This chapter explores financing mechanisms for advancing circularity in manufacturing and sustainable industrial processes, with a particular focus on small and medium-sized enterprises (SMEs). It highlights the limitations of traditional finance models, which often undervalue long-term benefits, struggle with circular asset valuation, and fail to support collaborative, system-level transitions. The chapter examines innovative tools such as equipment leasing, tailored asset-based lending, and innovation grants, alongside cluster financing models that enable industrial symbiosis. It also emphasizes the role of ESG integration in shaping investment decisions and aligning financial flows with circular economy objectives. By addressing financing gaps and proposing tailored instruments, the chapter demonstrates how financial institutions can drive the transformation of manufacturing toward resilience, sustainability, and inclusive growth.