Global Vision - Local Identity
BDO was founded in 1963 by five auditing and consulting firms from Germany, the Netherlands, the United Kingdom, the United States and Canada. It was initially named Binder Seidman International Group (BSIG) and operated as a network. In 1973, the network changed its name to BDO - Binder Dijker Otte & Co. and, in 1988, to BDO International. In 2010, following legal restructuring, the network adopted the BDO brand name exclusively.
BDO in Portugal was founded in 1981 by Ernesto Ferreira da Silva with the corporate purpose of providing audit and consulting services. BDO Portugal has been expanding its range of services and clients and currently has seven offices and around 400 employees.

Timeline
1963 - Founding of Binder Seidman International Group (BSIG)
1973 - Change of name to Binder Dijker Otte & Co
1981 - BDO is established in Portugal by Ernesto Ferreira da Silva
1988 - Adoption of new rules and corporate identity and the acronym BDO
1990 - BDO Portugal joins the Policy Board of BDO International
1991 - Opening of the Porto office
1998 - Opening of the Cape Verde office in the city of Praia
1999 - Opening of the Mozambique office in the city of Maputo
2001 - Opening of the Funchal office
2002 - Ernesto Ferreira da Silva is elected Chairman of the General Assembly of BDO International
2004 - Opening of the Faro office
2005 - Opening of the Angola office in Luanda
2010 - BDO introduces its new Corporate Visual Identity, adopting the BDO brand globally
2019 - Opening of the Braga office
2022 - Opening of the Maia office
2023 - Opening of the Leiria office
2024 - Opening of a new office in Faro