The Melbourne Institute’s inflation gauge for September picked up 0.2pp to 3.0% with Q3 averaging 2.9% up slightly from Q2’s 2.8%. It also has a trimmed mean measure which also rose 0.2pp to 2% in September to be 1.9% in Q3 up from Q2’s 1.5% and may be trending higher again. Monthly CPI inflation is also higher over Q3 and RBA Governor Bullock sounded cautious last week as the central bank is concerned that there are signs a few key components are rising, especially market services which have also been sticky overseas. The key quarterly CPI data are released 29 October and are likely to determine the outcome of the 4 November RBA meeting.
Australia trimmed mean inflation y/y%

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US PPI inflation is released on Wednesday before CPI inflation on Thursday, an unusual ordering that should see core PCE implications dialled in after the CPI release rather than the usual wide range waiting for specific PPI details. PPI will be watched more closely than usual this month after a far stronger than expected jump in last month’s July report fired a warning short over tariff-based cost pressures starting to feed through. That included a 0.6% M/M increase in our preferred core series of PPI ex food, energy & trade services, which strips out items such as the then booming portfolio management & investment advice category following the strength in equity markets. It's too early to gauge an accurate sense of analyst expectations for August.
CPI inflation on Thursday will then be the last major release ahead of the Sep 17 FOMC decision. Consensus looks for core CPI at 0.3% M/M after the 0.32% M/M in July, another monthly increase comfortably above a pace consistent with 2% inflation. August should in theory start to see the largest tariff impacts along with September and possibly October. Returning to July’s report, core goods inflation was softer than expected, at a still solid (by core goods standards) 0.2% M/M for a second month running but about half that of 0.4% expected by analysts. Instead, non-housing core services surprised higher. The latter was a “dangerous” development in the words of a usually dovish Chicago Fed’s Goolsbee (’25 voter), who speaking after Friday’s payrolls report is still undecided on a September cut whilst looking for August inflation data “to get more information”.

Barclays analysts now expect three Fed cuts in the remainder of the year, adding October to their pre-existing call for 25bp reductions in September and December. "Given the disappointing August employment report, we expect the FOMC to see more elevated downside risks to the employment side of the mandate."