Questione giuridica chiave
Whether Solothurn transitional rules allowing deduction of all actual property maintenance costs in 2000 comply with federal tax-harmonization law.
Decisione estratta
The cantonal rule was contrary to federal law; only actual maintenance costs exceeding the lump-sum deduction could be additionally deducted.
Motivazione estratta
Art. 69 StHG permits only extraordinary expenses, namely maintenance costs exceeding the flat-rate deduction. A cantonal rule allowing every actual maintenance cost in the transition year, even below the flat rate, departs from mandatory harmonization and creates unjustified unequal treatment.