ITR World Tax has published the 2025 rankings based on its annual research and recognize GSK Stockmann as “recommended firm” with practice and individual mentions in their new edition.
The following practice categories are ranked by ITR World Tax:
- General corporate tax – Tier 3 of 4
- Transactional tax – Tier 2 of 3
In addition, Mathilde Ostertag is named as “Highly Regarded Practitioner”.
The rankings underline the strength of the tax practice at GSK Stockmann in Luxembourg.
The full results are available at ITR World Tax 2025.
The ITR World Tax rankings provide a comprehensive guide to the world’s leading tax and transfer pricing firms and leaders, reviewing entries from over 140 different jurisdictions. The guides are produced using the following three foundational pillars of research: Client feedback, practical evidence and peer feedback.
