Guidance

Self Assessment technical specifications for software developers (2019)

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

From:
HM Revenue & Customs
Published
13 December 2018
Last updated
8 March 2019 — 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 service version 1.0 (27 November 2018)

PDF, 138 KB, 7 pages

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Non form validation rules version 1.0 (27 November 2018)

PDF, 151 KB, 10 pages

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HMRC(IR)mark: support for software developers

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

Acceptable characters version 1.0 (27 November 2018)

PDF, 91.1 KB, 1 page

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Copy declaration version 1.0 (27 November 2018)

PDF, 78.4 KB, 2 pages

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Attachments recognition version 1.0 (18 February 2019)

ZIP, 176 KB

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Details

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

Updates to this page

Published 13 December 2018
Last updated 8 March 2019 + show all updates

  1. A new 'Attachments recognition version 1.0 (18 February 2019)' has been added.

  2. First published.

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