Questão jurídica principal
Whether VAT must be included in the turnover base used to calculate the concession commissions
Decisão extraída
The term 'turnover' in the concession, as interpreted under the trust principle, covered annual gross receipts without deducting taxes, so VAT was included.
Fundamentação extraída
The court upheld the cantonal court's interpretation that the 1993 amendment did not materially change the calculation method and that the contractual wording referred to gross annual turnover. The appellant's contrary interpretation was not shown to be arbitrary.