Ekibimiz

Hendrik-Jan van Duijn

International Tax Partner & CEO

Hendrik-Jan van Duijn

Education

In 1998, Hendrik-Jan was awarded a fully-certified Bachelor’s Degree in Accounting Administration Consultancy. He subsequently studied Tax Law in Leiden. Since 2002, Hendrik-Jan has been a member of the Nederlandse Orde van Belastingsadviseurs.

Career

Hendrik-Jan specializes in Partnership and Dividend Taxation, particularly in cross-border investments, mergers and take-overs, partnerships and industrial restructurings. In 2002, he began working with BDO. 4 years later, in 2006, he moved to PwC. In 2008, he moved to New York to work as a tax consultant. While there, he gave advice to US and Canadian businesses wishing to expand or streamline investments, either in or via the Netherlands, as well as to Dutch companies investing in the US and Canada.

Experience

With more than 15 years’ experience in the area of Dutch Corporate and Dividend Taxation, Hendrik-Jan has built up an impressive record of service. In 2011, he set up Duijn’s Tax Solutions and has seen it grow into a successful taxation consultancy. Hendrik-Jan is also behind the creation of many networks. He is, among other things, co-founder of Doing Business in, a network of specialists in the Netherlands and abroad, and of Pro-tp, through which he, along with his partners, offers international transfer-pricing advice. As a specialist in international Tax Law, he also writes for the IBFD.

Joost de Leeuw

Tax Partner

Joost de Leeuw

Education

In 2007, Joost began studying Law at the University of Amsterdam, having previously studied for his Bachelor’s Degree in Russian Language and Culture. Due to his wide variety of interests, Joost has successfully completed Master’s Degrees in both Criminal and Tax Law. In 2015, he completed his studies with a thesis on participation exemption. Joost is an aspiring member of the Nederlandse Orde van Belastingsadviseurs, which means that he closely follows the latest developments in (international) tax law. He also participates in seminars organized by various bodies, such as the Ministry for Finance, the Chamber of Commerce and the University of Lausanne.

Career

After a short period as a journalist and translator, Joost has found his calling in the legal world. With business in his blood, he has always been attracted to entrepreneurship. During his studies, he was struck by the enormous inequality between the tax possibilities for multinationals and those for SMEs. He feels that this is too disruptive to the markets. Therefore, it is Joost’s ambition to make tax benefits accessible to all entrepreneurs. In this area, he is committed at both a policy and client level. After three years with DTS, Joost is currently working as tax manager and is, among other things, responsible for the Asia Desk.

Experience

“I find the best thing about my job being that moment when a client realizes just how valuable good tax advice can be. The difference between what a company pays in taxation before and after our advice is often much greater than the profit made through a reorganization or an advertising campaign. Thus, tax advice has also added value in a commercial sense and is indispensable in every business plan.”
As a tax consultant, Joost is never doing the same thing every day, because no client is the same. He advises companies and investors in diverse sectors and countries. Applying the innovation box prior to a tech start-up, for example, is completely different to giving transfer-pricing advice to a food importer, but both are nevertheless in the area of partnership taxation.

Jimmy Cox

Tax Partner

Jimmy Cox

Education

Jimmy is a born entrepreneur. In 2011, he began studying Dutch Law at the Radboud University in Nijmegen. He soon discovered that the field of taxation was the one for him. After completing his Bachelor in Dutch Law, he decided to pursue postgraduate studies in Fiscal Law. He was awarded a Master of Law in 2017, specializing in Tax Law. In the meantime, Jimmy has continued to broaden his knowledge, in order to be of even more service to the client. Jimmy is an aspiring member of the NOB.

Career

Jimmy is not only a thinker but a doer. He consequently combined his studies with practical experience, working as a Junior Tax consultant with DTS Duijn’s Tax Solutions. After completing his studies in 2017, he moved to the Eindhoven area. In 2018, he decided to come back to us at Duijn’s Tax Solutions. In his current role as Tax Manager, Jimmy is once again strengthening the DTS team. Driven by his passion for entrepreneurship, he has, along with Hendrik-Jan, decided to open a new DTS branch in Eindhoven. Jimmy himself has responsibility for the running of this new office.

