AbstractEvery country must allocate final decision-making authority over different issues/subjects within its boundaries. Historically, many scholars working on this topic implicitly assumed that identifying the features providing entities with justified claims for authority and the entities possessing those features would also identify which groups should have which powers (or vice versa). However, many candidate allocative principles select multiple entities as candidates for some sub-state authority and yet fail to explain which powers each should possess. Further work must explain which groups should possess which powers when and what to do when two groups can make equally-valid authority claims using the same principle. Subsidiarity, the principle under which authority should presumptively belong to the entity representing those ‘most affected’ by its exercise and capable of addressing underlying problems, is one of the few principles focused on identifying which groups should have which powers. Unfortunately, subsidiarity alone does not provide guidance on many issues/subjects. Useful subsidiarity-related guidance relies on balancing underlying justificatory interests, which do the real allocative work. Another allocative principle remains necessary. A deflationary account of subsidiarity’s allocative potential nonetheless provides insights into how to articulate a new principle and accounts of subsidiarity that can fulfill other moral roles.