Question to the HM Treasury:

To ask the Chancellor of the Exchequer, with reference to the answer of 26 March 2026 to Question 121729 on Council tax: Valuation, which datasets from within the Census geographies the HMRC Valuation Office uses for council tax modelling; and whether any other Census data is utilised.

The Valuation Office’s Council Tax modelling uses Census geography data comprising Output Areas (OAs), Lower Layer Super Output Areas (LSOAs) and Middle Layer Super Output Areas (MSOAs). No other Census data is used within the Council Tax modelling.