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Two online resources about inflation and the Consumers Price Index (CPI) explain the effect of price increases on household spending, and how this can be measured using the CPI.
They include worksheets for you to calculate the inflation rate and compare it to changes in your rent, wages, inheritances and fixed payments.
A simple or a more detailed explanation
A simple explanation of inflation and the CPI tells you the basics and offers examples of using the CPI and do-it-yourself worksheets.
Inflation and the CPI - more detailed explanations includes details about what index numbers mean, and explains the basket of goods that underpins a price index. This resource also contains examples of everyday uses of the CPI and do-it-yourself worksheets.
Online calculator
The Reserve Bank of New Zealand's Inflation Calculator allows you to use the CPI to work out the inflation rate for an amount and time period you specify.
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