The European Union’s institutional development is highly imbalanced. It has established robust legal authority and institutions, but it remains weak or impotent in terms of its centralization of fiscal, administrative, and coercive capacity. We argue that situating the EU in terms of the history of state-building allows us to better understand the outcomes of EU governance. Historically, political projects centralizing power have been most complete when both market and security pressures are present to generate state formation. With the EU, market forces have had a far greater influence than immediate military threats. We offer a preliminary demonstration of the promise of this approach by applying it to two empirical examples, the euro and the Schengen area. Our analysis suggests that the EU does not need to be a Weberian state, nor be destined to become one, for the state-building perspective to shed new light on its processes of political development.