Question to the HM Treasury:

To ask the Chancellor of the Exchequer, what estimate he has made of the cost to the public purse of raising the personal tax allowance from £11,850 to £12,500.

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

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

The table shows the cost of a £100 increase and a 10% increase in the Personal Allowance in 2018-19 through to 2020-21. This can be used to assess the expected cost of raising the Personal Allowance to £12,500.