This paper introduces financial market frictions into a standard New Keynesian model through search and matching in the credit market. Under such financial mar- ket frictions, a second-order approximation of social welfare includes a term involv- ing credit, in addition to terms for inflation...

We introduce financial market friction through search and matching in the loan market into a standard New Keynesian model. We reveal that the second order approximation of social welfare includes the terms related to credit, such as credit market tightness, the volume of credit, and the loan...