How mansion taxes will make us all poorer

There are few things most of us enjoy more than watching the value of our houses rocket. Every homeowner will have felt the pulse of excitement that comes from a mental calculation of how much has been added to their net worth by the latest bulletin from Rightmove or the Halifax. Yet fast forward two or three years and the same news could make our hearts sink — because by then a mansion tax could well have been introduced, and rising prices will take many middle-class owners over the threshold.

The mansion tax bandwagon has been rolling for several years, pushed enthusiastically by business secretary Vince Cable and his Lib Dem colleagues. The idea is that any home worth more than £2 million would be taxed at an annual rate of 1 per cent of its value above the threshold. In February, Labour leader Ed Miliband embraced the concept — and there’s a growing sense of inevitability about it.