A lot of money is at stake. A gain of CHF 500,000, for example, is taxed at CHF 162,000 in the canton of St. Gallen after ten years of holding, and at CHF 30,000 in Sarnen in the canton of Obwalden. With the real estate gains tax calculator from Houzy, you can conveniently calculate the tax for real estate gains on your property online (basis: tax rate for single taxpayers and owner-occupied property - possible for every canton). This way you know how much you owe the tax office after the sale. Find out more in our article «Real Estate Gains Tax: What Sellers and Buyers Should Know».