RBA Decision Day: Board Lifts Cash Rate to 4.60% — How the Guidance Moves AUD

Key takeaways

1. The RBA Monetary Policy Board raised the cash rate target by 25 basis points to 4.60% on 29 September 2026 (media release 2026-27, published 07:30 EAT); the decision was unanimous.

2. The statement said inflation is still too high, that some upside risks flagged in August are materialising, and that the Board will do what it considers necessary, including increasing the cash rate target further if needed.

3. FX transmission runs through the rate level, statement reaction-function language, and press-conference nuance — not the hike headline alone. A pre-written decision/statement/Q&A scorecard is the reusable method for any G10 policy meeting.

The development

The Reserve Bank of Australia published its monetary policy decision at 07:30 EAT (04:30 UTC) on Tuesday 29 September 2026, with Governor Michele Bullock’s press conference scheduled an hour later at 08:30 EAT (05:30 UTC). In media release 2026-27, the Monetary Policy Board said it had decided to increase the cash rate target by 25 basis points to 4.60%, from 4.35% (effective 12 August 2026). The decision was unanimous. Ahead of the release, market coverage from FXStreet and Australian press had summarised a widely held expectation of a 25 basis-point increase to 4.60%, so the level itself matched the modal expectation.

The statement framed the move around inflation: “Inflation remains elevated and some of the upside risks flagged in August are materialising.” The Board pointed to a broadened Middle East conflict and global energy prices much higher than assumed in its August forecasts, and judged that “inflation is still too high” and that “a further tightening in financial conditions is warranted to support a return of inflation to target in a reasonable period.” On the path ahead, it said it “will continue to do what it considers necessary to bring inflation sustainably back to target, including increasing the cash rate target further if needed.” The domestic backdrop still includes elevated inflation (RBA site shows July CPI annual change at 3.5%) against signs of slowing activity. AUD/USD was reported near $0.7013 early Tuesday, before the decision (CNA/Reuters), with the dollar still firm globally.

Market transmission

A cash-rate decision transmits to FX through three channels students should separate:

1. Level surprise — Did the board change the rate as priced, or deviate? On 29 September the 25 basis-point increase matched the widely reported expectation.

2. Reaction-function language — Does the statement keep another hike “on the table,” or emphasise growth/labour risks in a way markets read as peak-rate messaging? This statement explicitly kept further increases open “if needed.”

3. Press-conference nuance — Bullock’s answers often move AUD more than the first headline if she clarifies the path.

Even a fully priced hike can produce two-way AUD volatility if the statement is more dovish or hawkish than the modal expectation. Relative policy also matters: a firmer RBA path supports AUD only to the extent it is not overwhelmed by a still-hawkish Fed and rising US yields.

What to monitor next

• How markets digest the statement’s wording on inflation persistence, energy and geopolitical risks, and the Board’s note that the economy appears to be slowing.

• Bullock’s press-conference answers: references to November, data dependence, or how high the Board is prepared to go.

• Wednesday 30 September Australian CPI cluster on calendars (monthly CPI / trimmed mean) — often more path-defining than a widely anticipated decision.

• The minutes of this meeting, which the RBA schedules for release on 13 October 2026.

• AUD crosses (AUD/JPY, EUR/AUD) for whether any AUD move is local or just dollar echo.

Reusable lesson

For any G10 central-bank meeting, build a decision / statement / Q&A scorecard before the release. Pre-write what would count as “as expected,” “hawkish skew,” and “dovish skew” in plain language. After the print, score the three layers separately. On 29 September the decision layer scored “as expected” (a priced 25 basis-point hike), which is exactly why the statement and Q&A layers carry the information. That habit stops you from treating a priced rate move as automatically supportive or negative for the currency.

Invalidation and risk

The Board itself stressed heightened uncertainty about the outlook for domestic activity and inflation, including scenarios where inflation is higher and activity lower than forecast. A hike paired with open-ended tightening language can still fade quickly if US data later the same day re-steepen Fed hike odds, or if Wednesday’s Australian CPI undercuts the inflation case. Spreads around CB releases are themselves a risk; plan for volatility, not for narrative confidence.

Glossary

Cash rate target: The RBA’s operational policy interest rate for overnight lending between banks.

Priced-in decision: An outcome already reflected in forwards and spot; the surprise is then mostly in guidance.

Reaction function: How a central bank maps incoming data into future rate decisions, inferred from its words.

Sources

“Statement by the Monetary Policy Board: Monetary Policy Decision (Media Release 2026-27)” — Reserve Bank of Australia (2026-09-29). https://www.rba.gov.au/media-releases/2026/mr-26-27.html

“Reserve Bank of Australia — cash rate target and meeting schedule” — Reserve Bank of Australia (2026-09-29). https://www.rba.gov.au/

“RBA set to hike interest rates in September as markets await Bullock’s guidance” — FXStreet (2026-09-29). https://www.fxstreet.com/news/rba-set-to-hike-interest-rate-to-460-in-september-as-inflation-remains-elevated-202609290030

“Dollar holds near two-month peak as yields rise, Fed data looms” — CNA (Reuters) (2026-09-29). https://www.channelnewsasia.com/business/dollar-holds-near-two-month-peak-yields-rise-fed-data-looms-6417176

“Key Economic Events (28 Sep - 2 Oct 2026)” — GBE Prime (2026-09-25). https://gbeprime.com/key-economic-events-28-sep-2-oct-2026-gbe-prime/

Disclaimer

This note is provided by the SummitFx Project for general education and market context only. It is not investment advice, not a solicitation to buy or sell any instrument, and not a personal recommendation. Foreign exchange and related markets are leveraged and can result in the loss of some or all of your capital. Figures are believed accurate at the time of research and may already be stale. Always verify live prices, official releases, and your own risk limits before acting. Past market behaviour does not determine future results.