Questione giuridica chiave
Whether the municipalities could invoke municipal autonomy when deciding on the insurer's subjective liability for ground tax.
Decisione estratta
No. St. Gallen law leaves no relatively significant decision-making freedom to the municipalities on whether ground tax must be levied from a given taxpayer.
Motivazione estratta
The cantonal rules uniformly define tax object, taxpayer and tax base; municipalities merely set the rate within narrow limits. That is insufficient for protected autonomy in this area.