Retail central bank digital currencies (CBDCs) and fast payment systems (FPS) share a number of similarities. Both allow for instant transactions for end users, can rely on underlying infrastructures operated by the central bank and can allow for an important role for private payment service...

In only a few years, central banks have rapidly ramped up research and development of central bank digital currencies (CBDCs). A growing body of economic research is informing central banks’ efforts, often focusing on the “reserves for all” aspect of CBDCs for retail use. However, CBDCs...