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The Interaction of Monetary and Macroprudential Policies
Author(s) -
SILVO AINO
Publication year - 2019
Publication title -
journal of money, credit and banking
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.763
H-Index - 108
eISSN - 1538-4616
pISSN - 0022-2879
DOI - 10.1111/jmcb.12524
Subject(s) - dynamic stochastic general equilibrium , economics , monetary policy , inflation (cosmology) , social planner , new keynesian economics , monetary economics , investment (military) , moral hazard , macroeconomics , microeconomics , incentive , physics , politics , theoretical physics , political science , law
I analyze a New Keynesian dynamic stochastic general equilibrium (DSGE) model where the financing of productive investment is affected by a moral hazard problem. I solve for jointly Ramsey‐optimal monetary and macroprudential policies. I find that when a financial friction is present in addition to the standard nominal friction, the optimal policy can replicate the first‐best allocation if the social planner can conduct both monetary and macroprudential policy. Using monetary policy alone is not enough: a policy trade‐off between stabilizing inflation and output gap emerges. When policy follows simple rules, the source of fluctuations is relevant for the choice of the appropriate policy mix.