Updated September 28, 2026
Around Mulhouse, Saint-Louis and the Sundgau, cross-border workers employed in the Basel region often took out Swiss franc mortgage loans with regional banks. Many of these contracts contain indexation clauses whose transparency can be challenged.
The firm analyzes the contract and the pre-contractual documents, then decides on the strategy: action on the merits, negotiation, or appeal against a decision already handed down.
Disputes fall in particular within the jurisdiction of the Judicial Courts of Mulhouse, Colmar and Strasbourg, and on appeal of the Colmar Court of Appeal.

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Rulings obtained by DANA Avocats
In this jurisdiction, the firm has obtained the following decisions annulling Swiss franc loans granted to cross-border workers:
© ERIC – stock.adobe.com- June 27, 2025Crédit Mutuel Sud Alsace Territoire (formerly Porte d’Alsace)
- June 27, 2025Crédit Mutuel Rhin Jura
- October 10, 2025Crédit Mutuel Sud Alsace Territoire
- February 24, 2026Crédit Mutuel Sud Alsace Territoire
- July 10, 2026Crédit Mutuel (two judgments)
- September 8, 2026Crédit Mutuel
- July 10, 2026Crédit Mutuel
- July 9, 2026CIC Est
Each case remains subject to the court’s assessment. See all rulings obtained →
See also our frequently asked questions.