Guidance

P9X: Tax codes

Use P9X to find out which PAYE tax codes to change, how to change them and which codes to carry forward ready for the new tax year.

Documents

P9X(2018) - Tax codes to use from 6 April 2018

Details

This guidance explains which tax codes employers must change and how to change them and which codes to carry forward ready for the new tax year on 6 April.

Published 28 March 2014
Last updated 22 February 2018 + show all updates
  1. Scottish Income Tax rates and thresholds have been updated following ratification by the Scottish Parliament.
  2. The 2018 version of P9X (English and Welsh) are now available for employers which confirms the tax codes to change and which to carry forward for the new tax year on 6 April.
  3. Scottish Income Tax rates & thresholds have been updated following ratification by the Scottish Parliament.
  4. The 2017 version of form P9X (English and Welsh) is now available for employers which confirms the tax codes to change and which to carry forward for the new tax year on 6 April.
  5. Revised P9X(2016) (Cymraeg) PDF added to the page.
  6. The 2016 version of form P9X (English and Welsh) is now available for employers which confirms the tax codes to change and which to carry forward for the new tax year on 6 April.
  7. The 2015 Welsh language version of form P9X is now available.
  8. The 2015 English language version of form P9X is now available for employers which confirms the tax codes to change and which to carry forward for the new tax year on 6 April.
  9. First published.