This contribution attempts to approach informal transnational authority through the lens of critical private international law. It subscribes to the underlying idea within this volume, according to which the workings of the highly complex dynamic between the public and the private are cardinal to understanding contemporary global shifts in transnational authority, placing the rise of informal transnational authority at its epicenter. Expressions of private authority in the global arena take place outside formal legal discourse. Capital expanding beyond state boundaries has organized its own forms of authority, which arbitrate, enforce and legitimize new processes and structures beyond the state. To understand the ways in which this has taken place, the methodological dimensions of private international law, which have been central to these processes, require closer scrutiny.