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CPI data commentary from Chief Economist David Robertson

30 September 2026
While the headline CPI rate was high, as expected, at 4.0%, there is good news in the August inflation report with core inflation dipping slightly.

The RBA’s preferred measure of core inflation (the trimmed mean) decelerated from 0.5% in the month of July to 0.2% in August, a pace consistent with the annual target of 2.5%.

This was helped by the fact that the trimmed mean this month excluded the outliers of automotive fuel and electricity.

While this doesn’t change the reality that these costs are pinching the household budget, the RBA should be less inclined to hike rates again in November based on this underlying pace of inflation.

As such, we continue to forecast rates on hold for the balance of 2026 but still consider there is a risk of another hike next year, most likely in February.

We do not have any rate cuts in our forecast for 2027.

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