Australian CPI (Sep) 104.34 (Prev. 103.50)

Australian CPI (Sep) 104.34 (Prev. 103.50)

The headline carries the index level rather than the inflation rate itself, so the market-relevant read is the implied annual pace off the prior comparison, which is the number the rates market trades against. Australian CPI is the primary input into the RBA reaction function, and in past cycles the quarterly print has been the release most capable of shifting the pricing of the cash rate path at the front of the curve, with the trimmed mean and other core measures in the detail mattering more to the bank than the headline. The distinction worth drawing is between a print driven by volatile or administered items and one showing breadth in services and housing components; the former has tended to be faded, the latter to hold. The follow-ons are the breakdown within the release, any monthly CPI indicator corroboration, and how it sits relative to the RBA's own published forecasts, since the bank has historically reacted to deviation from its track rather than to the level of inflation alone. AUD and short-dated yields typically key off the core measures rather than the index print.