This Regulation lays down the criteria for calculating the additional costs incurred during the eligibility period defined in Article 63(2) of Regulation (EU) 2021/1060 by operators in the fishing, farming, processing and marketing of certain fishery and aquaculture products from the Union’s outermost regions, referred to in Article 349, first paragraph, of the Treaty on the Functioning of the European Union, due to the specific handicaps of those outermost regions.