Tax structure and parameters statistics

Historic Income tax and National Insurance rates and allowances.

Main features of Income Tax (1948-present) and National Insurance contributions (1975-present).

You can find all tables for previous years on the National Archives website.


  1. Income Tax personal allowances and reliefs
  2. Rates of Income Tax
  3. National Insurance contributions

Historical Tables

  1. Rates of Surtax 1948 to 1973
  2. Main features of National Insurance contributions: 1985 to 1999
  3. Main features of National Insurance contributions: 1975 to 1985
Published 28 March 2014
Last updated 5 April 2019 + show all updates
  1. The publications 'Income Tax personal allowances and reliefs', 'Rates of Income Tax' and 'National Insurance contributions' have been updated with data for the 2019 to 2020 tax year.
  2. Updated tables
  3. Updated tables
  4. Tables updated for 2016-17.
  5. Tables updated for 2015-16
  6. Various tables updated to March 28th 2014.
  7. First published.