A Model of the Card Payment System and the Interchange Fee
32 Pages Posted: 29 Dec 2002
Date Written: October 2002
Abstract
We analyse a card payment system to assess the economic impact of the interchange fee. This fee is paid by the bank of the merchant, the acquirer, to the bank of the consumer, the issuer. We build up a model in order to explore whether the interchange fee can enhance the participation in the system and thus increase the benefits of the system as a whole. We also investigate what kind of incentives the interchange fee provides to the actors of he system. We show that the interchange fee selected by the card associations differs from the one that would be selected by a welfare-maximising social planner. Moreover, the interchange fee selected by the market is likely to produce a smaller market for cards than the socially optimal one.
JEL Classification: E42
Suggested Citation: Suggested Citation
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