Question juridique clé
Whether the dispute over reimbursement of withholding tax is a civil-law dispute within the jurisdiction of the civil courts.
Solution extraite
Yes. The plaintiff asserts contractual claims from an alleged mandate; public-law questions on withholding-tax recourse may be examined incidentally by the civil court.
Motifs extraits
The civil court may decide prejudicial public-law issues when resolving a private-law contractual dispute. The existence of Art. 14 VStG does not transform the private dispute into a public-law matter, especially absent a final administrative decision binding the parties.