Staff Reports
The Welfare Effects of a Liquidity-Saving Mechanism
June 2008 Number 331
Revised January 2010
JEL classification: E42, E58, G21

Authors: Enghin Atalay, Antoine Martin, and James McAndrews

This paper considers the welfare effects of introducing a liquidity-saving mechanism (LSM) in a real-time gross settlement (RTGS) payment system. We study the planner’s problem to get a better understanding of the economic role of an LSM and find that an LSM can achieve the planner’s allocation for some parameter values. The planner’s allocation cannot be achieved without an LSM, as long as some payments can be delayed without cost. In equilibrium with an LSM, we show that there can be either too few or too many payments settled early compared with the planner’s allocation, depending on the parameter values.

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