The rapid proliferation of electronic payment media continues to change the way consumers shop and merchants sell goods and services. Many policymakers and economists agree that the digitization of payments is socially beneficial. However, there is considerable debate regarding the optimal...

The provision of retail payment services is complex with many participants engaging in a series of interrelated bilateral transactions and subject to large economies of scale and scope along with strong adoption, usage and network externalities. This makes sound public policy difficult. We focus...