This paper investigate whether a small open economy DSGE-based New Keynesian model can provide a reasonable description of key features of the New Zealand economy, in particular the transmission mechanism of monetary policy. The main objective is to design a simple, compact, and transparent tool for basic policy simulations. The structure of the model is largely motivated by recent developments in the area of DSGE modelling. Combining prior information and the historical data using Bayesian simulation techniques, we arrive at a set of parameters that largely reflect New Zealand’s experience over the stable inflation targeting period. The resultant model can be used to simulate monetary policy paths and help analyze the robustness of policy conclusions to model uncertainty.