RBA raises rates to 4.6% amid inflation fight; more hikes possible

Australia's Reserve Bank lifted its official cash rate to 4.6% on Tuesday, marking the highest level since 2011 and the fourth increase this year. The decision was unanimous among the nine-member board, a show of resolve that surprised some forecasters who had predicted a split vote. Governor Michele Bullock acknowledged the weight of the decision even as she defended it: the move would add roughly $1,400 annually to mortgage repayments for millions of households already stretched thin by years of rising prices.

The rate rise comes as inflation remains stubbornly elevated. Data expected Wednesday was forecast to show underlying inflation holding at 3.6% annually for the third consecutive month—well above the Reserve Bank's target band of 2% to 3%. Bullock pointed to two major forces pushing prices higher: the broadening conflict in the Middle East, which has driven up global oil prices and rippled through supply chains worldwide, and a surge in artificial intelligence investment that is adding demand pressure to an economy already running hot. She warned that businesses and workers, sensing inflation will persist, may begin lifting their own prices and wage demands in response—a self-reinforcing cycle the bank is trying to break.

Three rate increases earlier in the year have already begun slowing economic activity, Bullock said, but the board judged another was necessary to bring inflation back to sustainable levels within a reasonable timeframe. The statement accompanying the decision left the door open to further hikes: "The Board will continue to do what it considers necessary to bring inflation sustainably back to target, including increasing the cash rate target further if needed." Markets were already pricing in another rise by February 2027, with better than even odds of a move by mid-year.

The political response split sharply along party lines. Opposition leader Angus Taylor called it "a dark day" for mortgage holders and small business owners, but trained his criticism on the government rather than the Reserve Bank. He argued that excessive government spending had stoked inflation in the first place, forcing the central bank's hand. Treasurer Jim Chalmers countered that the Middle East conflict was the primary culprit, a geopolitical shock beyond Australia's control. He acknowledged the pain the decision would cause while pledging the government would manage its budget responsibly and continue rolling out cost-of-living support.

Within an hour of the announcement, Macquarie Bank passed the increase to customers, raising variable home loan rates by 0.25 percentage points effective October 15. Other lenders were expected to follow. For a household with a $500,000 mortgage, the cumulative effect of four rate rises this year translates to thousands of dollars in additional annual interest costs—money that will not be spent on other goods and services, further dampening economic activity.

The Reserve Bank's statement singled out the possibility that the US-Iran conflict could push inflation even higher while simultaneously dragging down global economic growth—a stagflationary squeeze that would leave policymakers with few good options. Bullock's language suggested the bank remains uncertain whether the rate increases already delivered will prove sufficient. The next decision point comes in November, but markets and economists are already bracing for the possibility that Australia's inflation fight is far from over.