Question to the HM Treasury:

To ask the Chancellor of the Exchequer, what assessment he has made of the total amount of tax that has been (a) avoided, (b) evaded and (c) uncollected in (i) the last 12 months, (ii) since 2019 and (iii) since 2010.

HM Revenue and Customs (HMRC) estimates the size of the tax gap, which is the difference between the amount of tax that should, in theory, be paid to HMRC, and what is actually paid. The tax gap statistics are published annually and are available on the GOV.UK website here: https://www.gov.uk/government/statistics/measuring-tax-gaps.

Historical figures for the tax gap for taxpayer behaviours can be found in table 7.1 of the online tables on the GOV.UK website here: https://www.gov.uk/government/statistics/measuring-tax-gaps-tables.