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Software development for HMRC: detailed information

Guidance on APIs and how to find commercial software suppliers for different HMRC online services.

• From: HM Revenue & Customs
• Published: 5 February 2024

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Support for RESTful APIs

• Software development: APIs available on the HMRC Developer Hub
  • 3 May 2018
  • Guidance

Support for XML APIs and other resources

• Basic guide for XML software developers
  • 27 November 2013
  • Guidance
• Register as a Software Developer
  • 5 July 2022
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• Agent Authorisation Online support for software developers
  • 1 January 2013
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• Support for Alcohol and Tobacco Warehouse Declaration software developers
  • 1 January 2014
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• Automatic Exchange of Information schema and supporting documents
  • 24 May 2018
  • Guidance
• Charities repayment claims support for software developers
  • 1 January 2014
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• Construction Industry Scheme Online: support for software developers
  • 1 January 2014
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• Corporation Tax online: support for software developers
  • 1 January 2014
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• Excise Movement and Control System support for software developers
  • 1 January 2014
  • Collection
• PAYE Online support for software developers
  • 1 October 2025
  • Collection
• Technical specifications for the Pension Schemes Online service
  • 1 January 2014
  • Collection
• Real Time Information support for software developers
  • 7 August 2025
  • Collection
• Self Assessment online service for software developers
  • 20 January 2015
  • Collection
• Stamp Taxes Online - support for software developers
  • 1 January 2014
  • Collection
• EC Sales List Online: support for software developers
  • 1 January 2014
  • Collection
• Transaction Engine support for software developers
  • 1 January 2014
  • Collection
• Support for software developers on the HMRC IRmark
  • 1 June 2004
  • Collection
• HMRC service availability and issues
  • 4 August 2025
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HMRC recognition scheme

• Find commercial software developers
  • 18 March 2014
  • Collection
• Commercial software suppliers of record keeping applications
  • 7 November 2022
  • Guidance

Using artifical intelligence in commercial software products

• Guidelines for using generative artificial intelligence if you’re a software developer
  • 28 January 2026
  • Guidance

Published 5 February 2024