There have been claims and counter-claims about the amount of money that Revenue & Customs (HMRC) has made or saved for the exchequer.
The prime minister has quoted a figure of £160bn since 2010, but the shadow chancellor, John McDonnell, dismissed that figure, saying: "It looks as though they have extrapolated from one figure over the full period of their office."
HMRC has given some details of how this figure is calculated, and it certainly is not just an extrapolation over seven years from a single figure. The 2016-17 figure for this was £28.9bn.
There are many assumptions and estimations on the way to the final figure. HMRC has provided a breakdown of how it is calculated.
The first part of the figure, which is the most likely to be accurate, is the amount that HMRC has recovered in taxes. There is a certain amount of estimation involved if cases have not yet been concluded, but the figure is basically accurate. It was £10.3bn, more than a third of the total in 2016-17.
The next part is the amount of money that HMRC reckons it would have lost if it had not intervened, which was £7.9bn last year. That's things such as disrupting criminal activity and rejecting fraudulent claims for repayment.
The prime minister has quoted a figure of £160bn since 2010, but the shadow chancellor, John McDonnell, dismissed that figure, saying: "It looks as though they have extrapolated from one figure over the full period of their office."
HMRC has given some details of how this figure is calculated, and it certainly is not just an extrapolation over seven years from a single figure. The 2016-17 figure for this was £28.9bn.
There are many assumptions and estimations on the way to the final figure. HMRC has provided a breakdown of how it is calculated.
The first part of the figure, which is the most likely to be accurate, is the amount that HMRC has recovered in taxes. There is a certain amount of estimation involved if cases have not yet been concluded, but the figure is basically accurate. It was £10.3bn, more than a third of the total in 2016-17.
The next part is the amount of money that HMRC reckons it would have lost if it had not intervened, which was £7.9bn last year. That's things such as disrupting criminal activity and rejecting fraudulent claims for repayment.
