Section IIA of Chapter II of Title II of Part II of Regulation (EC) No 1234/2007 inserted by Regulation (EU) No 261/2012 of the European Parliament and of the Council contains rules on producer organisations and their associations in the milk and milk products sector, in particular with respect to their recognition and contractual negotiations. Those rules need to be supplemented as regards the conditions for recognising transnational producer organisations and transnational associations of recognised producer organisations, clarifying the responsibility of the Member States involved and, while respecting the freedom of establishment, ensuring that the applicable rules are those of the Member State where a significant share of the activities of such organisations or associations takes place.

In addition, rules should be laid down relating to the establishment and the conditions of administrative assistance to be given in the case of transnational cooperation. Such assistance should in particular include the transfer of information that would allow the competent Member State to assess whether a producer organisation or association of recognised producer organisations complies with the terms of recognition. Such information is necessary to allow the competent Member State to take action in case of non-compliance.

Additional rules should be laid down regarding the calculation of the volume of raw milk covered by the negotiations between recognised producer organisations and processors or collectors of raw milk. To take into account the seasonal variability of milk production, the calculation should compare the milk volume covered by the negotiation for the time period of delivery with the estimated volume of milk production representative for that period, to assess compliance with the maximum ceilings laid down in Article 126c of Regulation (EC) No 1234/2007,