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MARNIX VAN KEIRSBILCK

Of Counsel Brussels Bar Association

Marnix Van keirsbilck (1960, Ostend) obtained a Master of Laws (KULeuven, 1983) and a Master of Economics (KULeuven, 1985) with great distinction and an LL.M (Master of Laws) from Harvard Law School (1986).

Marnix Van keirsbilck has worked as a tax lawyer since 1986, first in the United States (1986-1991) and then in Belgium (1991-present).

Career in the United States:

  • Washington D.C.: Cole, Corette & Abrutuyn (1986-1987).
  • San Francisco/Palo Alto: Baker & McKenzie (1987-1991), focusing on international taxation.
  • Member of the State Bar of California since 1988 (currently no longer an active member).

Career in Belgium:

  • Linklaters (1991-1996).
  • Partner at Dumon, Sablon & Vanheeswijck, where he worked for nearly 30 years in the areas of corporate tax, international taxation, “executive compensation,” and the taxation of M&A (advice, litigation, and ruling applications).

Marnix Van Keirsbilck has expertise in corporate tax, international taxation, “executive compensation,” and the taxation of M&A, including advice, litigation, and ruling applications. He joined the firm in 2024 as “of counsel” and is a member of the Brussels Bar Association, IFA (International Fiscal Association), and BATL (Belgian Association of Tax Lawyers).

Publications
Marnix Van Keirsbilck has published in:

  • De Fiscale Koerier.
  • Tijdschrift voor Fiscaal Recht.
  • Algemeen Fiscaal Tijdschrift.
  • Intertax.

He has also contributed to several books on international taxation, including on double taxation treaties with the Netherlands and the United States.

Recognition
Since 2011, he has been listed in the Lexology Index (formerly WWL (Who’s Who Legal)) as “one of the leading practitioners” in Belgium in the areas of:

  • Corporate Tax – Advisory.
  • Corporate Tax – Controversy