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.

Documents

Transaction Engine: Support for software developers

How to use the test services

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HMRC(IR) mark: support for software developers

Attachment recognition version 1.0 (8 February 2017)

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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. New version of the 'how to use the test services' document added.
  2. Update to 2017 generic Self Assessment technical specifications.
  3. First published.