The study’s objective aims to (i) identify options for increasing operational finance for solid waste; specifically organic waste and plastic pollution management to improve sustainable operational finance; (ii) identify and develop practical financing structures for private sector investments and climate funding for investments and operational finance; and (iii) define and test implementable financing arrangements for lower income countries (LICs)/lower middle income countries (LMICs)/middle income countries (MICs) which can be supported by international finance agencies with focus on replicability and scalability.The scope of work is divided into key parts: (i) current modes of financing; considerations and (policy) options to mobilize (operational) finance for improvement of solid and plastic waste management; (ii) opportunities for and examples of public-private structuring; traditional and environmental policy instruments to support improved waste and plastic management; (iii) increasing role of carbon financing in the waste sector to reduce methane emissions from waste and possible financing options from a global treaty on plastics that is under negotiation; and iv) lessons learned; recommendations and indicative roadmaps for four country case studies for integrated financing approaches for both the investments as well as the operational costs to support scalable; replicable and bankable solid waste and plastic management investment projects.This main audiences of the report and knowledge papers are local governments; national governments as well as development and international financing partners and their interest in bankable; replicable and scalable solid waste and plastics investments.The report will include evidence-based examples of regulations; policies; instruments; financing/fiscal arrangements and practices specifically targeting LICs and MICs to increase financial resources towards plastics and waste management; collection and minimization and recovery/recycling; where available with examples for specific policies to improve organic waste minimization; diversion; treatment.