Oil spike raises odds of fourth RBA hike

Renewed US missile strikes on Iran and a new US-declared maritime blockade have lifted oil to the month’s high, raising prospects of another Reserve Bank of Australia interest-rate increase, economists warned. Data showed oil moves have already tightened near-term inflation risk, prompting markets to mark up commodity risk premia.

RBA fourth-hike probability

Global commodity traders are monitoring shipping lanes and tanker insurance rates as channels that could further boost crude prices. Data showed tighter supply expectations often transmit to downstream prices within weeks, a mechanism that could shorten the window for monetary easing in commodity-importing economies.

If the US–Iran conflict is not resolved by July 21, 2026, economists said the combination of higher oil and faster domestic pass-through would substantially increase the chance of a further RBA move; if the dispute cools before that date, pressure on the Bank to tighten further would ease. Markets will watch oil benchmarks and Australian inflation readings for early signs of transmission.

Economists warned that sustained oil above near-term levels could add pass-through to domestic fuel and producer prices, increasing the probability of a fourth RBA hike this year. Officials said a run-up in petrol costs would feed into core inflation measures that the central bank tracks.