Kernrechtsfrage
Whether the tax authority decisions were valid enforcement titles for definitive legal opening.
Extrahierter Entscheid
Yes. The tax assessment, reminder and default-interest invoice were decisions of a Swiss administrative authority and could support definitive legal opening.
Extrahierte Begründung
Under Art. 80 SchKG, definitive legal opening is granted for enforceable judicial or equivalent administrative decisions. The tax office acts as the executive organ of the cantonal finance department; UID/DUNS references do not turn it into a company.