This working paper provides a critical survey of the large and diffuse literature on credit cards, debit cards and ATMs. We argue that because there are still many outstanding issues and questions about the pricing, use and substitutability of these payment mechanisms, that there are significant further opportunitiesfor research in these areas.

A large number of questions are examined in this survey, including the pricing of credit cards, the impact of networks on the provision and pricing of ATMs, as well as the tradeoffs that consumers make between different types of payment mechanism, including debit cards, credit cards and ATMs. Importantly, this paper is also amongst the first to provide new evidence on this latter question from bank level data (from Spain). We conclude that point of sale (debit card) and ATM transactions are substitutes, and that ATM surcharges impact point of sale volume significantly.