The objective of this paper is to analyse the influence monetary policy on credit supply in WAEMU zone over period 1996-2017. study focuses countries, except for Guinea-Bissau, due unavailability sufficient data. We apply Panel Smooth Transition Regression (PSTR) model Gonzalez et al. (2005). results reveal non-linearity link between and supply. There a threshold risk exposure 8.726% above whic...