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Demand–Deposit Contracts and the Probability of Bank Runs
Author(s) -
GOLDSTEIN ITAY,
PAUZNER ADY
Publication year - 2005
Publication title -
the journal of finance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 18.151
H-Index - 299
eISSN - 1540-6261
pISSN - 0022-1082
DOI - 10.1111/j.1540-6261.2005.00762.x
Subject(s) - bank run , market liquidity , welfare , demand deposit , economics , monetary economics , ex ante , microeconomics , business , econometrics , macroeconomics , monetary policy , market economy
Diamond and Dybvig (1983) show that while demand–deposit contracts let banks provide liquidity, they expose them to panic‐based bank runs. However, their model does not provide tools to derive the probability of the bank‐run equilibrium, and thus cannot determine whether banks increase welfare overall. We study a modified model in which the fundamentals determine which equilibrium occurs. This lets us compute the ex ante probability of panic‐based bank runs and relate it to the contract. We find conditions under which banks increase welfare overall and construct a demand–deposit contract that trades off the benefits from liquidity against the costs of runs.