If rapidly rising prices are bad for the economy, is the opposite, or falling prices, good? It turns out that deflation is not desirable either. When prices are falling, consumers delay making purchases if they can, anticipating lower prices in the future. For the economy this means less economic activity, less income generated by producers, and lower economic growth. Japan is one country with a long period of nearly no economic growth largely because of deflation. Preventing deflation during the recent global financial crisis is one of the reasons the U.S. Federal Reserve and other central banks around the world kept interest rates low for a prolonged period and have instituted other policy measures to ensure financial systems have plenty of liquidity.
Most economists now believe that low, stable, and—most important—predictable inflation is good for an economy. If inflation is low and predictable, it is easier to capture it in price-adjustment contracts and interest rates, reducing its distortionary impact. Moreover, knowing that prices will be slightly higher in the future gives consumers an incentive to make purchases sooner, which boosts economic activity. Many central bankers have made their primary policy objective maintaining low and stable inflation, a policy called inflation targeting.
