Question to the HM Treasury:

To ask the Chancellor of the Exchequer, whether her Department holds data on the tax gap disaggregated by (a) local authority and (b) parliamentary constituency.

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 and details of the estimate methodologies are published annually and are available at: Measuring tax gaps 2024 edition: tax gap estimates for 2022 to 2023 - GOV.UK.

HMRC does not estimate the tax gap by local authority or by parliamentary constituency.