50Moreover, while the simplification of administrative obligations burdening flat-rate farmers is indeed one of the objectives pursued by the flat-rate scheme for farmers, the goal of simplification cannot justify the introduction of an exemption which is not provided for by the VAT Directive (see, to that effect and by analogy, Case C-128/05Commission v Austria [2006] ECR I-9265, paragraph 25). That is reinforced by the fact that the objective of simplification must, in the present case, be reconciled with the objective of offsetting the input VAT borne by the farmers concerned, which necessarily implies that a minimum of administrative obligations are imposed on flat-rate farmers, inter alia, in order to collect the data required for the determination of the applicable flat-rate compensation percentages.