July 17, 2026

Property prices are at record levels: anyone selling a house or flat today that was bought ten or twenty years ago often realises a gain of several hundred thousand francs. But the tax authorities want their share of that gain too – via the property gains tax.
How high the tax turns out depends on factors that many sellers underestimate: from the holding period and the quality of the receipts collected to the question of whether a replacement property is being bought. Those who know these levers and plan the sale accordingly can often reduce the tax burden considerably – entirely legally.