Quarterly data available
Quarterly CPI data can be found in tables 17 and 18 in the Data downloads. Data for the most recent quarter will be added to tables 17 and 18 when the monthly CPI is published for the months of March, June, September and December.
Re-referencing the quarterly CPI data
The previously published quarterly data has been re-referenced and aligned to the new monthly CPI series. September 2025 serves as the link period where the index equals 100.00. While the level of the quarterly indexes has changed due to re-referencing, the percentage movements of the index have not been revised.
More information on re-referencing is available in Re-referencing the quarterly Consumer Price Index.
Quarterly Trimmed mean
The quarterly Trimmed mean based on pre-October 2025 methods is available in Appendix 1a. More information on the quarterly Trimmed mean is available in Quarterly Trimmed mean explanatory note.
A history of automotive fuel prices
An article is available that explains how automotive fuel prices are measured in the CPI and a summary is provided of some important events which have impacted fuel prices in Australia. For more information see A history of automotive fuel prices.