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Data from Reserve Bank of Australia. Forecasts by Sigmanomics Forecast Engine.
AustraliaAustralia RBA Trimmed Mean CPI YoY climbed to 3.6% in September 2026
Reserve Bank of AustraliaMonthlyReleased October 2026
Australia RBA Trimmed Mean CPI YoY climbed to 3.6% in September 2026, released October 2026, up 0.1% from August's 3.5% reading. The reading matched expectations. The print is running well above the 12-month average of 3.33%. Over the past 3 months, RBA Trimmed Mean CPI YoY averaged 3.6%, vs 3.53% in the prior 3-month window. RBA Trimmed Mean CPI YoY is now the highest in 24 months.
Latest Release
3.6
Actual
3.6
Consensus
3.5
Previous
Median Absolute Error
±0.09 percentage points
across last 12 releases
Last Call
Oct 2026
Predicted: 3.63
Actual: 3.7
Error: -0.08
Sigmacast Σ-direction model: consensus + ½ × mean(surprise, trailing 90d).
CORRELATED SYMBOLS— markets that historically move with this indicator
| Symbol | Direction | Correlation | Asset Class | Co-movement | Action |
|---|---|---|---|---|---|
| AUD/JPY | ▲ Direct | +0.88 | FOREX | Moves with | → View |
| AUD/USD | ▲ Direct | +0.88 | FOREX | Moves with | → View |
| USD/JPY | ▼ Inverse | −0.47 | FOREX | Moves against | → View |
| AUD/NZD | ▲ Direct | +0.45 | FOREX | Moves with | → View |
| XAU/USD | ▲ Direct | +0.45 | COMMODITIES | Moves with | → View |
Correlation based on 12-month rolling window. Click any symbol to view its Sigmanomics forecast page.
THE RELEASE
RBA Trimmed Mean CPI YoY (Australia) was reported at 3.6% in October 2026. This matched the market consensus of 3.6% exactly. The reading rose from the previous value of 3.5%. Trailing 12-month context per ETL data through October 2026. Over the past 12 months, the indicator has averaged 3.56%, ranging from 3.4% to 3.7% across 7 releases. This is classified as a high-impact indicator released on a monthly basis.
WHY IT MATTERS
The trailing three releases averaged 3.63%, up from the prior three at 3.53%. In October readings over the past 3 years, RBA Trimmed Mean CPI YoY has averaged 3.4%.
THE MODEL'S TAKE
Historically, this indicator is positively correlated with AUD/JPY (Bullish AUD). A secondary relationship exists with AUD/USD, positively correlated (Bullish AUD). Over the last 12 releases, the Sigmacast model's median absolute error is 0.09%.
WHAT TO WATCH NEXT
The next release is scheduled for November 25, 2026. Same-country events in the next 14 days include CFTC AUD speculative net positions (Oct 30) and Building Permits MoM (Nov 2).
Auto-generated from current model state · Refreshes on each release · Last update October 2026.
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RBA Trimmed Mean CPI YoY - AU
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About RBA Trimmed Mean CPI YoY — Australia
DEFINITION
The RBA trimmed mean CPI YoY is a key financial indicator used by the Reserve Bank of Australia to measure inflation and price stability. It calculates the average change in consumer prices over a 12-month period, excluding extreme price movements in order to provide a more accurate representation of underlying inflation trends. This indicator is closely monitored by policymakers and investors as it can impact interest rates and overall economic growth.
WHY THIS INDICATOR MATTERS
Inflation prints feed directly into central-bank policy expectations and real-yield calculations, and are among the most rate-sensitive releases on the calendar. Surprises against consensus can drive short-term moves, particularly when the print breaks an established trend. Released monthly.
WHAT CHANGED THIS MONTH
Latest reading (Sep 2026): actual 3.7 %, consensus 3.6 %. Prior reading (Aug 2026): 3.6 %. Before that (Jul 2026): 3.6 %.
WHAT'S NEXT
Sigmacast's 1-month forecast points to a similar reading versus the latest print, with the 3-month outlook reinforcing that direction. Both horizons are aligned bullish for this indicator, suggesting a consistent trend signal. Trend-driven dynamics are the primary tailwind in the current projection. This indicator correlates most strongly with AUD/JPY (Bullish AUD, r=0.88) — a useful reference for forex-focused traders.
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Economic Calendar - AU Events
| Thursday, October 29, 2026 | Actual | Previous | Consensus | Sigmanomics Rolling-Surprise Forecast | Impact | ||
|---|---|---|---|---|---|---|---|
| 00:30 | AU | Import Prices QoQ | -1.1 | 5.7 | 1.3 | 0.10 | Low |
| 00:30 | AU | Export Prices QoQ | 1.4 | 1.1 | 1.3 | 1.35 | Low |
| Friday, October 30, 2026 | Actual | Previous | Consensus | Sigmanomics Rolling-Surprise Forecast | Impact | ||
| 00:30 | AU | Private Sector Credit YoY | 8.4 | 8.4 | 8.2 | 8.32 | Low |
| 00:30 | AU | Housing Credit MoM | 0.4 | 0.4 | 0.4 | 0.43 | Low |
| 00:30 | AU | Private Sector Credit MoM | 0.6 | 0.6 | 0.5 | 0.57 | Low |
| 00:30 | AU | Producer Price Index QoQ | 1.1 | 1.3 | 1 | 1.27 | Medium |
| 00:30 | AU | Producer Price Index YoY | 3.6 | 3.6 | 4.5 | 4.55 | Low |