Question to the HM Treasury:

To ask Mr Chancellor of the Exchequer, how much additional tax HM Revenue and Customs expects to gather by March 2015 as a result of investigations into unpaid tax; and how much tax it has so gathered since May 2010.

HMRCs compliance performance is measured using internal management information systems. This data is constructed from information derived from individual cases or activities within HMRC. These systems can be split into type of tax, but not into behaviour and customer group, as this is not a standard HMRC performance reporting metric.

The additional tax revenues collected from compliance activities by HM Revenue and Customs for each year since May 2010 is as follows.

*Note: the methodology for calculating additional tax revenues from compliance activity changed between 2010/11 and 2011/12, and so the figure of £13.9bn is not directly comparable to later years.