Kernrechtsfrage
Whether the tax authorities violated the right to be heard by joining and using files from related proceedings and by refusing further evidence.
Extrahierter Entscheid
No violation of the right to be heard was established; the file use and evidentiary handling were permissible.
Extrahierte Begründung
The taxpayer was informed of the relevant findings and had enough opportunity to respond. The court could rely on anticipatory evidence assessment because the decisive point was the correct legal characterization of the payment.