The Franco-German Convention signed on the 4th of February 2010 creates a new optional matrimonial property regime that can be elected by spouses and that is subject to the same provisions in both countries. With regard to its content, the property regime is not a fundamentally new concept, instead joining elements of the German default property regime and the French optional property regime of a community of accrued gains in a quite successful manner. The implementation of elements of the French legal system, which generally places a stronger emphasis on rights in rem, improves the just participation of the spouses compared to the German regime that is rather focused on practicability and legal certainty. On the other hand, the new optional property regime seems more suitable for application in practice than the French property regime, which – due to its lumbering regulation – has not to date been commonly used. The level of protection that is attributed to the family home by the new optional community of accrued gains is not only consistent with the European common core, but from a German point of view it also establishes a clear advantage that cannot be reached by a contractual agreement. The major significance of the new common matrimonial property regime, however, lies in the fact that for the first time ever, identical substantive family law will be applied in two European countries. Nonetheless, the potential benefits of this uniform law will only be realised to full extent if beyond the mere unification of the law, a consistent interpretation of the provisions can be reached in the member states. Whether the new property regime unveils a ground-breaking impact will primarily depend on its future development from a bilateral convention to a uniform optional European property regime. Analysing the model from a comparative point of view and in due consideration of the therein contained option for other countries to join the Convention, the stipulations seem at least generally suitable for affiliation. However, if in a second step the community of property, which is also very common in many European countries, were to be established as a further optional matrimonial property regime – be it at a binational, multinational or even European level – this should be based on the sound foundation of a detailed comparative law inquiry, taking into account in particular the evolving Principles of Matrimonial Property Law of the Commission of European Family Law. Moreover the Franco-German community of accrued gains could function as the initial spark for the creation of further uniform law. The choice of a uniform property regime facilitates the asset planning that is usually extremely complex in crossborder situations. Nevertheless, due to the diverging stipulations of maintenance law in the participating countries as well as the varying compensation mechanisms and the different scope of judicial review or authorisation schemes, the economic consequences of a divorce can vary considerably. This could be countered by an optional uniform legal framework encompassing all aspects of marriage law. Spouses could choose this legal regime upon contracting marriage. Thus, the new Franco-German property regime could lead the way to a uniform European optional property regime and ultimately to a European marriage.