The inflation rate is overstated by about 1% each year because of difficulties in measuring new goods entering the consumer price index and improvements in the quality of existing goods in the consumer price index. With that adjustment of 1% in the chart below, a common measure of that bias, New Zealand has had zero to negative inflation for four years
Source: Reserve Bank of New Zealand Key Statistics.
One of the reasons for an inflation target band of 1 to 3% is an inflation rate of 1% is actually an inflation rate of 0%.
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