Australia's Inflation Refuses the Polite Exit: RBA Stares Down Hikes

The Reserve Bank of Australia is about to learn an expensive lesson about the perils of premature confidence. Australia's core inflation topped forecasts in July, rising 0.5 percent month-on-month—the largest monthly increase in a year—and bringing the annualized trimmed mean rate to 3.6 percent. For context, the RBA's target sits at 2 to 3 percent. The Bank will not hit that midpoint until early 2028, according to current expectations. That is not a near-term problem. That is a multi-year one.

Market pricing has responded accordingly. Odds for a September rate hike have jumped to 27 percent following the July data. By February 2027, markets are pricing in an 80 percent probability of at least one additional increase. This represents a dramatic repricing from the relief narrative that dominated financial markets just weeks ago. The consensus had settled on a hold at the August meeting, and Governor Michele Bullock dutifully obliged. But here is what matters: she confirmed the Board actually considered both a hike and a hold in August. That is banker-speak for "we are closer to raising than you thought."

This is what policy failure looks like when central banks declare victory too early. The RBA began its tightening cycle in May 2022 from an effective zero rate, lifted the cash rate to 4.35 percent by November 2023, and then sat pat for months while claiming the heavy lifting was complete. The inflation problem, they suggested, would solve itself as supply chains normalized and commodity prices retreated. Inflation pressures were supposed to be transitory. Then persistent. Then moderating. Now they are simply persistent, and the RBA is staring down the prospect of extending its tightening cycle into a world that was not prepared for it.

Callam Pickering from Indeed has articulated the mechanical reality plainly: Australia has a fundamental inflation problem rooted in demand exceeding supply, combined with weak productivity growth. These are not temporary phenomena that respond to one rate-hike cycle. They are structural features of the current Australian economy. The RBA has limited tools to address weak productivity through the policy rate. Raising rates will slow demand, yes. But if productivity does not improve—and there is little evidence the RBA's actions can force that improvement—inflation will remain sticky. The Bank may simply be choosing between a slower economy with inflation still above target or a faster economy with inflation even further above target.

The economic backdrop makes this even more delicious. GDP growth is already expected to be subdued through 2026 as high inflation erodes household disposable income and the previous tightening cycle weighs on investment. If the RBA raises rates again, growth slows further. Unemployment will tick up. Real wages, already struggling against persistent inflation, face renewed pressure. This is the classic central bank trap: the inflation fighting requires exactly the demand destruction that economies with weak productivity growth cannot easily afford.

Gov. Bullock faces a choice that will define her tenure at the RBA. She can hold rates steady, acknowledge the inflation problem is stickier than previously communicated, and watch her credibility deteriorate as markets price in eventual hikes anyway. Or she can raise rates again, accept slower growth as the price of inflation-fighting orthodoxy, and hope that productivity breaks in her favor before unemployment becomes politically untenable. Neither option is pleasant. Both are real.

The September 29 meeting will be the signal moment. Markets have priced in a 27 percent probability of a hike. History suggests that whenever markets are pricing in a nontrivial probability of central bank action, the Bank has already internalized the possibility. The question is not whether the RBA might move. The question is whether Australia's policymakers are prepared to explain to voters that they declared victory over inflation three years too early.