The UK government is set to initiate a new council tax surcharge, often dubbed the “mansion tax,” targeting properties valued over £2 million. Slated for implementation in April 2028, this measure aims to impose additional financial obligations on owners of high-value estates. The tax will be separate from current council tax systems and is designed to adjust annually in line with inflation rates.
To accurately assess the value of these properties, tax authorities plan to conduct inspections, focusing on aspects such as size, architectural details, and the number of bedrooms, bathrooms, and storeys. Owners of properties that fall within the £2 million to £2.5 million range will face an annual surcharge of £2,500. This charge escalates to £3,500 for homes valued up to £3.5 million, increases to £5,000 for those between £3.5 million and £5 million, and peaks at £7,500 for properties exceeding £5 million in value.
The inspections will be carried out by valuation officers who will need to evaluate internal features and property dimensions to accurately determine a home’s worth. The government has assured property owners that these inspections will be arranged by mutual agreement and will adhere strictly to official protocols.
Penalties are in place for those who fail to cooperate with the valuation process. Property owners who deliberately hinder valuation officers could incur a fine of £200, while those who do not furnish necessary information without a valid reason might face penalties up to £500.