Ostschweizerische Treuhand Zürich AG, short OTG, has been in business since 1918 as an accredited audit firm conducting full and limited audits. OTG exists to help creating long-term value for clients, people and markets while establishing in-depth relationships. Working across the areas of finance, accountancy and auditing as well as corporate and tax consultancy, the OTG team asks better questions and provides answers for the complex issues faced in our world today.