Australia Inflation Jumps to 4.3% as RBA Rate Hike Looms

Australia’s headline inflation rate rose to 4.3% in the year to September, up from 4.0% in August, as fuel and home-building costs pushed prices higher and strengthened expectations that the Reserve Bank of Australia (RBA) will raise interest rates again next week. Underlying inflation, which strips out the most volatile items, was 3.6%, according to figures from the Australian Bureau of Statistics reported by ABC News and The Guardian.

The result leaves inflation well above the RBA’s 2–3% target band and puts the government under fresh political pressure ahead of a crucial rate decision.

What Is Driving Prices Higher?

Fuel and housing were the main drivers, according to ABC News. Petrol and diesel prices have climbed since the war in the Middle East disrupted oil supplies and shipping through the Gulf earlier this year, a shock covered in our report on tanker attacks in the Strait of Hormuz. The Guardian reported on Wednesday that Australia is paying one of the biggest bills of any country for the global diesel crisis, because it imports most of its refined fuel.

The cost of building new homes also rose, reflecting tight capacity in the construction industry and higher material costs.

Will the RBA Raise Rates Next Week?

Markets and economists now widely expect a rise. The RBA’s Monetary Policy Board has already lifted the cash rate to 4.60% at its September meeting, and The Guardian reported that a further increase would be the fifth rate rise this year. ABC News said many economists expect a 0.25 percentage point move to 4.85% when the board meets in early November.

Despite the pressure on households, the RBA’s chief economist said on Wednesday that Australia was not heading into a recession, according to The Guardian’s live coverage. Higher rates are intended to cool demand, but they also add to mortgage repayments for millions of borrowers.

How Have Politicians Responded?

Treasurer Jim Chalmers blamed the war in the Middle East for driving up prices, saying the conflict was turbocharging inflation through fuel costs. He resisted suggestions that government spending was the main cause, while accepting that the government had a role to play in managing inflation, ABC News reported. He also played down the prospect of further fuel-price relief.

Opposition leader Angus Taylor attacked what he called Labor’s “out-of-control spending” after the figures were released, The Guardian reported. The Coalition argues that cutting spending would ease pressure on prices and on the RBA.

What Does It Mean for Households and Businesses?

• Mortgage holders: A 0.25-point rise would lift repayments on variable-rate home loans, with the increase depending on the size of the loan.
• Savers: Deposit rates tend to rise after RBA hikes, although banks do not always pass increases on in full.
• Businesses: Higher fuel and borrowing costs squeeze margins, especially for transport, farming and construction.
• Jobseekers: A slowing economy can soften hiring, a trend already visible in some sectors, including the NAB job cuts we reported recently.

Australia is not alone. Higher energy prices linked to the Middle East conflict have lifted inflation in many economies this year, and central banks from Canberra to Washington are weighing how far to respond. In the United States, the Federal Reserve is due to announce its own decision on Wednesday afternoon, US time.

What Happens Next?

The RBA board is scheduled to announce its next decision on Tuesday 3 November, followed by its quarterly Statement on Monetary Policy, which will update its forecasts for inflation and growth. The next full inflation release, covering October, is due in late November. For readers new to these terms, our explainer on bull and bear markets covers how rate expectations ripple through share prices.

Featured image: Fuel price board at a service station in Wallsend, New South Wales, by Adamdaley / Wikimedia Commons, CC BY-SA 4.0. File photo; image licensed CC BY-SA 4.0.

Sources

• ABC News — Inflation rate rises to 4.3 per cent in September, raising rate hike expectations (28 October 2026).
• ABC News — Jim Chalmers resists blame for another high inflation result (28 October 2026).
• ABC News — What does 4.3 per cent inflation mean for interest rates? (28 October 2026).
• The Guardian — Australia’s inflation rate rises to 4.3%, fuelling fears of fifth interest rate hike this year (28 October 2026).
• Reserve Bank of Australia — Statement by the Monetary Policy Board: Monetary Policy Decision (September 2026).