Low inflation (of around 2% ) is indeed the primary economic target of all major economies. Everyone assumes inflation is bad, but, how really damaging is it if inflation rises above the inflation target?
Let us assume that inflation was to rise above 2% closer to 6 or 7% what would be the economic consequences?
Potential Costs of Inflation
Inflation reduces value of savings. High inflation reduces the value of money. Therefore people who keep cash under the bed will see their savings decline. But, who actually keeps money under the bed? If interest rates are higher than inflation then the real value of money will be maintained. Inflation of 7% and interest rates of 9%, is much better than the current situation of inflation 2.9% and interest rates of 0.5%. (which is a negative real interest rate). It is not the inflation rate that determines real value of savings but the real interest rate.
Inflation makes people worse off. Higher prices increase the cost of living. Again the key issue is whether nominal wages keep up with rising price level. As long as real wages remain positive people will not be worse off. All state benefits are index linked meaning that higher inflation will lead to bigger rises in benefits.
International competitiveness. A higher UK inflation rate causes UK goods to become uncompetitive. However, the inflation will also cause a depreciation in the value of pound restoring the competitiveness of exports.
Confusion and Uncertainty It is said high inflation rates create greater uncertainty and confusion leading to lower levels of investment. Alot depends on whether the inflation is anticipated or unanticipated. If inflation is anticipated the impact on uncertainty is much less.
Menu costs. Higher inflation rates mean firms will have to readjust prices more frequently. But, with modern technology it is easier to do.
The Spiral Effect. The big fear of inflation is that a moderate rise in inflation rates causes inflation to inexorably spiral upwards. If we allow inflation to rise a little, before we know it we are facing a real problem with inflation in 3 digits. In practise it is hard to control inflation once it starts to get out of hand. Therefore, its best to keep it low
Targeting low inflation does make sense. By targeting low inflation we can provide a framework for sustainable and stable economic growth. It helps avoid boom and bust cycles which are very damaging.
However, maybe some Central Banks (in particular the ECB) could loosen up a little and not feel so guilty if inflation slightly overshoots the target. Many years ago, Norman Lamont told us 'unemployment is a price well worth paying for lower inflation' but, maybe this assumption is misplaced and not true. Whilst inflation does have costs, there are potentially much bigger costs of dogmatically targeting low inflation, especially in the current climate.
Also another lesson of this recession is that targeting low inflation is insufficient to maintain macroeconomic stability. The low inflation of the early 2000s seems to have given us a false impression of economic stability.