Guidance

Payroll technical specifications: National Insurance

National Insurance (NI) guidance for software developers working with payroll software.

Documents

NI guidance for software developers (2018 to 2019)

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NI guidance for software developers (2017 to 2018)

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NI guidance for software developers (2016 to 2017)

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NI guidance for software developers (2015 to 2016)

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NI guidance for software developers (2014 to 2015)

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Details

Technical specifications giving NI calculation methods and guidance for payroll software developers.

Published 1 January 2014
Last updated 17 January 2018 + show all updates
  1. The December 2017 version of the NI Guidance for Software Developers specification has been replaced with the January 2018 version.
  2. The 2018 to 2019 National Insurance guidance for software developers has been added.
  3. NI guidance for software developers (2017 to 2018) has been published
  4. The National Insurance guidance for software developers (2016 to 2017) attachment has been added to the page.
  5. Example 4 (pages 38 to 41) revised January 2015.
  6. First published.