Contact Ton Tuinier

Ton Tuinier Member of the Executive Board

Year of birth: 1960
Nationality: Dutch

Every organisation plays a certain role in society and the same applies to Mazars. I believe it is important for our firm to make a contribution to a sustainable society in every respect. Inspired by my job and personality I consider the aspects we can make even more professional in our firm and the way in which Mazars can contribute to society and its clients. With that social involvement you can develop new, valuable things.

Education and work experience

  • HES Utrecht, Economics and Law
  • Academy of the Dutch Federation of Tax Advisers
  • Executive Master of Business Administration (MBA)

After completing my studies I started as a tax adviser with Mazars. I have been a partner since 1996. In my role as partner and tax adviser I focus on corporate and international businesses that are faced with wide-ranging national and international tax and legal issues. I'm also closely involved with developing our employees in a personal and professional sphere.


Besides advising and supporting clients, I believe it is important to make a contribution to developing our firm and our employees. Therefore I have been a member of the Executive Board of Mazars Nederland since 2008 and I was Deputy Chairman from 2012 to 2014. I've been Chairman of the Executive Board since 2014. In this role I am dedicated to creating a successful, but above all sustainable firm, within our role in society.

Specialised experience

As a tax adviser I have comprehensive experience of wide-ranging corporate and international tax assignments. My expertise is in issues in the area of transfer pricing, mergers and acquisitions, and restructuring.

Besides my activities for Mazars Nederland, I also played an active role within the Mazars Group as Global Tax Leader. In that role I made a contribution to developing the international tax practice of the Mazars Group, making it even more professional.

Specific client experience

My clients include corporate and international organisations that are faced with national and international tax and legal issues. I focus on organisations that operate in the financial sector (trust offices, insurance companies), the hotel industry and trading companies.

Other positions

I'm socially involved through my role within Mazars, but I'm equally involved on a personal level. I am a Board member of a Dutch charity. I'm also a member of the Supervisory Board of Kontext Welzijn en Maatschappelijke Dienstverlening in Haarlem. In this way I hope to make a valuable contribution to society as a human being.

Would you like to know more about me or what I could do for you? Please contact me by e-mail or call +31 (0)88 277 24 00. Please feel free to visit my LinkedIn profile or Twitter.

Curriculum vitae