NextFin News - The Australian sharemarket buckled on Thursday as a deepening Middle East energy crisis sent crude prices surging, dismantling investor hopes for a stable interest rate environment. The benchmark S&P/ASX 200 index fell 1.1% by the close of trade on March 12, 2026, as the reality of a sustained "oil shock" began to permeate the domestic economy. With Brent crude hovering near $120 a barrel following the escalation of the U.S.-Iran conflict and the subsequent closure of the Strait of Hormuz, the Australian market is now pricing in a aggressive pivot from the Reserve Bank of Australia (RBA).
The sell-off was broad-based but hit interest-rate-sensitive sectors with particular ferocity. Technology stocks and consumer discretionaries led the decline, while even the major banks—typically beneficiaries of higher margins—struggled to find footing as the prospect of a "hard landing" for the Australian economy grew more plausible. This market retreat follows a period of relative complacency where investors had bet on inflation returning to the RBA’s 2-3% target range by mid-year. Those bets have now been largely abandoned.
RBA Deputy Governor Andrew Hauser provided the catalyst for the shift in sentiment, warning earlier this week that the spike in energy costs would inevitably push headline inflation higher. With the Consumer Price Index already sitting at 3.8%, the sudden jump in petrol prices—now averaging over $2.15 a litre in major capital cities—threatens to unanchor inflation expectations. Money markets have reacted swiftly, with the probability of a 25-basis-point rate hike at the RBA’s March 16-17 meeting jumping to 65%, up from less than 20% just a fortnight ago.
The geopolitical situation has created a classic supply-side shock that leaves central bankers with few palatable options. While U.S. President Trump has authorized the release of emergency oil reserves to stabilize global markets, the physical disruption in the Persian Gulf remains a dominant force. For Australia, a net importer of refined fuels, the impact is immediate. Higher transport costs act as a regressive tax on households, further squeezing disposable income at a time when mortgage holders are already under significant stress from previous tightening cycles.
Economists at Bank of America and other major institutions have begun revising their terminal rate forecasts upward, suggesting that the RBA may be forced into a "catch-up" phase to prevent a wage-price spiral. The risk is that the central bank hikes into a slowing economy, potentially triggering a recession to tame inflation that is being driven by external factors. This "material upside risk," as described by analysts, is what drove the heavy volume of selling on the ASX today.
The divergence between sectors tells the story of a market in transition. While energy producers like Woodside and Santos saw modest gains on the back of higher spot prices, these were insufficient to offset the drag from the broader market. The Australian dollar also faced volatility, caught between its status as a commodity currency and the safe-haven appeal of the U.S. dollar. As the RBA meeting approaches, the focus shifts from whether the bank will act to how aggressively it will signal its intent to combat this new inflationary wave.
Explore more exclusive insights at nextfin.ai.
