Samuel Vanthienen

Director, Tax Dispute Resolution | Income Tax | Where legal meets business

Who I Am

I am a Director in the Tax Dispute Resolution Team, specializing in income tax matters. With over 13 years of experience in handling tax audits and disputes, I support clients ranging from multinational corporations to private individuals in navigating complex national and cross-border tax issues. I am active at our Zaventem office.

What I Do

  • Focus on corporate income tax, withholding tax and financial tax matters
  • From risk assessment and assisting clients in tax audits to administrative proceedings and litigation before tax courts, including the Constitutional Court and the Court of Cassation
  • Cross-border tax controversies, with a strong focus on transfer pricing audits and disputes

Who I Work With

  • Global and local corporations across industries
  • Financial institutions facing complex tax challenges
  • Private clients 

My Approach

My practice combines deep technical expertise with a pragmatic, solution-driven mindset. I guide clients through both preventive strategies and contentious procedures, helping them achieve clarity and resolution in an often complex and high-stakes tax environment.

Credentials & Leadership

  • KU Leuven, Master of Laws, 2011
  • Ghent University, Master of Laws – Tax Law, 2012
  • Author of several publications on tax controversy topics
  • Brussels Bar, since 2015

Why Deloitte Legal

At Deloitte Legal, I bring together my litigation and advisory expertise with Deloitte’s multidisciplinary tax capabilities. This enables me to deliver comprehensive and coordinated solutions for clients in both domestic and international tax disputes.