To ask Mr Chancellor of the Exchequer, what estimate he has made of revising the starting threshold for (a) basic-rate and (b) top-rate income taxpayers for each £500 the threshold is raised.

The cost of raising the income tax limits may be approximated using the “Direct effects of illustrative tax changes” table as published on the internet at the following address:

https://www.gov.uk/government/publications/direct-effects-of-illustrative-tax-changes