Key legal question
Whether Art. 12 ELV allows only the basic cantonal rule for determining rental value or also tax-law reductions for self-occupied property.
Extracted holding
Art. 12 ELV incorporates only the cantonal basic rule for fixing rental value; tax-law reductions and hardship relief do not apply in EL calculations.
Extracted reasoning
Using the reduced tax rental value would privilege owner-occupiers and create unequal treatment of tenants, owners who rent out property, and EL claimants across cantons. EL law serves subsistence protection, not housing promotion or tax equity.