More or less competitive banking?

Barcelona GSE Focus

Xavier Freixas and Kebin Ma reexamine the classical issue of the possible trade-offs between banking competition and financial stability by highlighting different types of risk and the role of leverage. By means of a simple model, they show that competition can affect portfolio risk, insolvency risk, liquidity risk, and systemic risk in different ways.

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How much to tax and how to spend tax money?

taxes

How much should people be taxed and what should tax revenues be spent on? Surprisingly, these topics have mostly been treated in isolation in academic research. Joan Esteban and Laura Mayoral present a model that determines the consensus income tax schedule, the composition of public expenditure, and the size of government.

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To connect or not to connect? A tale of network access

switchboard

If I call your Vodafone mobile from my Orange mobile, who should pay the cost of termination incurred by Vodafone? You, me, Orange or Vodafone? For that matter, which has the better business model – Europe with a “caller pays” system, or the US with an “everyone pays” system? Sjaak Hurkens and Angel L. López analyze an oligopoly of telecom networks to show how termination charges play a role in off-network usage and whether efficiency and profitability are achieved with current business models.

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