New taxation rules, which have been adapted to the international standard, entered into force in Switzerland on 1 January 2020. The fifth episode of our Family Business Stories is dedicated to the effects and opportunities arising from this tax reform. We explain why international multi-corporations with the previous tax regimes are not the only companies that should pay attention to the new provisions. Step-up with grandfathering rules or replacement measures like the patent box or research and development deduction can also be attractive for family offices with subsidiaries operating in Switzerland, Swiss family businesses and SMEs.