EDINBURGH – Over the last three decades or so, central bankers and academics have become increasingly confident that inflation targeting is the key to preserving macroeconomic stability. But this is virtually impossible to prove, and the 2008 financial crisis suggested to many that monetary policy should focus on more than the prices of goods and services. So how should a revised mandate for central banks be structured to maintain their focus on low inflation while allowing monetary policy to address other issues when appropriate?
The contribution that inflation targeting makes to macroeconomic stability is difficult to discern for a simple reason: it is impossible to know what would happen if a country’s central bank pursued the opposite course. Unable to compare outcomes directly, researchers have employed a variety of strategies to identify the impact of inflation targeting, and have typically found it to be substantial (though the effect becomes small or even zero when countries’ starting points are taken into account).