Kernrechtsfrage
Whether the appeal was admissible despite being labeled as a public-law complaint and addressing both federal and cantonal taxes in one filing.
Extrahierter Entscheid
The mislabeled filing was treated as an admissible public-law appeal; one joint appeal was sufficient because the cantonal decision and the legal issue were identical for federal and harmonized cantonal taxes.
Extrahierte Begründung
Under the LTF, the Supreme Court has reform power for both tax categories, and a single cantonal decision is acceptable when the reasoning applies equally to both taxes and the appeal clearly targets both.