Kernrechtsfrage
Whether the declared value-increasing investments in co-ownership were properly assessed for property gains tax
Extrahierter Entscheid
The cantonal court’s fact-finding was incomplete because it did not establish which portion of the overall investments of all co-owners was included in the declared half-share acquisition costs.
Extrahierte Begründung
In mixed assessment proceedings the authorities must investigate ex officio. Without clarifying the allocation of investments among co-owners, it cannot be determined whether the halving of declared costs reflected the proportional co-ownership allocation or an unjustified reduction.