The core activity of Trustzone AG is the provision of services in the fields of auditing, tax consulting, accounting and fiduciary services for companies and private individuals. Specifically, this includes: Auditing (audit), Tax consulting and planning, Accounting and financial accounting, Fiduciary and auditing services. The company positions itself as an independent trust company that creates special values for its customers and ensures the highest quality through its membership in expert associations and supervisory authorities such as EXPERTsuisse and the Swiss Federal Audit Oversight Authority RAB.