Sebastiaan Claessen
Senior Associate - Tax Adviser
Sebastiaan Claessen, tax adviser, is a member of the International Tax Services team.
Amsterdam
Dutch, English
Sebastiaan is specialized in Dutch and international tax matters with a focus on multinationals active in the energy and financial sectors. He has broad experience in advising clients on cross-border restructurings, M&A, financing and holding structures, as well as on hedge accounting and other corporate tax related matters. Sebastiaan also frequently advises on EU tax developments. He is a member of our Participation exemption knowledge group.
Sebastiaan is a member of our US region team. In 2023 and 2024, Sebastiaan was seconded to our New York office as well as to an American law firm in their offices in Boston, Silicon Valley and San Francisco where he advised US clients on their European matters.
Work highlights
Contributions
Memberships
Dutch Association of Tax Advisers (NOB)
American Bar Association (ABA)
International Fiscal Association (IFA)
Qualifications
US International Taxation, International Tax Center Leiden, 2022
US Corporate Taxation, International Tax Center Leiden, 2022
MSc Fiscal Economics, Erasmus University Rotterdam, 2019 (cum laude)
BSc Fiscal Economics, Erasmus University Rotterdam, 2017 (cum laude)
Publications
Claessen, S.C.A. & Tijl, S.A. (2022). Enkele knelpunten bij liquidatieverliezen in tussenhoudstersituaties. Weekblad Fiscaal Recht 2022/207, 1310-1317.
Damen, B. & Claessen S.C.A. (2025). Inbegrepen royalty's en exclusieve verdeelrechten: de Australische PepsiCo zaak vanuit een Belgisch-Nederlands perspectief. Internationale fiscale actualiteit nr. 2025/06.
Claessen, S.C.A. & Govaert, Y.P.M. (2026). Enige aspecten van balanshedges in de vennootschapsbelasting, Maandblad Belasting Beschouwingen 2026/40.
The New York office is organising a series of webinars to update clients on the latest EU tax developments with respect to tax professionals.
Sebastiaan Claessen
Senior Associate - Tax Adviser
Amsterdam
Dutch, English
<p>Sebastiaan Claessen, tax adviser, is a member of the International Tax Services team. </p>
Sebastiaan is specialized in Dutch and international tax matters with a focus on multinationals active in the energy and financial sectors. He has broad experience in advising clients on cross-border restructurings, M&A, financing and holding structures, as well as on hedge accounting and other corporate tax related matters. Sebastiaan also frequently advises on EU tax developments. He is a member of our Participation exemption knowledge group.
Sebastiaan is a member of our US region team. In 2023 and 2024, Sebastiaan was seconded to our New York office as well as to an American law firm in their offices in Boston, Silicon Valley and San Francisco where he advised US clients on their European matters.