Financing the Belgian federation

Abstract Between 1970 and 2015, six constitutional reforms transformed Belgium into a highly complex and asymmetric federal state, illustrating how political and linguistic divides can complicate public finance as well. The Belgian federation operates along two axes: language-based and territory-based competences, embodied by the communities and the regions. However, overlapping jurisdictions in Brussels and differing institutional structures between the Dutch- and French-speaking sides have resulted in a highly complex fiscal structure as well. The financing framework, governed by the Special Financing Law (1989), therefore attempts to balance autonomy, accountability, solidarity, and fiscal competition. Yet, the resulting lack of budgetary and fiscal coordination between and across levels of government poses challenges, especially as rising social security costs, the green transition, and other twenty-first-century demands strain resources. This chapter examines these complexities and asymmetries, highlighting how the fiscal framework’s rigid design impedes responses to emerging challenges. By unpacking these issues, we aim to inform potential reforms for Belgium and other federations navigating similar trade-offs.