Experience

While he was studying, Jimmy learned what it means to be a good tax consultant: hard work, analytical thinking, and insight into complicated tax problems. His passion for taxation primarily focuses on the taxation side of entrepreneurship: Jimmy gives expert tax advice in the areas of international business, mergers and takeovers. On top of this, he specializes in cryptocurrencies. As well as advising Dutch and foreign entrepreneurs, Jimmy deals with private individual clients.

Rob Zoontjens

Transfer Pricing Partner

Rob Zoontjens

Education

In 2006 Rob completed his studies at Tilburg University. With a background in Fiscal Economics and Controlling, he started a specialization program that resulted in his accreditation by the NOB and extensive international training in the field of transfer pricing.

Career

After studying Fiscal Economics and Controlling, Rob discovered the perfect overlap of both disciplines within PwC’s transfer pricing department. For more than ten years, he refined his expertise as a transfer pricing consultant. Rob then moved to an internal position as Transfer Pricing Director at the world’s largest producer of generic medicines. In this capacity, he oversaw numerous transfer pricing aspects for numerous entities in no less than 37 countries. In 2018, Rob founded his own consulting firm, with a focus on advising medium-sized and large multinational companies. He has been with DTS since the beginning of 2023.

Experience

After many years of experience as a transfer pricing planning consultant and in-house expert, Rob has in-depth knowledge of value chain transformations, supply chain planning, transfer pricing optimization, legal disputes, and compliance projects.
With his technical knowledge and practical experience, he excels in developing robust strategies and work plans for global enterprises. For example, he skillfully navigates the complexities of multinational compliance projects, ensuring that the complexities of the different countries involved are expertly managed throughout the process.

Kim Sinnige

VAT Partner

Kim Sinnige

Education

In 2001, Kim completed her Fiscal Economics training at the Hogeschool voor Economische Studies (HES) in Amsterdam. She subsequently studied Fiscal Law in Leiden. Upon completion of her studies, she specialized further through the Nederlandse Orde van Belastingsadviseurs (NOB or Dutch Association of Tax Consultants).

Career

Before completing her studies in Amsterdam, Kim began her career as a VAT consultant with Deloitte. 9 years later, Kim became a partner at A. Sinnige Administratiekantoor. At the same time, she set up her own consultancy firm, Sinnige Btw-Advies. Since then, Kim has seen her business develop into a successful consultancy firm. Along with this, she writes advice for Indicator BV and Kluwer Avanzer. Since 2014, Kim has been working with DTS.

Experience

Kim is an experienced all-round VAT advisor. She specializes in, among other things, VAT advice in the areas of international trade and financial services, real estate, education, healthcare, and sports. On top of this, she deals with national and international VAT registrations and VAT returns, and writes for diverse trade magazines.

Wefa Ismail

Tax Advisor

Wefa Ismail

Education

In 2015, Wefa started her studies in Law at Radboud University in Nijmegen and subsequently pursued a Master’s degree in Tax Law. She also delved into Transfer Pricing and completed various courses in this field.

Career

In 2020, Wefa began her career as an intern at DTS Duijn’s Tax Solutions. After her internship, she joined the company as a paralegal and was later promoted to Junior Tax Advisor. During this period, she also assisted with several incorporations at our partner company, Company NL.

Experience

Currently, Wefa is an invaluable asset to our DTS team in Amsterdam – specializing in Transfer Pricing and focusing her work on the tax implications of protective levies and 30% scheme procedures. She thrives on tackling complex issues, always up for a challenge, and never backing down from testing her skills. Wefa has become an integral part of the team – contributing her expertise to ensure successful outcomes. She finds great satisfaction in her work and the results it yields.

Serkan Yilmaz

VAT Advisor

Serkan Yilmaz

Education

Career

Experience

Lotte van Wessel

Junior VAT Advisor

Lotte van Wessel

Education

Lotte started the Dutch Law education at Radboud University Nijmegen in 2019 and obtained her propaedeutic degree in 2020. After her bachelor degree, she is planning to focus on the Master’s in Tax Law.

