Sweeping criticisms of developed-country central banks have lately become all the rage. The main line of attack goes something like this: monetary policymakers have been far too activist since 2008, overstepping their mandates and damaging the economy. This narrative – which, bizarrely, is equally popular among otherwise irreconcilable ideological adversaries, such as libertarians and neo-Marxists – is patently wrong.
What the critics fail to understand is that modern central banks are responsible not just for fighting inflation, but for maintaining long-term price stability. Like a person’s body temperature, price levels can go neither too high nor too low without causing serious complications. Central banks must be as “activist” when combating deflation caused by weak demand as they are when fighting high inflation driven by excessively strong demand.
Though the battle is completely symmetric, the public assessment of it is bafflingly lopsided, especially in countries with financially conservative populations. This includes my own country, the Czech Republic, a nation of small savers where the loan-to-deposit ratio remains well below 100%. Czechs fear inflation, even though it hit a 13-year low last year and the Czech National Bank, of which I am Vice-Governor, has been fighting to avert the risk of deflation since 2013.