Question to the HM Treasury:

To ask Mr Chancellor of the Exchequer, how much of £160 billion of extra revenue that HM Revenue and Customs estimates has been secured as a result of tax compliance activities has been collected.

HM Revenue and Customs (HMRC) was formed in 2005. To go back further than 2005, given the changes in departmental structure and amendments to the definition and calculation of compliance yield, would mean the figures would not be comparable.

Compliance yield includes cash expected and an estimate of the amount of revenue HMRC prevented from being lost, together with the impact of legislative changes, process improvements and current compliance activity on future customer behaviour.

With reference to the below table of annually reported compliance yield, HMRC generated £52 billion of compliance yield by tackling avoidance, evasion and non-compliance from 2005-06 to 2009‑10. From the start of 2010‑11 through to quarter 1 2017-18, HMRC has generated over £160 billion in compliance yield.

Details on how compliance yield is calculated, and its various components, can be found in HMRC’s Annual Reports and quarterly performance publications.