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.
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.
Change to timing of CPI release
Commencing from February 2027, the CPI will be published on the fourth Wednesday of each month, rather than the final Wednesday of each month. Following feedback from users, the ABS conducted a review which determined that an earlier release would have no impact on the quality of the CPI data and would continue to meet the needs of our users. The new dates for the CPI release will be reflected in the ABS release calendar.
Next CPI weight update in January 2027
Earlier in the year it was decided to postpone the 2026 weight update. A mid-2026 update would be considered if household spending patterns had changed sufficiently. The ABS has monitored household spending data and determined a mid-2026 update is not needed. The CPI weights will be updated for January 2027, scheduled for release on 24 February 2027.