8 |
2 Feb 2006 |
|
1.9 |
3 July 2006 |
|
1.12 |
27 April 2007 |
|
1.16 |
11 September 2007 |
You can download all the files below in compressed format (ZIP 7.9MB) or download the individual files you require from the following list:
Description |
Version Number |
Version Date |
|---|---|---|
Changes from v1-16 (2007-09-11) to v1-21 (2008-01-29) (TXT 63K) |
1.21 |
29 January 2008 |
| 1.21 |
29 January 2008 |
|
Notes to the Computation Tax XBRL Taxonomy and Stylesheet (PDF 68K) |
1.21 |
29 January 2008 |
| 1.21 |
29 January 2008 |
|
| 1.21 |
29 January 2008 |
|
| 1.21 |
29 January 2008 |
|
| 1.8 |
02 Feb 2006 |
|
1.21 |
29 January 2008 |
|
| 1.16 |
29 January 2008 |
|
| 1.21 |
29 January 2008 |
Please note that at this time although provision has been made in the schema to accept Accounts in XBRL, they are not supported in this release and should not be sent.
