AUD/NZD Widens on RBA Hawkishness After RBNZ Surprise Hold

The same energy price shock confronts both economies, yet Bullock views it as a source of worry whereas the RBNZ majority bets on weak demand to absorb it. This contrast in stance fuels the divergence. A widening differential in anticipated rates tends to boost AUD/NZD, and an RBA hike next week, paired with the RBNZ holding off until December, would prolong this. The key threat to the trend is the RBNZ's 4-3 split: any hawkish comment from Breman during her press conference, or a solid signal of a December move, could swiftly tighten the cross rate. A more dovish RBA stance next week would cause a similar effect. Further oil price increases would pressure both institutions, though the RBA currently appears more prepared to act.

---

• RBNZ OCR left at 2.75% in surprise 4-3 vote, signals tighter policy still on table
• Australia's trimmed mean CPI hits 3.7%, exceeding forecasts, firming RBA hike case
• RBA's Bullock says oil shock pushes inflation above August forecasts ahead of Board meeting

---

Within an hour and a half, Australia flagged a potential need for further tightening while New Zealand opted to wait, with the AUD/NZD cross rate reflecting this split.

Summary:

• RBA Governor Bullock stated that inflation is set to exceed the bank's August projections, driven by higher energy prices and a tighter labour market, ahead of the November 2-3 meeting.
• Australia's Q3 trimmed mean CPI hit 3.7% year-on-year, surpassing the 3.6% consensus, while September headline inflation rose to 4.3%.
• In a 4-3 vote, the RBNZ surprised markets and all five major local banks by holding the OCR at 2.75%.
• The RBNZ indicated tighter policy remains probable but depends on conditions, with the next rate decision and fresh forecasts due in December.
• Widening rate forecasts generally favour AUD/NZD, though the RBNZ's divided vote and its own 4.4% December inflation forecast constrain the spread.
• Key upcoming events are Breman's media conference at 02:00 GMT and the RBA's decision next week.

Wednesday saw Australia and New Zealand emit starkly opposed policy messages inside 90 minutes, placing the AUD/NZD exchange rate squarely in the spotlight as a hawkish shift from the RBA ran into the RBNZ's unexpected pause.

Australia's tone was markedly hawkish. Before a Senate committee, RBA Governor Michele Bullock said inflation was on course to exceed the August central bank projections, pointing to a fresh uptick in energy costs triggered by the Middle East conflict and a tighter labour market than had been judged. She stated that a crucial matter for the Board's upcoming meeting is whether the 100 basis points of tightening already implemented this year will suffice. Shortly after, Q3 data showed the RBA's favoured trimmed mean CPI measure climbed to 3.7% year-on-year, beating the 3.6% forecast, while the monthly headline rate hit 4.3% in September.

New Zealand took an opposing direction. The RBNZ maintained its official cash rate at 2.75% via a 4-3 decision, defying market odds of roughly 90% for a rise and the predictions of all five major domestic banks. The majority, inclusive of Governor Anna Breman, argued that the two rate rises already enacted give the committee space to evaluate their impacts, citing headline inflation of 3.7% which came in below expectations, limited fuel-cost pass-through, restrained wage growth, and a weak domestic recovery. The committee maintained that tighter policy is probable, but made it contingent on the evolving outlook.

This outcome creates a widening chasm in rate expectations between the two central banks. Markets are expected to raise the probability of an RBA increase on November 2 and 3, while delaying expectations for the RBNZ's next action until the December Monetary Policy Statement at the earliest. Given that AUD/NZD typically follows the differential in Australian and New Zealand short-term rates, this rebalancing of relative expectations usually benefits the Australian dollar versus the kiwi.

Boundaries to this divergence persist. The RBNZ's vote was not unanimous, every member concurred that tighter policy is probable, and a December inflation projection of 4.4% provides scope for a hike if fuel pass-through accelerates. The RBA, on the other hand, remains uncommitted, and the more moderate weighted median CPI reading offers some leeway to hold off. Both economies face the identical oil shock, which fuels inflation on both shores of the Tasman.

The immediate hurdles are Breman's media conference at 02:00 GMT, where any suggestion of a December rise could tighten the spread, and the RBA's decision next week, which will be accompanied by fresh forecasts revealing the extent to which it has adjusted its inflation outlook.