• International Taxation
• Structured Finance
  

Working Languages

• English, Dutch, German
  

Admissions

• Netherlands (Advocaat - Amsterdam)
  

Office

• Zug
  

Memberships and Offices

• Dutch Bar Association
• Amsterdam Bar Association
• American Bar Association
• American Foreign Lawyers Association New York (Secretary until June 2001)
• European American Tax Institute (NY chapter president until September 2001; Dutch chapter president as of 2002)
• International Fiscal Association
• Member of the Advisory Board of International Finance & Treasury
• Member of the Advisory Board of International Securitization & Structured Finance Report

Publications

• The Netherlands in International Tax Planning (IBFD, 2005)
• Numerous articles and contributions on Dutch Taxation

Academic Work

• Johann is a frequent speaker at international tax conferences and teaches Dutch tax courses