I have been separated from my partner for two months. We bought a house together, and he is still living in it. We are about to sign a preliminary sale agreement. Will I have to pay capital gains tax when the house is sold?

No. You can benefit from the exemption provided for under Article 150 U II-1° of the General Tax Code, as long as the property was your main residence at the time of the separation, has been occupied by your ex-partner until the sale, and the sale takes place within a normal time frame. Under normal economic conditions, one year is generally considered the maximum reasonable time limit.