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...

The move from traditional to open-access journals—which charge no subscription fees, only submission fees—is gaining support in academia. We analyze a two-sided-market model in which journals cannot commit to subscription fees when authors (who prefer low subscription fees because this...

Payment card networks, such as Visa, require merchants' banks to pay substantial "interchange" fees to cardholders' banks, on a per transaction basis. This paper shows that a network's profit-maximizing fee induces an inefficient price structure, over-subsidizing card usage and over-taxing...

The move from traditional to open-access journals--which charge no subscription fees, only submission fees--is gaining support in academia. We analyze a two-sided-market model in which journals cannot commit to subscription fees when authors (who prefer low subscription fees because this boosts...

The move from traditional to open-access journals — which charge no subscription fees, only submission fees — is gaining support in academia. We analyze a two-sided-market model in which journals cannot commit to subscription fees when authors (who prefer low subscription fees because this...

The paper develops an integrated model of optimal nonlinear income taxation, public-goods provision and pricing in a large economy. With asymmetric information about labour productivities and publicgoods preferences, the multidimensional mechanism design problem becomes tractable by requiring...