BDO is an accounting and advisory firm offering assurance, tax, and GRC services.
- Total raised
- $1.3B
- Employees
- 11,017
- Founded
- 1910
- Momentum
- 58
Steady
Data updated August 2026
About
About BDO
At a glance
BDO is a cybersecurity company specializing in GRC, founded in 1910 and headquartered in Chicago, United States. It has raised $1.3B in total funding, employs about 11,017 people, and is privately held.
BDO USA is a large accounting and professional services firm that provides assurance, tax, and advisory services to clients across a wide range of industries. The firm operates across 70+ U.S. offices with more than 12,000 professionals and reported $2.89 billion in U.S. revenue. BDO is also part of a global network spanning more than 160 countries and territories with over 119,000 people working from more than 1,800 offices worldwide. Within its advisory practice, BDO offers cybersecurity and risk-related services as part of its broader consulting and business advisory capabilities. These services are directed at helping organizations manage compliance, governance, and risk — areas that align with cybersecurity frameworks and regulatory requirements. BDO's advisory work covers industries such as healthcare, banking, and energy, among others. In 2023, BDO USA became the first large accounting and advisory organization to establish an Employee Stock Ownership Plan (ESOP). The firm also integrates artificial intelligence into its service delivery and internal operations under a responsible AI framework. BDO targets middle market and public companies, providing research and analysis such as board compensation studies, ESG guidance, and compliance and ethics consulting. The firm is structured as a professional services organization with a strong emphasis on culture, inclusion, and community engagement.
Momentum
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Valuation
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Funding
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Privately held
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FAQ
Frequently asked questions about BDO
When was BDO founded?▾
BDO was founded in 1910.
Where is BDO headquartered?▾
BDO is headquartered in Chicago, United States.
How much funding has BDO raised?▾
BDO has raised a total of $1.3B in total funding.
Is BDO public or private?▾
BDO is a privately-held company.
How many employees does BDO have?▾
BDO has approximately 11,017 employees.
What does BDO do?▾
BDO USA is a large accounting and professional services firm that provides assurance, tax, and advisory services to clients across a wide range of industries. The firm operates across 70+ U.S. offices with more than 12,000 professionals and reported $2.89 billion in U.S. revenue. BDO is also part of…