UK’s New Annual ‘Mansion Tax’: What High-Value Homeowners Should Know

The UK has introduced an annual “mansion tax” on properties worth over £2 million. Announced in the November 2025 Budget, this High Value Council Tax Surcharge will charge owners at least £2,500 every year starting in 2028. Under the scheme, around 100,000–150,000 homes—mostly in London and the Southeast—will fall into the new bracket. The aim is to correct outdated council tax bands and ensure wealthier homeowners contribute a fairer share toward public services. Homeowners near the £2 million threshold should consider getting a professional valuation and budgeting for the extra cost. The real-world impact on the upper end of the market and “asset-rich, cash-poor” owners remains to be seen.

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