Career

In 2021, Lotte started as an intern at DTS Duijn’s Tax Solutions(DTS). During her internship, she found her interest in the Sales Tax. After her internship at DTS, she started working as a Tax Intern at DTS Fiscal Representative with a focus on VAT-related matters.

Experience

During her studies, Lotte noticed that her passion leads to providing practical support in legal matters. Lotte can come up with different roads for the cases and give a various solutions for a projects she is working on. That represents her as an open-minded professional, without losing view of the big picture. These components can combined to successful work at DTS. With a no-nonsense mentality, result-oriented and practical attitude, Lotte can provide a great assistance on the client cases and provide the tax support on a various topics.

Joe Franssen

Junior Tax Advisor

Joe Franssen

Education

Joe started his academic journey by enrolling in the MBO-Legal Administrative Assistant program in 2017. Building on this foundation, he pursued a degree in HBO-Finance, Tax, and Advice at the Hogeschool van Arnhem, commencing in 2019. In 2022, Joe completed the minor “Fiscal advisor of the future in combination with applied Business Analytics & Innovation” adding a cutting-edge dimension to his expertise. The finalization of his academic journey occurred in 2023, with the completion of his Bachelor’s degree in HBO-Finance, Tax, and Advice.

Career

In January 2022, Joe initiated his professional career, aligning his passion for taxation with practical experience. Currently, Joe holds the position of Head of Personal Income Tax at DTS. He collaborates closely with senior professionals on Corporate Income Tax matters. Joe is committed to providing professional services, ensuring a comprehensive approach to their fiscal needs.

Experience

With a tenure of two years at DTS, Joe has actively contributed to the dynamic landscape of tax compliance. His responsibilities extend to providing invaluable support to seniors, demonstrating versatility in handling a spectrum of fiscal matters. His dedication to making tax compliance accessible and comprehensible underscores his commitment to the success of both DTS and its clients.

Jiri de Groot

Junior Tax Advisor

Jiri de Groot

Education

Jiri began studying Law at the University of Amsterdam (AUAS) in 2019. He minored in “Legal Problems In A Digital Society” in 2021. He graduated with a Bachelor’s degree in 2023.

Career

In February 2022, Jiri came in at DTS as an intern and his interest in the fiscal world has since been sparked. During his time at DTS, he is constantly broadening his understanding of tax law, so he can provide clear advice to the clients of DTS and efficient assistance to our seniors.

Experience

Jiri has been building his resume at DTS for over a year now and is committed to making tax compliance as understandable and accessible as possible. Jiri’s work is causally related to the diverse work of the seniors of DTS due to him providing assistance to them. This means that Jiri’s work varies from day to day and that he can assist our clients with matters across the entire fiscal spectrum.

Monique Visser

Office Manager

Monique Visser

Education

After graduating from VWO, Monique completed the HBO study in Real Estate o/g in 2002.

Career

After several wanderings in financial services and HR, Monique started working as Office Manager.

Experience

In her role as Office Manager, Monique has gained a lot of experience over the years, assisting us as much as possible in our daily work.

Monica Tanase

Business Development

Monica Tanase

Education

Monica began her educational journey with a degree in marketing and sales, which fueled her enthusiasm for business growth and development. She is currently pursuing an MBA programme, where she is dedicated to deepening her knowledge of global business strategies and leadership. This journey underlines her commitment to lifelong learning and her pursuit of excellence in her professional life.

Career

Monica has accumulated experience in developing strategic partnerships and expanding market reach across the globe. She currently serves as a Business Developer at DTS Duijn’s Tax Solutions, where she builds on her experience by facilitating growth and success for both local and international businesses.

Experience

At DTS, Monica has made connections with experts both within the Netherlands and internationally. Her work focuses on connecting/networking with experts to provide the most informed and effective service for the customers.

Temas etmek

Amsterdam – Kleine-Gartmanplantsoen 21
Arnhem – Willemsplein 34
Nederland

DTS Duijn’s Tax Solutions B.V.
Bank: Rabobank
BIC: RABONL2U
IBAN: NL64RABO0167742167