Question juridique clé
Whether the public law appeal against the interlocutory tax-residence decision was admissible.
Solution extraite
The appeal was admissible; the challenged decision determined fiscal domicile and could be attacked directly for intercantonal double taxation.
Motifs extraits
The Court held that such preliminary assujettissement decisions are directly challengeable, and the appellant's concise reasoning sufficiently invoked the constitutional ban on intercantonal double taxation.