Together with Jeroen Perebooms I founded Apertas. Apertas helps executives of multinational companies to understand how (international) tax issues affect their 'day to day' business decisions. They will better understand issues the tax team or the advisors are coping with, and, as a consequence, create more effective business operations. Executives who want to understand how international tax issues affect the company's reputation, will undergo a program which makes them aware of issues, discussions, solutions and ways to deal with these.Our approach is with an open (aperta) view and a clear (apert) focus on tax issues. More information at www.apertas.org

Professor in Dutch Corporate Income Taxes, Principles of Corporate and International Taxation and International Tax Policy.