Australian RBA Trimmed Mean CPI (Sep YY) 3.7% vs. Exp. 3.6% (Prev. 3.6%)

Australian RBA Trimmed Mean CPI (Sep YY) 3.7% vs. Exp. 3.6% (Prev. 3.6%)

The trimmed mean is the RBA's preferred gauge of underlying inflation, so a modest beat against consensus carries more weight for the policy path than an equivalent surprise in the headline print, and the front end of the Australian curve and the AUD tend to key off this series rather than the CPI basket itself. The distinction worth drawing is between an upside surprise driven by services and stickier domestic components, which historically has kept the RBA hawkish, and one driven by volatile or imported items, which the board has tended to look through. A sequential uptick in the core measure after a period of disinflation has in past episodes been enough to push out market pricing for the timing of any easing, even where the miss itself is small, since the RBA has repeatedly framed its tolerance around the trajectory of underlying inflation rather than any single quarter. Worth noting is that the RBA is among the later major central banks in the global cycle, so its reaction function has been watched through the lens of peers that paused or reversed when core proved sticky. The follow-ons are the monthly CPI indicator, which now fills the gaps between quarters, rhetoric from RBA officials at upcoming appearances, and the wages and labour prints that feed the services component. The immediate read is marginally hawkish at the margin, with conviction dependent on composition.