International Tax Lawyers
Independent by design. International by culture. Tailor-made by principle.
Why Sumerson?
Niche Expertise
Exclusively focused on international tax law, with deep bilateral France–UAE knowledge that large multidisciplinary firms cannot match.
Dual Presence
Established in both France and the UAE, providing on-the-ground insight into regulatory environments on both sides of the corridor.
Tailored Approach
Every engagement is bespoke. We build structures and analysis tailored to your specific situation, objectives and timeline.
Partner Network
A trusted network of specialist partner firms spanning Europe and the whole world ensures seamless multi-jurisdictional coverage for any cross-border mandate.
Our Origins
Where It All Began
After years leading tax departments at top-tier international law firms, the founders of SUMERSON launched the firm in 2019 with a clear conviction: businesses navigating cross-border tax challenges deserve a dedicated, agile alternative to large multidisciplinary firms. As specialists in international tax structuring with deep expertise in US, Swiss, UAE and French tax matters, they built a firm to combine the rigor of leading practices with the responsiveness and flexibility of a boutique.
In 2024, SUMERSON expanded to the UAE as a natural step to serve clients where they operate most, becoming one of the first international tax law firms in the region, a move that perfectly illustrates the firm's agility.
Ready to Structure Your Cross-Border Operations?
Start with a confidential general pre-assessment to help us understand your global situation. You can also find more specific pre-assessments in the expertise page.
