This article seeks to critically analyse the European Commission's Proposal for a Council Regulation on jurisdiction, applicable law and recognition and enforcement of decisions in matters of matrimonial property regimes (COM (2011) 126). It focuses upon the coordination of the Proposal's provisions on jurisdiction and applicable law with the parallel provisions contained in other related EU private international law instruments, namely those relating to divorce (Brussels II bis and Rome III) and succession (Succession Regulation). In doing so, the article adopts a 'stress-test' approach, presenting scenarios in which interaction between these related instruments takes place. The compositions and circumstances of the fictitious couples in these scenarios are varied in order to fully illustrate the potential consequences of the interplay between the instruments. This article seeks to assess the extent to which (in)consistency exists between the current and proposed EU private international instruments and, by evaluating this interaction through a number of norms, how identified inconsistencies impact upon international couples' legal relationships. In order to ensure the analysis remains as up to date as possible, the article will also take into account relevant changes introduced in the latest revised versions of the Proposal.