Abstract:This paper analyzes how bank lending to the private nonbank sector responds dynamically to aggregate supply, demand and monetary policy shocks in Germany and the euro area. The results suggest that the dynamic responses in the two areas are broadly similar, although there are some differences in the relative contribution of the three shocks to the development of output, prices, interest rates and bank loans over time. In order to assess the role of bank lending in the transmission of macroeconomic shocks, we perform counterfactual simulations and analyze the dynamic responses of German loan sub-aggregates in order to test the distributional implications of potential credit market frictions. The results suggest that there is no evidence that loans amplify the transmission of macroeconomic fluctuations or that a "financial accelerator" via bank lending exists.Keywords: Business cycle fluctuations, bank lending, SVAR model, sign restrictions JEL classification: E32, E44, G21
Non-technical summaryTwo related issues form the starting point of our analysis. The first one is the question why the development of bank credit in Germany has differed so much from that in the euro area in recent years. Contrary to the euro area, there was a slowdown in credit growth in Germany and there is an ongoing discussion about the factors that have led to this marked difference.The other issue is the more general question whether bank loans dampen or amplify the effects of macroeconomic shocks. This latter question is closely related to the empirical literature on the "financial accelerator" which faces the -still unresolved -problem of identifying credit demand and credit supply movements.In order to shed some light on these issues, we analyse how bank lending to the private nonbank sector responds dynamically to macroeconomic shocks in Germany and the euro area. We first estimate the joint dynamic behaviour of real GDP, the price level, the short-term nominal interest rate and the stock of outstanding bank loans using a vector-autoregressive (VAR) model. Based on this model, we identify an aggregate supply shock, a demand shock and a monetary policy shock by imposing short-run sign restrictions on impulse responses.This method has the advantage of being relatively agnostic. It therefore implies a much smaller probability of "creating" certain results by imposing strong a priori restrictions than e.g. long-run or zero restrictions, which are often used in the structural VAR literature. We then assess the patterns of the dynamic responses of economic activity, prices, interest rates and bank lending to the three identified macroeconomic shocks as well as the contribution of the three shocks to fluctuations in output, prices, interest rates and bank lending over time based on historical decompositions.The results suggest that the dynamic response of bank lending to macroeconomic fluctuations in Germany and in the euro area is broadly similar, although there are some differences in the relative contribution of the three shocks ...