Australia's central bank raised its benchmark interest rate for the fourth time this year on Tuesday, pushing borrowing costs to the highest level in nearly 15 years as policymakers struggle to contain inflation that remains stubbornly above target.
The Reserve Bank of Australia lifted the cash rate by 25 basis points to 4.60 percent, a decision unanimously backed by all nine voting members of the board. The move was widely anticipated by financial markets, which had priced in a roughly 90 percent probability of a hike ahead of the announcement.
The increase takes the policy rate to its highest point since November 2011, extending a tightening cycle that had been paused at the previous two meetings. Before Tuesday's decision, the central bank had raised rates in February, March, and May, delivering a cumulative 75 basis points of increases that brought the cash rate to 4.35 percent.
In its statement accompanying the decision, the board said inflation remained too high at 3.5 percent and that it wanted to ensure price pressures did not become entrenched across the economy. Underlying inflation, measured by the trimmed mean, was running at 3.6 percent annually as of August, well above the RBA's target band of 2 to 3 percent.
The central bank also flagged that further tightening may be required before the end of the year, signaling that the battle against persistent price growth is far from over. Market pricing before the decision had indicated expectations for another hike by February, with more than a 50 percent chance of an additional move by mid-2027.
Governor Michele Bullock has been sounding hawkish warnings in recent weeks. She cautioned last week that inflation was likely to remain underpinned in the coming months, and that high rates and rising unemployment would be necessary to stem runaway prices. She has also noted that workers and businesses could start lifting their price and wage demands as expectations of persistent inflation take hold.
Bullock is scheduled to hold a press conference at 3:30 p.m. Australian Eastern Standard Time in Sydney, where she will face questions about the central bank's policy trajectory and the economic outlook.
Assistant Governor Sarah Hunter offered a similar warning last week, reinforcing the message that the RBA views inflation risks as skewed to the upside.
The decision lands at a politically sensitive moment for Prime Minister Anthony Albanese's government, which is facing voter discontent over the cost of living. With the cash rate now among the highest in the developed world, the government's ability to convince Australians that it is addressing household financial pressures has been further complicated.
Treasurer Jim Chalmers sought to deflect blame for the inflationary environment on Tuesday morning, pointing to external factors rather than domestic fiscal policy. In an interview with Channel Seven, he argued that the escalation of conflict in the Middle East and its impact on global oil prices were significant drivers of inflation.
"When you see what's happening with global oil prices, when you see what's happening with the re-escalation of the war in the Middle East, obviously, factually, that is one of the big drivers of that inflation," Chalmers said.
The surge in energy prices stemming from the U.S.-Iran war has spilled over into multiple sectors of the Australian economy, adding to domestic inflation pressures that were already elevated due to local demand outstripping supply. The treasurer's comments reflect the government's strategy of attributing price pressures to global shocks rather than its own spending programs.
However, critics have argued that the Albanese government's expansionary fiscal policy has stoked excess demand, compounding the central bank's challenge in cooling inflation. The tension between fiscal and monetary policy has become a central theme in Australia's economic debate.
ANZ analysts said in a note last week that the ongoing escalation of the Middle East conflict, combined with the RBA's tendency to view oil price increases as more of an inflation shock than a growth shock, made two rate hikes in September and November more likely than one.
They expect another 25 basis point increase in November, which would take rates to their highest levels since 2008. That would place Australia's cash rate near the top of the developed world rankings, surpassed by only one other country.
The prospect of higher rates has already rattled Australian equities. Rising borrowing costs tend to limit appetite for risk-driven assets, and technology and mining stocks are particularly vulnerable to retreats. While heavyweight bank stocks may receive a boost from wider interest margins, the broader ASX 200 index faces near-term losses if Bullock's commentary at the press conference strikes an additional hawkish tone.
The Australian dollar has been a beneficiary of the tightening cycle, with the AUD/USD pair trading up 5.2 percent so far in 2026. The currency hit a four-year high earlier this year as the RBA began raising rates. Any further hawkish signals from the central bank are likely to provide additional support.
Monthly consumer price index data due later this week is expected to show headline inflation rising to 4.1 percent, while core CPI is projected to remain well above the central bank's target range. Those figures will be closely watched for signs of whether the RBA's tightening efforts are beginning to bite.
The central bank's "narrow path" to a hoped-for soft landing from the post-pandemic inflation outbreak has so far failed to tame persistent price pressures in the economy. The question now facing policymakers is how much additional tightening will be required to bring inflation back within the 2 to 3 percent target band without tipping the economy into recession.
Market participants will scrutinize the language in the RBA's statement and Bullock's subsequent remarks for clues about the timing and magnitude of any future moves. The central bank's willingness to signal further hikes suggests that it remains firmly focused on its inflation mandate, even as political pressure mounts over the economic consequences of its decisions.
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