From an early stage, Henk van Duijn shared his love for number-crunching with his son Hendrik-Jan.  As a result of this mutual passion, the two decided to go into business together.  Since then, DTS has grown into a dynamic team of highly-educated specialized tax advisors who are up-to-date with the latest developments in their field.  As a unit, we are ready to answer the queries of our national and international clients;  from Amsterdam to New York and Singapore.


What are we proudest of?  Our enjoyable collaboration with our clients.  In the last few years, we have built up strong and long-lasting relationships based on personal contact and trust.  Because of our personal service and expert knowledge in international tax advice, we have become a household name from students to CEOs.


Fiscal law is constantly changing.  We have extensive experience with complex issues and think that it is important to surprise our clients with inventive solutions.  In so doing, we do not limit ourselves to stop-gap solutions, because we believe that these are of little value to you in the long term.  Naturally, you wish to see your company remaining healthy and continuing to make a profit, even after changes in tax legislation.

Our team

Our advisers are pleased to help you.

Do not hesitate to contact us for more information.

Hendrik-Jan van Duijn

International Tax Partner & CEO

Joost de Leeuw

Tax Partner

Jimmy Cox

Tax Partner

Kim Sinnige

VAT Partner

Wefa Ismail

Tax Advisor