Biography
Sebastiaan de Buck – Global Head of Tax with Unilever
Sebastiaan de Buck is Global Head of Tax with Unilever. Since joining Unilever in 2011, Sebastiaan has held a wide range of positions in Unilever, covering Dutch, regional and global tax and transfer pricing matters. Prior to joining Unilever he was with KPMG in the Netherlands in the international tax & transfer pricing practice since 2004. Sebastiaan has specialized in corporate income taxation, international taxation and tax treaties, transfer pricing with key focus on transfer pricing in relation to intangibles, services and financial transactions, as well as has a key interest in tax transparency and tax governance. He studied fiscal economics at the University of Maastricht, and has completed various post-university tax programs at amongst others the Erasmus University in Rotterdam, International Tax Center in Leiden and New York University on European and international taxation. He is a Member of the Board of the Dutch IFA branch, is a Member of the Board of the Dutch Association of Tax Advisors where he represents the in-house tax community, and is a Member of the Dutch Association of Tax Advisors’ Committee on Tax Law Proposals. He is a permanent contributor to the international tax documentation of SDU Uitgevers where he writes on subjects in relation to the OECD Model Tax Convention and the topic of Residence. He amongst others authored the Dutch Branch Report for the IFA Cahiers 2024 Subject 2: Practical approaches to international tax dispute prevention and resolution. He is a frequent speaker at conferences and seminars where he primarily presents on the perspectives of a multinational company in the areas of tax and development, the tax policy and design considerations of international (e.g. OECD or EU) tax, and on the subject of tax transparency. He also teaches a course on the aspects of tax transparency and dispute prevention and resolution as part of the Advanced Master in International Tax Law of the University of Amsterdam.