Question to the HM Treasury:

To ask the Chancellor of the Exchequer, for which tax reliefs HM Revenue & Customs maintains estimates of potential error and fraud losses, and what those estimates are.

HMRC undertakes internal assessments of compliance risks to inform the deployment of its resources. It does not routinely publish detailed relief-level risk assessments or estimates as doing so could provide insight into HMRC’s compliance approach and undermine its ability to protect the Exchequer.