The Bank for International Settlements’ Irving Fisher Committee on Central Bank Statistics published seminar proceedings assessing central banks’ use and production of sustainability data. The bulletin finds that information remains incomplete, heterogeneous, insufficiently granular and difficult to compare, limiting its use in monetary policy, financial stability, supervision, regulation, reserve management and payment oversight. The publication organizes improvement efforts around four dimensions: policy relevance, availability and accessibility, reliability, and international comparability. It calls for stronger methodological frameworks, common standards and identifiers, better integration and sharing of granular, administrative, geospatial and private data, and greater use of techniques such as nowcasting, machine learning and artificial intelligence. It also supports gradually expanding data collections, prioritizing climate information while developing biodiversity, social and governance indicators where concepts and data are sufficiently mature.