Software developers: PAYE update 22

Income Tax and National Insurance changes from the Autumn Statement 22 November 2017 and Scottish Draft Budget 14 December 2017.


Class 1 National Insurance contribution rates 2018 to 2019

This file may not be suitable for users of assistive technology. Request an accessible format.

If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email Please tell us what format you need. It will help us if you say what assistive technology you use.


This update gives guidance to PAYE software developers for the 2018 to 2019 tax year. Changes to values used in technical specifications are given along with other information to help with PAYE software development.

Published 19 March 2018