Inflation & Prices•Series ID: GCPIOCPMTMYP•1983–2026
Trimmed Mean Core Inflation - Historical Data
Trimmed mean inflation is calculated as the weighted average of the middle 70 per cent of quarterly price changes in the CPI basket, removing the most volatile 15 per cent of price increases and 15 per cent of price falls.
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Current Statistics & Historical Records
Latest Reading (2026 Q2)
3.6%
Prev (2026 Q1): 3.5%+0.1 pp
Highest Recorded (1983 Q1)
10.7%
Float of the Australian Dollar & Prices and Incomes Accord
Lowest Recorded (2021 Q1)
1.1%
Recorded in 2021 Q1
Long-Run Mean (1983–2026)
3.6%
44 annual observations · Quarterly
Trimmed Mean Core Inflation - Historical Series (1983–2026)
% p.a.Drag to pan, scroll to zoom, or toggle between full annual history (1983–2026) and recent quarterly releases.
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Source: Reserve Bank of Australia (RBA) / Australian Bureau of Statistics (ABS) (GCPIOCPMTMYP) Latest: 3.6 % p.a. (2026 Q2)
Trimmed Mean Core Inflation by Decade (1983–2026)
Decade averages, peaks, and troughs across Australian economic cycles
1980s1983–1989
7.6%
High (1983):9.3%
Low (1984):6.3%
1990s1990–1999
3.0%
High (1990):6.7%
Low (1998):1.8%
2000s2000–2009
3.0%
High (2008):4.4%
Low (2000):2.5%
2010s2010–2019
2.1%
High (2010):2.7%
Low (2019):1.5%
2020s2020–2026
3.5%
High (2022):5.4%
Low (2020):1.4%
Trimmed Mean Core Inflation - Historical Table (1983–2026)
Unit: % p.a. · Source: Reserve Bank of Australia (RBA) / Australian Bureau of Statistics (ABS) (GCPIOCPMTMYP)
| Year | Trimmed Mean CPI (% p.a.) | Year Range (Low – High) | Historical Context / Year Snapshot |
|---|---|---|---|
| 2026 | 3.5% | 3.5% – 3.6% | The Australian Economy in 2026 → |
| 2025 | 3.0% | 2.7% – 3.3% | Disinflation & monetary policy recalibration |
| 2024 | 3.7% | 3.2% – 4.0% | The Australian Economy in 2024 → |
| 2023 | 5.4% | 4.2% – 6.5% | The Australian Economy in 2023 → |
| 2022 | 5.4% | 3.8% – 6.8% | Post-pandemic inflation surge & rapid RBA tightening cycle |
| 2021 | 1.9% | 1.1% – 2.6% | The Australian Economy in 2021 → |
| 2020 | 1.4% | 1.2% – 1.7% | COVID-19 pandemic shock & 0.10% cash rate floor |
| 2019 | 1.5% | 1.5% – 1.6% | The Australian Economy in 2019 → |
| 2018 | 1.7% | 1.6% – 1.8% | The Australian Economy in 2018 → |
| 2017 | 1.7% | 1.7% | The Australian Economy in 2017 → |
| 2016 | 1.6% | 1.5% – 1.7% | The Australian Economy in 2016 → |
| 2015 | 2.2% | 2.1% – 2.3% | The Australian Economy in 2015 → |
| 2014 | 2.5% | 2.2% – 2.8% | The Australian Economy in 2014 → |
| 2013 | 2.5% | 2.3% – 2.7% | The Australian Economy in 2013 → |
| 2012 | 2.2% | 2.0% – 2.3% | The Australian Economy in 2012 → |
| 2011 | 2.5% | 2.2% – 2.7% | China mining investment & Terms of Trade supercycle peak |
| 2010 | 2.7% | 2.2% – 3.1% | The Australian Economy in 2010 → |
| 2009 | 3.5% | 3.1% – 4.1% | The Australian Economy in 2009 → |
| 2008 | 4.4% | 4.2% – 4.8% | Global Financial Crisis (GFC) & emergency rate cuts |
| 2007 | 3.0% | 2.7% – 3.6% | The Australian Economy in 2007 → |
| 2006 | 3.0% | 2.8% – 3.1% | The Australian Economy in 2006 → |
| 2005 | 2.7% | 2.6% – 2.7% | The Australian Economy in 2005 → |
| 2004 | 2.6% | 2.6% – 2.7% | The Australian Economy in 2004 → |
