A fundamental aspect of any open payment system is the interchange fee that is paid from the merchant's bank to the cardholder's bank. Using a model in which there is partial participation by heterogeneous consumers and merchants, this paper characterizes the output maximizing, profit maximizing...

This article investigates which firms borrow directly from the capital markets and which raise funds through intermediaries. Our empirical results show that large companies with abundant cash and collateral tap the credit markets directly. These markets cater to safe and profitable industries,...