Questione giuridica chiave
Whether the federal appeal for intercantonal double taxation was admissible and could also attack the already final Bern domicile decision.
Decisione estratta
Yes, the double-taxation complaint was admissible without exhausting cantonal remedies, and the final Bern domicile decision could be reviewed together with the Zurich decision.
Motivazione estratta
For double-taxation complaints, cantonal remedies need not be exhausted; the second canton's appeal permits review of the first canton’s final decision as well.