• A global network

A global network

BDO is the 5th largest global audit and advisory network. In each country, the BDO network members assist both domestic and international clients with a wide range of services.

The BDO network has more than 95 000 employees in 164 countries, with revenues of $11,8 billion in 2021.



  • Audit
  • Advisory
  • Tax and accounting



Founded in 1963 by British, Dutch, German, American and Canadian firms, BDO has been expanding its presence and services around the world for nearly 50 years to be able to meet its clients' needs.

1963: Firms in the UK, Netherlands, Germany, USA and Canada decide to join forces and share their expertise and experience to meet all clients' needs. They became known as the Binder Seidman International Group.

1973: 10 years later, the name Binder Dijker Otte & Co: BDO is adopted.

1988: The firms rely on an international network to offer clients excellence and proximity. The BDO logo is adopted and the network continues its international expansion.

2007: BDO is re-created in France in December 2007. The firm was founded by six partners who merged their respective firms: ABPR, Léger & Associés, Patrick Giffaux.

2009: BDO becomes the single signature for all members of the network.

Today: BDO has a presence in 164 countries and has over 95,000 employees worldwide.