| 2003 | 2.8% | 2.7% – 2.9% | The Australian Economy in 2003 → |
| 2002 | 2.9% | 2.8% – 3.1% | The Australian Economy in 2002 → |
| 2001 | 3.0% | 2.7% – 3.3% | The Australian Economy in 2001 → |
| 2000 | 2.5% | 2.4% – 2.7% | Introduction of the 10% Goods and Services Tax (GST) |
| 1999 | 2.0% | 1.7% – 2.4% | The Australian Economy in 1999 → |
| 1998 | 1.8% | 1.7% – 2.0% | The Australian Economy in 1998 → |
| 1997 | 2.1% | 1.8% – 2.5% | The Australian Economy in 1997 → |
| 1996 | 2.8% | 2.4% – 3.2% | The Australian Economy in 1996 → |
| 1995 | 2.7% | 2.2% – 3.2% | The Australian Economy in 1995 → |
| 1994 | 2.3% | 2.2% – 2.3% | The Australian Economy in 1994 → |
| 1993 | 2.2% | 2.2% – 2.3% | RBA formalises 2–3% inflation targeting |
| 1992 | 2.6% | 2.0% – 3.3% | The Australian Economy in 1992 → |
| 1991 | 4.8% | 3.7% – 5.7% | Early 1990s recession ("The recession we had to have") |
| 1990 | 6.7% | 6.5% – 6.8% | Monetary tightening peak (17.5% Cash Rate) |
| 1989 | 6.3% | 6.2% – 6.7% | The Australian Economy in 1989 → |
| 1988 | 7.2% | 7.1% – 7.3% | The Australian Economy in 1988 → |
| 1987 | 8.4% | 7.5% – 8.9% | October 1987 sharemarket crash |
| 1986 | 8.9% | 8.8% – 9.2% | The Australian Economy in 1986 → |
| 1985 | 7.0% | 5.8% – 8.2% | The Australian Economy in 1985 → |
| 1984 | 6.3% | 5.5% – 7.0% | The Australian Economy in 1984 → |
| 1983 | 9.3% | 7.9% – 10.7% | Float of the Australian Dollar & Prices and Incomes Accord |
Related Australian Economic Statistics
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Compare Trimmed Mean CPI against another indicator →
Source Information & Methodology
- Primary Institution:
- Reserve Bank of Australia (RBA) / Australian Bureau of Statistics (ABS)
- Dataset / Publication:
- Consumer Price Inflation - Trimmed Mean Year-Ended Change
- Series / Table ID:
- RBA Statistical Table G1 (GCPIOCPMTMYP)
- Release Frequency:
- Quarterly
• Primary source: Reserve Bank of Australia (RBA) / Australian Bureau of Statistics (ABS) - Consumer Price Inflation - Trimmed Mean Year-Ended Change (RBA Statistical Table G1).
• Observation frequency: Quarterly. Annual table values represent calendar year averages.
• Series coverage spans 1983 to 2026 (44 annual observations).
APA Citation:Reserve Bank of Australia & Australian Bureau of Statistics. (2026). Consumer Price Inflation - Trimmed Mean Year-Ended Change (G1: GCPIOCPMTMYP). Retrieved October 2026 from https://www.rba.gov.au/statistics/tables/
Frequently Asked Questions: Trimmed Mean Core Inflation
- What is the current Trimmed Mean Core Inflation?
- As of 2026 Q2, the latest recorded Trimmed Mean Core Inflation is 3.6 (% p.a.), compared with 3.5 in 2026 Q1.
- What is the highest and lowest Trimmed Mean Core Inflation ever recorded in Australia?
- Across the historical series (1983–2026), the highest observation was 10.7 (% p.a.) in 1983 Q1, while the lowest was 1.1 (% p.a.) in 2021 Q1. The long-run historical average is 3.6.
- Where is the official Trimmed Mean Core Inflation data sourced from?
- This series is compiled from Reserve Bank of Australia (RBA) / Australian Bureau of Statistics (ABS) (Consumer Price Inflation - Trimmed Mean Year-Ended Change, Series ID: GCPIOCPMTMYP) and is updated on a quarterly basis under CC BY 4.0 International / RBA Terms.