Guidance

Self Assessment technical specifications for software developers (2018)

Use this guidance for support if you're a software developer working with the Self Assessment Online service.

From:
HM Revenue & Customs
Published
15 January 2018
Last updated
6 September 2018 — See all updates

Documents

Transaction Engine: support for software developers

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

Non form validation rules version 1.1 (15 August 2018)

PDF, 178 KB, 10 pages

HMRC(IR) mark: support for software developers

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

Acceptable characters version 1.0 (19 December 2017)

PDF, 208 KB, 1 page

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Copy declaration version 1.0 (1 December 2017)

PDF, 185 KB, 2 pages

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Attachments recognition version 1.0 (13 February 2018)

ZIP, 166 KB

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Details

These documents are technical specifications for software developers working with the Self Assessment Online service.

Updates to this page

Published 15 January 2018
Last updated 6 September 2018 + show all updates

  1. Non form validation rule document updated.

  2. Attachments recognition version 1.0 has been added to the page.

  3. First published.

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