Pires, AnaMartinho, GraçaRita RibeiroMafalda MotaLuís Teixeira2025-06-022025-06-022015-12Pires, A., Martinho, G., Ribeiro, R., Mota, M. and Teixeira, L. (2015) Extended Producer Responsibility: A Differential Fee Model for Promoting Sustainable Packaging. Journal of Cleaner Production, 108, 343-353. https://doi.org/10.1016/j.jclepro.2015.07.0840959-6526http://hdl.handle.net/10400.8/13053Acknowledgments This work was performed within the PoVeRE project and was financed by Sociedade Ponto Verde, S.A., for which the authors express their gratitude.Extended producer responsibility in the European Union has been shown to be incapable of promoting environmentally friendly packaging, mainly because of the economic instrument used: the producer fee. To make the producer fee capable of both reflecting and influencing how packaging is produced, we propose a mathematical model for calculating a differential fee (the sustainable producer fee or SPF). The development of the model involves the following steps: the selection of sustainability criteria, the aggregation of criteria using multi-criteria decision making, the formulation of the SPF calculation, and the generation of a web-based interface for packers and product importers to calculate the differential fee applying to their own packaging.engLife cycle assessment impactsEnvironmental informationAnalytical hierarchy process (AHP)Technique for order preference by similarity to an ideal solution (TOPSIS)Sustainable packagingSustainable producer fee (SPF)journal article10.1016/j.jclepro.2015.07.084