This paper examines the historical relationship between child welfare expenditure and divorce 
law reform in post-war Europe, with particular focus on how states developed fiscal 
mechanisms to address the economic consequences of family dissolution. Drawing on 
comparative analysis across Britain, Sweden, Germany, France, and other European welfare 
states, the paper traces how governments moved from treating divorce as a private moral 
matter to managing it as a public fiscal concern. The study finds that the expansion of welfare 
state infrastructure after 1945 both shaped and was shaped by evolving divorce legislation, 
creating a feedback loop between legal reform and public spending. The paper argues that 
child welfare expenditure became a central instrument through which European states 
exercised authority over dissolving families, transforming divorce from a judicial event into an 
economic governance problem.