I have owned a studio in Paris for 25 years. I decided to sell it. The notaire tells me that I am subject to social taxation on surplus value. What is it about ?

The capital gain realized on the sale of a property is in principle liable to the tax on capital gains.

However, real estate (apartments, houses, building plots) held for more than 22 years are exempt from capital gains tax only.

On the other hand, social levies are only levied at the end of thirty years. They are set at 15.5%.