Skip to main content
Guidance

Stamp Duty Land Tax: technical specifications

Technical specifications for Stamp Tax Online software developers.

Updates to this page

From:
HM Revenue & Customs
Published:
1 January 2014
Last updated:
22 May 2025
Show all updates

  1. 'Business rules version 2.5a' has been removed and replaced with 'Business rules version 2.6a'. 'Response messages version 4.3a' has been removed and replaced with 'Response messages version 4.4a'. 'SDLT baseline schema: 6.2' has been removed and replaced with 'SDLT baseline schema: 6.3'.

  2. Business rules 2.4a has been removed and replaced with business rules version 2.5a. The Response messages version 4.2a has been replaced with response messages version 4.3a.

  3. Business rules 2.3a has been removed and replaced with Business rules version 2.4a. The Response messages version 4.1a has been replaced with Response messages version 4.2a.

  4. The Response messages version 4.0a have been replaced with Response messages version 4.1a. Business rules 2.2a has been removed and replaced with Business rules version 2.3a.

  5. Version 6.0 of the SDLT test case data attachment has been removed. It will now be provided upon request only.

  6. The Response messages version 3.1 have been replaced with Response messages version 4.0a.

  7. Business rules version 1.5 has been removed.

  8. Business rules 1.5 Addendum for First Time Buyers Relief has been removed and replaced with Business rules version 2.2a.

  9. SDLT recognition process version 1.2 has been removed and replaced with SDLT recognition instructions version 1.0.

  10. The 'Business rules 1.5 Addendum for First Time Buyers Relief' file has been added.

  11. Documents about Response messages version 3.0, Business Rules version 1.4 and SDLT baseline schema: 6.1 have been removed from the page.

  12. SDLT baseline schema: 6.1, Business rules version 1.5 and Response messages version 3.1 have been added.

  13. SDLT baseline schema: 6.1 has been updated.

  14. The latest versions of the Business rules, Response messages and SDLT baseline schema have been added.

  15. The latest version of the 'SDLT test case data’ file has been published.

  16. The latest version of the 'SDLT valid xml example’ file has been published.

  17. The latest version of the 'SDLT valid xml example version 1.6’ file has been published.

  18. The latest versions of the SDLT baseline Schema, business rules and response messages have been added.

  19. Latest versions of business rules, response messages, how to use the test service, GovTalkHeader/IRheader rules, SDLT recognition process have been published as well as deleting the SDLT additional information document version1.5.

  20. Latest versions of Business rules and Response messages published.

  21. Latest versions of Business rules and Response messages published.

  22. First published.

Documents

How to use the test services version 2.6

ODT, 28.5 KB

This file is in an OpenDocument format

This file may not be suitable for users of assistive technology.

Request an accessible format
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email different.format@hmrc.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use.

SDLT baseline schema: 6.3

XSD, 85.2 KB

This file may not be suitable for users of assistive technology.

Request an accessible format
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email different.format@hmrc.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use.

Business rules version 2.6a

ODT, 199 KB

This file is in an OpenDocument format

This file may not be suitable for users of assistive technology.

Request an accessible format
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email different.format@hmrc.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use.

Response messages version 4.4a

ODT, 52.1 KB

This file is in an OpenDocument format

This file may not be suitable for users of assistive technology.

Request an accessible format
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email different.format@hmrc.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use.

GovTalkHeader and IRheader business rules (version 1.4)

ODT, 40.6 KB

This file is in an OpenDocument format

This file may not be suitable for users of assistive technology.

Request an accessible format
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email different.format@hmrc.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use.

SDLT valid xml example

XML, 4.83 KB

This file may not be suitable for users of assistive technology.

Request an accessible format
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email different.format@hmrc.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use.

SDLT recognition instructions version 1.0

HTML

Details

Technical specifications for software developers working on the Stamp Tax Online service.

Sign up for emails or print this page

Related content