A Pigovian Approach to Liquidity Regulation

Enrico Perotti and Javier Suarez

Tinbergen Institute Discussion Papers from Tinbergen Institute

Abstract: This paper discusses liquidity regulation when short-term funding enables credit growth but generates negative systemic risk externalities. It focuses on the relativemerit of price versus quantity rules, showing how they target different incentives for risk creation.When banks differ in credit opportunities, a Pigovian tax on short-term funding is efficient in containing risk and preserving credit quality, while quantity-based fundingratios are distorsionary. Liquidity buffers are either fully ineffective or similar to a Pigovian tax with deadweight costs. Critically, they may be least binding when excess credit incentives are strongest.When banks differ instead mostly in gambling incentives (due to low charter valueor overconfidence), excess credit and liquidity risk are best controlled with net fundingratios. Taxes on short-term funding emerge again as efficient when capital or liquidityratios keep risk shifting incentives under control. In general, an optimal policy shouldinvolve both types of tools.

This discussion paper resulted in a publication in the (December 2011).

Keywords: Systemic risk; Liquidity risk; Liquidity requirements; Liquidity risk levies; Macroprudential regulation (search for similar items in EconPapers)
JEL-codes: G21 G28 (search for similar items in EconPapers)
Date: 2011-02-17
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (135)

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Related works:
Journal Article: A Pigovian Approach to Liquidity Regulation (2011)
Working Paper: A Pigovian Approach to Liquidity Regulation (2011)
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Persistent link: https://EconPapers.repec.org/RePEc:tin:wpaper:20110040

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