The Reserve Bank of Australia is poised to deliver a third straight interest rate hike this week, with financial markets pricing in nearly an 80% chance of an increase on Tuesday. While higher rates are unwelcome for the 3.6 million households with mortgages, economists argue the move is necessary to demonstrate the RBA's commitment to controlling inflation, even though the current spike is largely driven by surging oil prices linked to Middle East tensions.
The 'Hormuz Hike' and Inflation Dynamics
One economist has dubbed the potential increase the 'Hormuz hike,' referencing the Strait of Hormuz, a key oil transit chokepoint. Official data last week showed inflation jumped to 4.6% in the year to March, the highest in two and a half years, with petrol prices soaring over 30% in the month accounting for most of the uplift. Despite this, the RBA's primary tool—interest rates—cannot directly address global oil supply shocks.
Economists Weigh In on Necessity
Phil O'Donaghoe, chief economist at Deutsche Bank, acknowledges mortgage holders' frustration but supports a rate hike. 'The irony is that monetary policy can do nothing about inflation in the next six months; it's all the oil price,' he says. However, he believes the RBA must signal its seriousness about the inflation target. 'If they follow through, it's about demonstrating to price and wage setters that they are serious.' Robert Thompson of RBC Capital Markets notes inflation was already 'uncomfortably high' before the Middle East conflict escalated. 'The RBA has one tool, and they need to use it or risk letting inflation go up significantly,' he says.
Impact on Demand and Future Adjustments
By dampening demand through rate rises, the RBA makes it harder for businesses to pass on costs. Johnathan McMenamin of Barrenjoey argues the central bank cannot wait for inflation to self-correct. 'Inflation will always kill itself eventually by damaging real incomes, but the RBA's job is to maintain expectations and smooth the cycle. If they squash demand too much, they can cut later. They can't do nothing.'
