Question to the HM Treasury:

To ask the Chancellor of the Exchequer, further to the OBR Economic and fiscal outlook report of 26 November 2025, Table 3.9, what is her Department's estimate of the monetary annual value of the behavioural effects from the introduction of the council tax surcharge when implemented, and whether this includes lost revenue from (a) stamp duty transactions, (b) housebuilding and (c) taxation derived from home improvements.

Estimates of the direct behavioural effects are set out on page 78 of the Office for Budget Responsibilities Economic and Fiscal Outlook:https://obr.uk/docs/dlm_uploads/OBR_Economic_and_fiscal_outlook_November_2025.pdf

A breakdown of the policy costing is available on page 51 of the Autumn Budget 2025 policy costing document: Budget_2025-Policy_Costings.pdf