At your Side. | OPES AG has offices in Emmenbrücke, Lucerne and Zug. It brings together comprehensive expertise in the fields of family business services, finance and accountancy, real estate, taxes, corporate consultancy and auditing. Our target clients are small and medium-sized enterprises as well as private individuals and public organisations in Central Switzerland. OPES is organised in the form of a partnership. Our partners are entrepreneurs and guarantee exceptional commitment and dedication in the interest of long-term client solutions.