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John Breen

Managing director Deloitte USA

John is a tax managing director in Washington’s national tax–transfer pricing team at Deloitte. He has more than 20 years of experience handling complex TP matters.

John served for 10 years in the TP branch (Branch 6) in the Office of Associate Chief Counsel (International), Internal Revenue Service (IRS), including service as senior technical reviewer and later as branch chief. While in the IRS Office of Chief Counsel, he served for five years as a US delegate to OECD Working Party 6. Before joining Deloitte, John was counsel at a national law firm, where he focused on TP matters, advance pricing agreements, and related matters. He specialises in TP planning and controversy matters, attribution of profits to permanent establishments, and treaty-related issues.

John holds a bachelor’s degree from Cornell University, a Juris Doctor degree from the University of Georgia School of Law, and a master of laws degree (taxation) from Georgetown University Law Center. He is a member of the District of Columbia Bar.

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