Rapenburg 65, 2311 GJ Leiden

Phone +31 (0) 71 - 751.01.30

Fax +31 (0) 71 - 751.01.31

Rapenburg 65, 2311 GJ Leiden

Phone +31 (0) 71 - 751.01.30

Fax +31 (0) 71 - 751.01.31


Management and Staff

Prof. dr. Frank Engelen and Prof. dr. Sjoerd Douma are the Academic Directors of the Program. They are assisted by a program coordinator and by teaching assistants (TAs) who teach work shops and tutorials throughout the Fall semester and occasionally during the Spring semester.

Prof. dr. Frank Engelen

Frank Engelen (1971) is professor of International and EU tax law at Leiden Law School and fellow of the International Tax Center Leiden. He is also a Tax Partner and Member of the Board of Management at PwC Netherlands and a substitute Judge at the Court of Appeals of The Hague. Frank graduated in tax law from the Erasmus University Rotterdam in 1996, where he received a doctorate in law (dissertation: Interpretation of tax treaties under international law) in 2004. In 2005, he was appointed as a Professor at Leiden University (inaugural lecture: On values and norms. The principle of good faith in the law of treaties and the law of tax treaties in particular). He has authored and co-authored several books and numerous articles on international and European taxation issues. He is a member of the Netherlands Association of Tax Advisors (Nederlandse Orde van Belastingadviseurs), the Association for Tax Research (Vereniging voor Belastingwetenschap), the International Fiscal Association and the European Association of Tax Law Professors. At PwC, Frank advises Dutch multinationals on corporate income tax, EU law and tax treaties. On several occasions, Frank has served as an expert witness in international tax matters.

Prof. dr. Sjoerd Douma

Sjoerd Douma (1976) is a Professor of International and EU Tax Law at Leiden University, where he lectures EU tax law and procedural tax law. In 2011, he defended his PhD thesis entitled ‘Optimization of Tax Sovereignty and Free Movement’ at Leiden University (published in the IBFD Doctoral Series, No. 21). In 2012, this PhD thesis won the bi-annual Dissertation Prize awarded by the Dutch Association for Tax Research (Vereniging voor Belastingwetenschap). Sjoerd heads the Dutch branch of PwC’s EU Direct Tax Group, a network of EU law experts in all 28 EU Member States, Norway and Switzerland. This international network is coordinated from the Netherlands, and Sjoerd plays a leading role in it. Sjoerd is also a substitute judge of the Court of Appeals of Arnhem, the Netherlands. He is a member of the permanent committee of contributors to leading Dutch and international tax journals. He has authored and co-authored numerous publications on national, international and European tax law. Sjoerd is a frequent speaker at national and international conferences. Prior to joining Leiden University and PwC in 2004, Sjoerd was a legal clerk with the Tax Chamber of the Dutch Supreme Court. He obtained an LLM in tax law at Leiden University in 1998 and degrees in criminal law and civil procedural law at Leiden University in 2003.

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last update: 14 February 2017

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