Interchange fees in card payments are a mechanism to balance costs and revenues between banks for the joint provision of payment services. However, such fees represent a relevant input cost used as a reference price for the final fee charged to the merchants, who may be reluctant to accept cards and induce the cardholder to withdraw cash. In this paper, we empirically verify for the first time the effect of the interchange fee on the decision to withdraw cash and compare it with that of paying with payment cards, considering a balanced panel data set of Italian issuing banks. Finally, results show that there is a positive correlation between the cash usage and the level of the interchange fees. Accordingly, regulation of the multilateral interchange fee level may be an effective tool in reducing cash payments at the point of sale, although there is no clear evidence that a zero interchange fee rate (or a close-to-zero rate) would be optimal.
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