The ten Southeast Asian economies will announce the formation of an ASEAN Economic Community (AEC) on 31 December 2015. The AEC aspires to deliver an integrated market and production base with the free movement of goods, services, capital and skilled labour. However, member economies are still a long way from achieving an integrated production space as they have not yet fulfilled all the stipulated targets set in the 2007 AEC Blueprint. A possible explanation for the current state of economic integration is the presence of conflicting domestic economic interests in member countries. This paper reviews the literature on this issue and synthesizes main observations from selected country studies examining the nature of these conflicting interests. It concludes by providing key policy recommendations for fostering domestic consensus in the respective countries studied in this special issue so that they may support the implementation of their respective commitments as well as deeper ASEAN economic integration beyond 2015.