Australian September core inflation (trimmed mean) 3.7% y/y (expected 3.6%)

Australia CPI, September 2026 / Q3 

Quarterly (Q3)

• CPI q/q: 1.3% vs. 1.3% expected (prior 0.6%)
• CPI y/y: 3.9% vs. 3.9% expected (prior 3.9%)
• Trimmed mean q/q: 1.0% vs. 1.0% expected (prior 0.8%)
• Trimmed mean y/y: 3.7% vs. 3.6% expected (prior 3.5%)

Monthly (September)

• CPI m/m: 0.8% vs. 0.7% expected (prior 0.4%)
• CPI y/y: 3.9% vs. 4.2% expected (prior 4.0%)
• CPI index: 104.34 (prior 103.50)
• Trimmed mean m/m: 0.3% vs. 0.3% expected (prior 0.2%)
• Trimmed mean y/y: 3.7% vs. 3.6% expected (prior 3.6%)
• Weighted median m/m: 1.0% (prior 0.7%)
• Weighted median y/y: 3.6% (prior 3.6%)

Earlier, a hawkish Bullock:

• RBA’s Bullock: oil shock means inflation above August forecasts, Board meets next week

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Background to this data:

• Australia CPI preview: banks see 1.0% core rise, above the RBA’s 0.8% forecast

• Economic and event calendar in Asia Wednesday, October 28, 2026. AUD CPI, RBA and RBNZ

• Australia CPI explained: why 2 inflation readings land today and which one the RBA watches

This article was written by Eamonn Sheridan at investinglive.com.