Spain has undertaken a series of reforms over the last decade to strengthen the government’s ability to deliver high-quality services to citizens and businesses, while enhancing transparency and accountability. One major effort spearheaded by the National Audit Office (Oficina Nacional de Auditoría or ONA) is the continuous supervision system (SSC), a risk-based methodology that acts as a litmus test for the financial health, effectiveness and sustainability of public institutions. Drawing on interviews, a comparative analysis of leading practices, and research, this report provides recommendations to support the ONA in further strengthening its management of the SSC by improving its strategy, use of data, and co-ordination mechanisms across government.