BDO AG

BDO AG is one of the largest audit, trust and advisory firms in Switzerland, headquartered in Zurich. It provides services in audit, financial services, trust and accounting, tax and legal advisory, and business consulting. Its clients include small and medium-sized enterprises (SMEs), large corporations, listed companies, public administrations and non-profit organisations. In the 2025 financial year, BDO employed around 1,800 people at more than 40 locations across Switzerland and generated revenue of CHF 293.6 million. The firm was founded in 1932 as Visura Treuhand-Gesellschaft in Zurich. At the end of 2000 it was renamed BDO Visura, and it has operated under the name BDO AG since 2009. Since 1992, BDO Switzerland has been part of the global BDO network, which is represented in over 160 countries and serves internationally oriented clients. Ownership is largely in the hands of the firm's partners: 80.5 percent of shares are held by partners active in executive roles at BDO, while a further 19.5 percent are held by the company's own pension foundation. Since 1 January 2021, Thomas Studhalter has led BDO Switzerland as CEO. The management team also includes the heads of the five regional directorates and the heads of the product areas audit, trust, tax & legal, and the COO. BDO is present throughout Switzerland with more than 40 locations. It is licensed by the Swiss Federal Audit Oversight Authority (RAB) as a state-supervised audit firm, which entitles it to conduct statutory annual and consolidated financial statement audits for public interest entities, including listed companies and other regulated institutions. BDO also holds RAB licences to audit banks, securities firms, asset managers and fintech companies, and acts as auditor for self-regulatory and supervisory organisations. In addition, BDO is appointed by the Swiss Financial Market Supervisory Authority (FINMA) as an agent for audits, investigations and other supervisory mandates at licensed financial intermediaries; these mandates are carried out by BDO Financial Services. Through its BDO Digital business segment, the firm promotes digitalisation among Swiss companies. Its offering includes strategy development, process optimisation, cyber security, IT consulting, the operation of modern IT infrastructures and digital outsourcing solutions. BDO also supports clients on sustainability and ESG reporting, from strategy to audit-ready implementation, covering standards such as ESRS, GRI and VSME. In its 2025 annual report, BDO continued the positive business development of recent years, achieving revenue of CHF 293.6 million, an increase of 4.2 percent over the previous year.

BDO AG traces its origins to 1932, when it was founded as Visura Treuhand-Gesellschaft in Zurich. The firm established itself as a trust and audit company in the Swiss market. At the end of 2000, it was renamed BDO Visura, reflecting its integration into the international BDO network. Since 1992, BDO Switzerland has been part of the global BDO network, which is represented in over 160 countries and serves internationally oriented clients. The current name BDO AG has been in use since 2009. Over the decades, the firm expanded its service portfolio beyond traditional audit and trust services to include financial services, tax and legal advisory, business consulting, digitalisation and sustainability/ESG reporting. It grew its presence across Switzerland to more than 40 locations. In the 2025 financial year, BDO employed around 1,800 people and generated revenue of CHF 293.6 million, a 4.2 percent increase over the previous year. Ownership remains largely with the firm's partners, who hold 80.5 percent of shares, while the company's own pension foundation holds 19.5 percent. Since 1 January 2021, Thomas Studhalter has served as CEO of BDO Switzerland. The firm is licensed by the Swiss Federal Audit Oversight Authority (RAB) as a state-supervised audit firm and is appointed by FINMA for audits and investigations at licensed financial intermediaries.

• 2026

  BDO Business Campus pilot programme for apprentices starts in August 2026 with around 30 participants.

• 2025

  Revenue reaches CHF 293.6 million, up 4.2 percent; around 1,800 employees at over 40 locations.

• 2021

  Thomas Studhalter becomes CEO on 1 January 2021.

• 2009

  Current name BDO AG adopted.

• 2000

  Renamed BDO Visura at the end of 2000.

• 1992

  BDO Switzerland becomes part of the global BDO network.

• 1932

  Founded as Visura Treuhand-Gesellschaft in Zurich.

A leading Swiss audit and advisory firm with global network reach, serving SMEs, listed companies and public institutions.

• Audit and assurance

  Statutory audits for public interest entities, banks, securities firms, asset managers and fintech companies.

• Financial services

  Audits, investigations and supervisory mandates for licensed financial intermediaries on behalf of FINMA.

• Trust and accounting

  Trust services including automated accounting solutions.

• Tax and legal advisory

  Tax and legal advisory services.

• Business consulting

  Consulting services including company succession and acquisitions.

• BDO Digital

  Digitalisation services: strategy, process optimisation, cyber security, IT consulting, IT infrastructure and digital outsourcing.

• Sustainability and ESG reporting

  ESG strategy, governance, data processes and audit-ready reporting aligned with ESRS, GRI, VSME and rating requirements.

1. 1BDO Schweiz - Prüfung | Treuhand | Steuern | Beratung - BDObdo.ch
2. 2Nachhaltigkeit & ESG-Reporting mit BDO Schweiz - BDObdo.ch
3. 3Buchhaltung automatisieren: Mehr Zeit für das Wesentliche - BDObdo.ch
4. 4Firma kaufen - Wie geht das? - BDObdo.ch
5. 5BDO AG - Wikipediade.wikipedia.org
6. 6BDO AG - Wikidatawikidata.org