Does Global Liquidity Matter for Monetary Policy in the Euro Area

Abstract

Global excess liquidity prevalent across the world's financial markets (or its sudden absence) is sometimes believed to limit sovereign monetary policy even in large economies such as the euro area. However, there is still discussion about what constitutes global excess liquidity and how exactly it shapes the policy environment. Our approach adjusts liquidity for a longer-term interest rate and output effects and focuses on US and Japanese liquidity as relevant proxies for global developments from a euro area perspective. We find that, in particular, excess liquidity in the US tends to lead developments in euro area liquidity. US excess liquidity is also consistently positive as a determinant of euro area inflation and is shown to be Granger-causal for euro area inflation in an out-of-sample forecasting exercise. There is some evidence that, at least in part, this result seems to be related to a weakening of the effectiveness of monetary policy in the euro area interest during times of excessive US liquidity. In contrast, the influence of euro area excess liquidity on euro area inflation is more limited.