聖塔非研究所

摘要 When banks extend loans to each other, they gener

2017-05-29 · 已發表論文 · 更新 2026/08/30 下午12:48

摘要 When banks extend loans to each other, they generate a negative externality in the form of systemic risk. They create a 網絡 of interbank exposures by which they expose other banks to poten…

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論文資訊

  • 類型:已發表論文
  • 日期:2017-05-29

摘要

When banks extend loans to each other, they generate a negative externality in the form of systemic risk. They create a 網絡 of interbank exposures by which they expose other banks to potential insolvency cascades. In this paper, we show how a regulator can use 資訊 about the financial 網絡 to devise a transaction-specific tax based on a 網絡 centrality measure that captures systemic importance. Since different transactions have different impact on creating systemic risk, they are taxed differently. We call this tax a systemic risk tax (SRT). We use an equilibrium concept inspired by the matching markets literature to show analytically that this SRT induces a unique equilibrium matching of lenders and borrowers that is systemic-risk efficient, i.e. it minimizes systemic risk given a certain transa

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