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The Express Gazette
Monday, September 21, 2026

Australia Braces for Potential Mortgage Rate Hike as Inflation Surges

Major banks forecast a 0.25% increase next week, citing rising oil prices and persistent inflation.

Business & Markets 2 hours ago
Australia Braces for Potential Mortgage Rate Hike as Inflation Surges

Australian mortgage holders are being warned to prepare for a potential interest rate hike next week, as the nation's three largest banks predict a 25-basis-point increase. Commonwealth Bank, Westpac, and ANZ have all signaled this possibility, with ANZ advancing its forecast from November to September.

This anticipated move by the Reserve Bank of Australia (RBA) comes amid mounting pressure from escalating oil prices and stubbornly high inflation. Adam Boyton, ANZ's head of Australian economics, noted that the RBA is likely to view the surge in oil prices as a significant inflationary shock rather than a drag on economic growth. Consequently, a single 25 basis point hike in September is now considered the most probable outcome, with further increases expected early next year.

Markets are currently pricing in a strong likelihood that the RBA will lift its cash rate to 4.6%, with another increase to 4.85% anticipated in early 2025. Traders also see a considerable chance of the rate exceeding 5% by mid-2025, a level not seen since 2008.

Luci Ellis, Westpac's chief economist and a former RBA insider with over three decades of experience at the institution, highlighted the escalating communication from the central bank. RBA Governor Michele Bullock recently indicated that upside risks to inflation appear to be materializing, a condition previously set in August for potential further rate hikes. Bullock stated on Friday that while economic growth is slowing, some of the inflation risks flagged in August seem to be coming to fruition.

Bullock's testimony to a parliamentary committee in Canberra reinforced the RBA's commitment to controlling inflation, even at the potential cost of employment. She emphasized that persistently high inflation poses a broader negative outcome for the economy. The current inflationary pressures are attributed to a confluence of factors, including the conflict in the Middle East, the burgeoning AI boom, and a strong El Niño weather pattern, all impacting energy, food, and technology prices.

The benchmark Brent crude oil price has remained above $104 a barrel, exacerbated by attacks on Saudi Arabian oil infrastructure. Vivek Dhar, head of commodities at Commonwealth Bank, warned that oil prices could climb as high as $150 a barrel if global supply continues to diminish while China increases its imports. Dhar suggested that current inventory levels could be depleted within five to ten weeks, increasing the risk of dramatic price escalation.

For Australian consumers, this translates to a potential increase in the cost of living, with higher prices expected for petrol, diesel, freight, airfares, and certain groceries. Andrew McKellar, CEO of the Australian Chamber of Commerce and Industry, noted that businesses are facing significant pressure on profitability and cash flow, making them increasingly inclined to pass on rising costs to consumers. This, he warned, risks entrenching inflation.

While higher interest rates and fuel prices could dampen economic growth, the impact of the AI boom on demand has been a factor the RBA did not fully anticipate. Deputy Governor Andrew Hauser commented on the strong and persistent demand driven by the AI and tech boom, in addition to inflation risks from the Middle East. Treasurer Jim Chalmers noted that advanced economies globally are entering an era of higher interest rates, partly due to ongoing geopolitical conflicts pushing up inflation.


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