BDO Service Lines: Audit, Tax, and Advisory Services | BDO History
BDO stands for Binder, Dijker, and Otte. The initials come from founding European member firms whose names formed the recognizable BDO acronym. BDO Service Lines: Audit, Tax, and Advisory
Learn the core service lines associated with BDO worldwide: audit, tax, and advisory. See how these services supported long‑term growth.

BDO is commonly associated with three core lines: audit, tax, and advisory.

Read a Philippines-focused timeline: founded in 1967 as Acme Savings Bank, later renamed Banco de Oro, and developed into BDO Unibank as a universal bank.
In the Philippines, BDO Unibank is described as having been founded in 1967 as Acme Savings Bank and later renamed Banco de Oro.
It is commonly described as evolving into a full‑service universal bank known as BDO Unibank and recognized as one of the largest banks in the Philippines.
BDO Unibank is distinct from BDO (Binder Dijker Otte), the global accounting network, even though the “BDO” name appears in both contexts.

Is BDO Part of the Big Four?

A quick, fact-focused explanation of how BDO is positioned relative to the Big Four accounting networks and why many sources describe BDO as a leading global network.

BDO is widely referenced as a major global accounting network and is often compared with larger networks commonly called the “Big Four”.

Many readers search this question alongside “BDO history” to understand where BDO fits among international audit networks.

BDO History FAQ

  • BDO History FAQ
  • Answers to common questions about BDO history, including where BDO came from, what the initials mean, major milestones, and how BDO differs from BDO Unibank.
  • Where did BDO come from? BDO is commonly traced back to 1963, when accounting firms from the UK, Germany, the Netherlands, the United States, and Canada formed an international network.
  • What is the full name of BDO? BDO stands for Binder, Dijker, and Otte.
  • Is BDO a Filipino brand? BDO Unibank is a Philippine bank with its own history, while BDO (Binder Dijker Otte) is a global accounting network.

What happened in 1973? The network adopted the name BDO, derived from the initials of the founding European firms.

What happened in 2007–2010? Member firms aligned under a single BDO brand during a restructuring period.
Agrica

BDO FAQ

This site focuses on clear, dated milestones to help readers researching “BDO history” find the context they need.

Note: Black Desert Online is an unrelated use of “BDO” and is not covered on this site.
Brand Unification

BDO Founded 1963BDO Founded in 1963: The Origins”

Explore how BDO began in 1963 as an international accounting network formed by member firms from the UK, Germany, the Netherlands, the United States, and Canada.
BDO traces its origin to 1963, when independent accounting firms from the UK, Germany, the Netherlands, the United States, and Canada joined forces to share knowledge and support cross‑border clients.

The early network is often referenced as the Binder Seidman International Group in historical overviews of the BDO story.

Global Network
    Why the Name BDO Was Adopted (1973)
    Learn why the network adopted the name BDO in 1973 and how Binder, Dijker, and Otte shaped the initials that became the global identity.

    In 1973, the international network adopted the name BDO, derived from the initials of its founding European member firms: Binder, Dijker, and Otte.

    Services
    BDO International 1988
1988: BDO International A key milestone in BDO history is 1988, when the organization became known as BDO International, strengthening a shared global identity.

A widely cited milestone is 1988, when the organization became known as BDO International.

From 2007 to 2010, BDO member firms aligned under a single BDO brand. See how the restructuring supported consistent recognition worldwide.
Between 2007 and 2010, the network underwent restructuring, with member firms aligning under the single BDO brand.
BDO International 1988