Guidance

Self Assessment technical specifications (2017): generic documents

Use this technical documentation for individual returns if you're a software developer working with the Self Assessment Online service.

• From: HM Revenue & Customs
• Published: 22 December 2016
• Last updated: 16 January 2018 — See all updates

Documents

Transaction Engine: Support for software developers

https://www.gov.uk/government/collections/government-gateway-support-for-software-developers

How to use the test services

PDF, 289 KB, 6 pages

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Non form validation rules version 1.0 (1 December 2016)

PDF, 263 KB, 11 pages

HMRC(IR) mark: support for software developers

https://www.gov.uk/government/collections/hmrcirmark-support-for-software-developers

Copy declaration version 1.0 (1 December 2016)

PDF, 182 KB, 2 pages

Attachment recognition version 1.0 (8 February 2017)

172 KB

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Details

Returns technical specifications for software developers working with the Self Assessment Online service.

Published 22 December 2016
Last updated 16 January 2018 + show all updates

1. 16 January 2018

   New version of the 'how to use the test services' document added.

2. 29 March 2017

   Update to 2017 generic Self Assessment technical specifications.

3. 22 December 2016

   First published.