Concessional Financial Flows Among Southern Countries: Conceptualizing Design Principles, Operational Modalities and Assessment Framework - The international development community recognises the importance of SSC in the context of mobilising much-needed finance for development across the global South during the post-2015 period. Emerging Southern countries’ abilities to contribute in this manner are evidenced by their gradually increasing shares in global gross domestic product, foreign direct investment, trade and remittances as well as deeper integration with developing countries that includes providing assistance through financing and technical expertise. However, no consensual definition or common assessment framework for SSC exists. This paper seeks to present the collective knowledge on the challenges for SSC and assess the concessional aspect of Southern financial flows through rigorous analysis of existing trends in SSC and the multifaceted nature of SSC flows.