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Our consultants

CourtLane Consultancy

D.A. ten Cate

Diederik is a tax consultant with extensive knowledge of (inter)national tax law. He has extensive experience and knowledge to provide tax, legal and financial solutions to entrepreneurs; not only focused on the business, but also on private situations.


He graduated in civil law from the University of Rotterdam (1991), in tax law from Leiden University (1993) and in International and European tax law from the University of Rotterdam (1994).

Diederik started his career in 1991 at Coopers & Lybrand (PWC) as an international tax consultant. In 1996 and 1997, he was seconded to the London office to set up the liaison branch between the English and Dutch firm. In 1998, he moved to KPMG Meijburg & Co as an international and domestic tax advisor. In 2004, he joined a local boutique firm in Rotterdam and started his own firm in 2007, which is one of the founders of CourtLane.

Diederik is a member of the Dutch Association of Tax Advisers (NOB). He is fluent in Dutch and English and has a basic knowledge of German and Spanish.

Diederik A. ten Cate

D.A. ten Cate

Fred D. Piet

Fred is an international business and tax consultant for both high net worth individuals and international corporations. He has a broad knowledge of tax planning, corporate reorganisation and asset protection schemes. In particular, Fred has extensive experience and knowledge in providing Italian and Swiss clients with innovative and practical tax planning solutions for international activities. To work closely with these clients and maximise his impact, Fred works partly from Lugano (Switzerland).



Fred started his career at Deloitte (1982) and moved to the Italian-speaking part of Switzerland in 1987, where he joined the headquarters of the Fidinam Group, a major international consulting firm, in Lugano (Ticino). He has extensive work experience in international corporate restructuring as an active participant in the pre-IPO restructuring of a world-famous fashion brand and an airline, as well as the overseas mergers of listed pharmaceutical companies.

He is fluent in Dutch, Italian, English and German and has a basic knowledge of French and Spanish.

F.D. Piet
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