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Consumers price index (inflation)

The consumers price index (CPI) gives you information about changes to the prices of consumer items New Zealand households buy, and provides a measure of household inflation.

You can find out about price changes for 11 CPI groups: food, housing and household utilities, health, recreation and culture, education, communication, clothing and footwear, transport, alcoholic beverages and tobacco, household contents and services, and miscellaneous goods and services.

Latest news

New CPI visualisation tool
Our new interactive Consumers price index visualisation tool helps you to explore the changes in price and relative importance of goods and services in the CPI basket.

The tool's interactive pie chart allows you to drill down from the all groups CPI to more than 100 basket subcategories including restaurant meals, electricity, petrol, and international air fares. The longer the slice the larger the percentage increase and the wider the slice the more important the subcategory is in the overall index.

See Price Index News for the latest edition of our quarterly newsletter.

Information releases

Explore our latest CPI statistics.

Consumers Price Index – information releases 
Information on how prices for goods and services purchased by private New Zealand households have changed. Published each quarter.

Data

Analyse the numbers.

Infoshare 
Select the following categories from the Infoshare home page to find CPI time-series data:
Subject: Economic indicators
Group: Consumers Price Index

Find out more about Infoshare.

Reports and articles

Explore information we've gathered from research and analysis.

Historical CPI information (published 2014)
Includes some digitised material dating back to the early 1900s, to mark 100-year anniversary of CPI. 
100 years of CPI – Price changes (published 2014)
Interactive time series visualisation showing how CPI annual inflation has tracked over the century. 
100 years of CPI – Basket change (published 2014)
Interactive basket visualisation showing when selected goods and services were added or removed from the CPI .

CPI Advisory Committee 2013 (published 2012–13)
Links to a page with the 2013 committee's report and related documents.

Consumers price index review: 2011 (published 2011)
Details of the 2011 review of the CPI basket.

Information about the data

Get technical information such as classifications used, survey design, or a glossary of statistical terms.

DataInfo+
DataInfo+ allows you to search and browse for information about our statistical activities and data. Find information about the concepts, population, variables, and classifications used in the CPI.

CPI sources and methods
Find articles about the data sources and methods we use to compile the CPI – for the different goods and services in the basket.

Analytical retrospective superlative index based on New Zealand’s CPI: 2011 (published 2011)
Find results of a review that involved reselecting and reweighting the basket of representative goods and services, and analysis of how the CPI would have tracked had the index not been reweighted in 2006 and/or 2008. 

Resources

Get help to interpret and use our data.

Price indexes
Find out about the different price indexes we publish.

Statistics NZ clarifies impact of GST on CPI (published 2010)
Find information about how a change in GST affects prices in the CPI.

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