Kernrechtsfrage
Whether Zurich had to absorb the loss from Lucerne's private-real-estate costs in the intercantonal tax allocation
Extrahierter Entscheid
Yes. For private real estate, the canton where the other property is located must take over the excess of acquisition costs generated at the main tax domicile if otherwise an allocation loss would arise.
Extrahierte Begründung
The Court refined its double-taxation practice for private property: the prohibition of unequal treatment limits the unlimited taxing power of the real-estate canton. Since private taxpayers cannot carry forward losses or capitalize expense overruns, the excess must be allocated to the property canton to avoid impermissible intercantonal double taxation.