The UK government is set to implement a new council tax surcharge, often dubbed the “mansion tax,” targeting properties valued over £2 million. This measure, expected to come into effect in April 2028, will see tax authorities conducting inspections of high-value homes to verify their worth. The inspections will be necessary where interior features or precise property measurements are needed to determine the accurate valuation of a property.
According to the proposal, property owners with homes valued between £2 million and £2.5 million will incur an annual surcharge of £2,500. This charge increases to £3,500 for homes priced up to £3.5 million, £5,000 for those valued between £3.5 million and £5 million, and £7,500 for properties exceeding the £5 million mark. Importantly, this surcharge is in addition to the existing council tax, with adjustments made annually to reflect inflation rates.
Inspectors will evaluate several property characteristics, including the home’s size, architectural details, the number of bedrooms and bathrooms, and the total number of storeys. Property owners who intentionally hinder the work of valuation officers risk facing a £200 fine. Moreover, failure to provide necessary information without a reasonable excuse could lead to penalties reaching up to £500.
The government has assured that these inspections will be carried out in alignment with official guidelines and will require prior agreement with the property owners. This approach aims to ensure transparency and cooperation during the valuation process, as authorities move forward with this significant taxation change.