Mansion tax could mean £15,000 bills for some £5m-plus long-term empty homes
100% premium on high-value council tax surcharge to apply to long-term empty homes above £2 million from April 2028
Owners of expensive homes in the UK face annual “mansion tax” bills of up to £15,000 if their properties remain empty for 12 months or more, under plans set out by the Treasury. The 100% premium on the high-value council tax surcharge will apply to long-term empty properties above the £2 million value threshold from April 2028.