March 1, 2013
We introduce the financial market friction through the search and matching in the loan market into a dynamic stochastic general equilibrium (DSGE) model. We reveal that the second order approximation of social welfare includes the terms relating credit, such as credit market tightness, the volume of credit, and a loan separation rate, in addition to the inflation rate and the output gap under the financial market friction. Our analytical result justifies the reason why the optimal policy should take the credit variation into account. We introduce a monetary policy and other policy measures for the financial stability into the model. The optimal outcome is achieved through the monetary and other policy measures by taking into account not only price stability but also financial stability.
We thank Kosuke Aoki for valuable suggestions and comments. Views expressed in this paper are those of the authors and do not necessarily reflect the official views of the Bank of Japan.
Papers in the Bank of Japan Working Paper Series are circulated in order to stimulate discussion and comments. Views expressed are those of authors and do not necessarily reflect those of the Bank.
If you have any comment or question on the working paper series, please contact each author.
When making a copy or reproduction of the content for commercial purposes, please contact the Public Relations Department ([email protected]) at the Bank in advance to request permission. When making a copy or reproduction, the source, Bank of Japan Working Paper Series, should explicitly be credited.