Professor Sonneveldt joined the Institute of Private Law on 1 September 2007.

More information about Frans Sonneveldt

Professor Sonneveldt is a Partner at law firm Mazars Private Clients Tax Consultants in the Netherlands, The Hague.

He is a Professor at Leiden University (Department of Notarial Law) and a lecturer in the university's International Tax Programme. As a member of the Moltmaker Committee, he was involved in drawing up a report on the revision of the Dutch Inheritance Tax Act of 1956. He also serves as a Deputy Judge at the Court of Appeal of ‘s-Hertogenbosch.

Professor Sonneveldt was a panelist in a seminar on international estate planning at the 2002 Oslo Congress of International Fiscal Association (IFA). He chaired a seminar on this subject for IFA in Vienna in September 2004 and was the Chair of subject 2 (‘death as a taxable event and its international ramifications’) at the 2010 IFA Congress in Rome.

Professor Sonneveldt is a member of the International Academy of Estate and Trust Law (IAETL) and the Society of Trust and Estate Practitioners (STEP). He was a visiting scholar at Harvard Law School and a guest lecturer at Queens’ College, Cambridge, New York University and the University of Neuchâtel, Switzerland. He is also a lecturer in the Executive Master programme of Advanced Studies in International Taxation at the University of Lausanne, Switzerland. Since 2014, he has been a member of the European Commission's ‘group of experts on removing tax problems facing individuals who are active across borders within the EU’.

Professional authorities

• Anglo-American Trust and other trust-like devices
• Estate Planning including legal and tax advice on last wills, prenuptial agreements, divorces, gifts, emigration and immigration