• Doctor of laws – University of Liège (2007)
  Dissertation: Contribution à l’étude de la notion d’impôt en droit belge. Contours, singularité et utilité d’un concept juridique (Contribution to the study of the concept of tax under Belgian law. Outlines, particularities and usefulness of a legal concept)
• Master of laws – University of Liège (1998)
• Bachelor of laws – University of Liège (1995)

University of Liège

• Tax Institute (centre for interdisciplinary research in taxation and public finance)
  President
• Jury for the master’s degree in tax law (“general taxation” and “customs and excise” sections)
  Director and chairperson
• Interuniversity certificate in public finance from UCLouvain and the University of Liège
  Co-head
• University certificate in customs and excise duties
  Academic director
• Board of Studies for the bachelor of laws and master of laws
  Chairperson

International Centre of Research and Information on the Public, Social and Cooperative Economy  (CIRIEC International)
Member of two research committees

• Cooperative and social economy
• Public companies/services

International Centre of Research and Information on the Public, Social and Cooperative Economy  (CIRIEC International)
Chairperson of the Scientific Council of the Belgian Section 

Estate Planning Skill Group (EPSG)

International Fiscal Association (IFA)

Customspliance (an international non-profit association)

“Marjolin” research group

Member

“Lus Commune” research group

Commission Royale Droit et Vie des Affaires (CRDVA)

PRD-ARES (development-oriented research project on the financing of universal health coverage in Bénin)

Partnership between the University of Liège and the Protestant University in the Congo

Various advisory activities for doctoral programmes and participation in thesis committees and/or PhD juries (Democratic Republic of the Congo, Burundi, Sénégal, Bénin and Niger)

Editorial activities

• Founder and editor in chief of the Revue de fiscalité régionale et locale (R.F.R.L.), quarterly journal, published by Larcier, peer reviewed (since April 2012)
• Member of the editorial board of the journal Fiscale jurisprudentie-Jurisprudence fiscale (F.J.F.) (since 2009)
• Member of the editorial board of the Revue générale du contentieux fiscal (R.G.C.F.) (since 2009)
• Member of the editorial board of the Recueil général de l’enregistrement et du notariat (R.G.E.N.) (since 2009)
• Member of the editoral board of the Revue de la Faculté de droit de l’Université de Liège (since 2012)
• Member of the editorial board of the weekly journal Fiscale Actualiteit (Kluwer) (since September 2021)
• Member of the editorial board of the weekly journal Actualités fiscales (Kluwer) (since September 2021)
• Member of the scientific board of the interdisciplinary journal of the IWEPS Dynamiques régionales (since 2013)
• Co-editor of the Tax Institute collection published by Larcier and Anthemis (since 2011) (with I. Richelle)
• Academic director of the French edition of Recueil de législation - Droit fiscal, Moncode.be, Knops publishing, two annual volumes
• Academic director of the annual publication Code La Charte 5 – Droit fiscal (with I. Richelle)
• Academic director of the annual publication Codes La Charte 2A et 2B de droit constitutionnel et de droit administratif (with C. Behrendt, P. Lewalle, M. Pâques and JC Scholsem)