Loyens & Loeff

Mark van Casteren

Visitors address

Fred. Roeskestraat 100
1076 ED Amsterdam
The Netherlands

Mark van Casteren

  • Tax adviser
  • Partner

Mark van Casteren is a tax partner in the Amsterdam offices of Loyens & Loeff. He is a member of the International Corporate Tax Practice Group.

Mark studied tax law at the University of Amsterdam where he obtained his degree in 1990. In 1991, he participated in an LLM tax program at Emory University, Atlanta Georgia, studying US corporate income tax and Taxation of pass through entities.

In 1992, Mark joined Loyens & Volkmaars, the tax law firm which merged with Loeff Claeys Verbeke to become Loyens & Loeff in 2000. Soon after becoming a partner of the firm in 2001, he moved to the US to head the Loyens & Loeff office in New York until the fall of 2005. Since then, Mark has practiced from the Amsterdam Loyens & Loeff office again.

Mark’s practice is focussed on North American clients. He has wide experience in structuring international acquisition and financing transactions of US based private equity funds and US and Canada based multinationally operating enterprises, specifically Canadian mining groups and US (bio)pharmaceutical companies. Mark advised many North American groups (including various US pharma companies) on how to set up their European business. He also frequently advises on tax efficient restructurings of multinationally operating enterprises.

Mark frequently lectures on international tax and M&A issues. He is a member of the International Fiscal Association (IFA), the International Bar Association (IBA), the American Bar Association (ABA) and the Dutch Association of Tax Advisors (NOB).


Tax law, University of Amsterdam, 1990
Participation in programme on US Corporate Income Tax and Taxation on Pass Thru Entities, Emory University, Atlanta Georgia US, 1991


Dutch, English