Question to the HM Treasury:

To ask the Chancellor of the Exchequer, what estimate she has made of the successful appeal rate against valuations for the new council tax surcharge.

This question was answered on 21st April 2026
HMRC Valuation Office is developing its approach to the High Value Council Tax Surcharge. The Government recognises the importance of the right to appeal and will consult on the details of this in 2026.