It is difficult to identify universally applicable best practices in decentralisation or devolution programmes that address corruption. Evidence suggests that interventions in different programmes have ambiguous and mixed effects, and that success often depends on contextual factors such as depth of democracy and political will. Moreover, anti-corruption tends to be a secondary objective in most donor-driven decentralisation and devolution programmes, making it difficult to determine effective best practices. Nevertheless, this paper seeks to explore potential ways in which corruption can be reduced as a result of decentralisation or devolution programmes. It analyses various common interventions by donors to support devolution and decentralisation, such as improving democratic processes, institutional and legal capacity for local governments, supporting local-level public financial management, as well as a number of social accountability mechanisms.