Guidance

Self Assessment technical specifications (2016): individual returns

Individual returns technical specifications for Self Assessment Online software developers.

Documents

Self Assessment individual RIM artefacts version 1.2 (19 February 2016)

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Tax and National Insurance contributions calculation version E16.0 (21 January 2016)

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Stage 13 (payments on account) tax and National Insurance contributions calculation version 4.0 (8 July 2016)

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Test case generator version E12.1 (8 July 2016)

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MTR mapping document version 1.1 (26 February 2016)

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Specials version 1.0 (14 January 2016)

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Recognition process and additional test case data version 1.0 (15 February 2016)

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Individual valid sample version 1.0 (26 February 2016)

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Details

Individual returns technical specifications for software developers working with the Self Assessment online service.

Published 16 October 2015
Last updated 2 March 2017 + show all updates
  1. Updated document exclusion version 5.0 (27 January 2017) added.
  2. New documents added for Stage 13 (payments on account) tax and National Insurance contributions calculation version 4.0 (8 July 2016), test case generator version E12.1 (8 July 2016) and exclusions version 4.0 (13 July 2016).
  3. All documents updated for the 2015 to 2016 tax year.
  4. Attachments added to the page.
  5. First published.