Questione giuridica chiave
Whether the complaint alleging intercantonal double taxation was admissible despite no prior cantonal final ruling on tax domicile.
Decisione estratta
The complaint was admissible, but the taxpayer had forfeited the right to a prior domicile decision by failing to request it timely.
Motivazione estratta
The company knew or had to know that Zurich still claimed taxing power; it acted inconsistently and could not rely on the lack of a formal preliminary decision.