In 2006, Polish couple Marek and Małgorzata Rzewuski bought a house on the outskirts of Warsaw because they were expecting a child and “we wanted more space and our own garden”.
Like hundreds of thousands of other Polish homebuyers at the time, they were advised by their bank to get a mortgage in Swiss francs to benefit from lower interest rates in Switzerland than in Poland. Nobody discussed the flip side of introducing a foreign exchange risk into a 30-year mortgage of SFr200,000 ($205,000).
“This was presented as the best opportunity on the market,” Marek recalls. “The Swiss franc was