Six municipalities in the Stockholm North East are revising their vision and developing an action plan for Täby-Arninge, one of eight regional urban cores in Stockholm. Both processes have a clear focus on business development. Nordregio has provided input to the process, including a comparative analysis of the business structure and a discussion of potentials and obstacles for business development. Our report presents reflections concerning the role of municipalities and suggestions of the future Täby-Arninge core for local planners.