Monetary policy through the ‘credit-cost channel’: Italy and Germany pre- and post-EMU

We present an empirical analysis of the ‘Credit-Cost Channel’ (CCC) of monetary policy transmission. This channel combines bank credit supply and interest rates on loans as a cost to firms. The thrust of the CCC is that it makes both aggregate demand and aggregate supply dependent on monetary policy. As a consequence (1) credit market conditions (e.g. risk spreads) are important sources and indicators of macroeconomic shocks, (2) the real effects of monetary policy are larger and persistent. We have applied the Cointegrated Vector Autoregression (CVAR) econometric methodology to Italy and Germany in the ‘hard’ EMS period and in the European Monetary Union (EMU) period. The short-run and long-run effects of the CCC are detectable for both countries in both periods. Simulation of the estimated model also confirms that inflation-targeting by way of inter-bank rate control stabilizes inflation through structural shifts of the stochastic equilibrium paths of both inflation and the output.