Baker Tilly OBT AG is owned by OBT AG, one of Switzerland’s leading providers of audit, accounting as well as tax and legal c ... onsulting services. Baker Tilly OBT AG focuses on international companies or companies with an international connection, while OBT AG specialises in national business. Given our experience and competence Baker Tilly OBT AG tax specialists bring to each assignment a professional thoroughness and a depth of knowledge. read more