LM. in tax law, at Leiden University (The Netherlands).
Member of the Dutch Association of Tax Advisors (NOB) and of the International Fiscal Association (IFA).
Independent advisor on international tax matters, at Hans Mooij International Tax Consultant.
Visiting Professor at the International Tax Centre of Leiden University.
Founder and chairman of the TRIBUTE Foundation for international tax dispute resolution.
Former tax treaty negotiator and Competent Authority in MAP cases of the Netherlands Ministry of Finance.
Former International Tax Counsel of the Netherlands Tax and Customs Administration (Belastingdienst).
Former Netherlands delegate to the OECD Working Party No. 1 on the OECD Model Tax Convention and member of its Steering Group.
Former Chief Tax Counsel of the United Nations Transitional Government in East Timor (UNTAET).
Author/editor of publications on various topics of international taxation, including, among others, dispute resolution, anti-tax avoidance rules and administration of tax treaties.
Representations to the OECD, United Nations Committee of Experts on International Tax Cooperation, IFA, and various academic institutions.
More than 30 years of experience in international taxation, of which 20 years in public office and with international organizations, and over 10 years in private practice.
Advised and assisted large corporate taxpayers and other advisors.
Mediated in discussions with authorities, in various jurisdictions, on MAPs, unilateral or bi/multilateral APAs, pre-filing agreements, tax rulings on international tax issues, and unlateral or bi/multilateral cooperative compliance agreements.
Facilitated discussions with authorities by providing independent, neutral, technical advice.
Advised on strategies for dispute management strategies and strategies in controversies, court litigation and arbitrations.
Assisted in international tax audits and international exchanges of information.
Provided expert witness testimonies in court and arbitration cases.
Recent engagements involved oil and gas, international shipping and air transport, and collective portfolio investment industries, and anti-avoidance, beneficial ownership, and permanent establishment issues, and administrative procedures for exemption/refund of withholding taxes.