Day 1: Friday 28 August 2026 – Tax Treaty Case Law
08:00 – 08:50
Registration and Welcome Coffee
09:00 – 09:15
Opening RemarksProf. Kees van Raad
09:15 – 10:15
Session 1: Key Themes in Tax Treaty Case Law from the Past Decade: an Interactive DiscussionLokhorst ChurchModerator: Johann Hattingh (Panel members: TBA)
Recent cases from selected countries
Treaty interpretation issues arising from recent case law
Reflections on future developments
10:15 – 10:45
Coffee Break
10:45 – 11:45
Session 2: Key Themes in Tax Treaty Case Law from the Past Decade (Continued)Lokhorst ChurchModerator: Johann Hattingh (Panel members: TBA)
Recent cases, interpretation issues, reflections, and Q&A
11:45 – 12:00
Closing RemarksProf. Kees van Raad
12:00 – 12:40
Lunch BreakLokhorst Church
12:55 – 16:00
SymposiumCleveringa Hall, Law Faculty Building (Steenschuur)Presentations by Malcolm Gammie, Wei Cui, John Avery Jones, and Johann HattinghIncludes the Liber presentation
17:00 – 20:30
Reception & Walking DinnerZoeterwoude Country House (Noord Aa 3a)
Day 2: Saturday 29 August – Recent Developments, ITC Leiden Future, Artificial Intelligence
09:30 – 10:00
Session 3: PE Developments – A Policy PerspectiveLokhorst ChurchPresenter: Kees van Raad
The concept of PE – its past and future
The main types of PE in the current OECD & UN Models
Early court decisions on home office PE
Home office PE in OECD 2012 revised Public Discussion draft on Art. 5
OECD 2025 Update on cross-border working from "home or other relevant place"
10:00 – 10:30
Session 4: Roundtable Discussion – The Future of ITC Alum CommunityLokhorst ChurchModerator: Renata Fontana
Interactive discussion on how to strengthen the ITC alum community in the years ahead
Alum engagement across regions, communication channels, future events and funding
10:30 – 11:00
Coffee BreakLokhorst Church
11:00 – 12:15
Session 5: Artificial Intelligence and TaxationLokhorst ChurchModerator: Roustam Vakhitov
Overview of how Artificial Intelligence is transforming advisory and compliance activities (firms, administrations, inhouse, academia)
Discussion on innovative uses of Artificial Intelligence, content generation, and analytical tools
Practical, policy, and emerging tax implications
12:15 – 12:30
Closing RemarksKees van RaadLokhorst Church
12:30 – 13:30
Lunch BreakLokhorst Church
14:00 – 17:30
Outing ChoiceRowing trip (Countryside or Leiden canals) / Wassenaar Art Museum
18:00 – 22:30
DinnerGrand Café De Burcht (Burgsteeg 14)See accompanying letter for location details
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