Question juridique clé
Whether the federal constitutional complaint against the Bern tax domicile decision was admissible.
Solution extraite
Yes, the complaint was admissible as a direct challenge to a preliminary tax domicile decision in a double-taxation context.
Motifs extraits
A tax domicile ruling may be attacked directly before the Federal Supreme Court for breach of Art. 127(3) BV without exhausting cantonal remedies; the already final Solothurn assessment could also be challenged with that complaint.