The Reserve Bank of Australia (RBA) raised its cash rate by 25 basis points to 4.6% on Tuesday, reaching its highest level since October 2011 amid ongoing inflation concerns. The increase, broadly anticipated by economists and financial markets, marks the latest step in the central bank’s tightening cycle aimed at curbing rising prices.
Treasurer Jim Chalmers cited the conflict in the Middle East as a contributing factor to inflationary pressures prompting this week’s rate hike. However, others, including Shadow Treasurer Tim Wilson and some economists, have pointed to sustained and elevated government spending as a primary driver of inflation. Analysts suggest that both factors, alongside other economic influences, have played roles in Australia’s inflation dynamics this year.
Global oil prices, a major input to inflation, have surged in recent months, rising from around US$70 per barrel in late June to over US$100 recently. This increase followed the escalation of the Middle East conflict, which also disrupted refining capacity in the region and Russia, maintaining high “crack spreads” between crude oil and refined petroleum products like gasoline and diesel. Additionally, strategic reserves held by the United States— the world’s largest oil producer— and China’s substantial imports have tightened, reducing global supply flexibility.
These external pressures have prompted several advanced economies, including the United States, Japan, South Korea, the Eurozone, and New Zealand, to raise interest rates in response to higher inflation. Nevertheless, Australia’s inflation rebound preceded the outbreak of the Middle East conflict by several months. The RBA’s preferred measure of underlying inflation rose from a low of 2.8% in the year to June 2025 to 3.3% by February 2026, before climbing further to 3.6% by July.
Most of the inflationary buildup prompting RBA's earlier rate increases occurred before the geopolitical crisis, pointing to deeper structural factors within the Australian economy. The primary issue lies in an imbalance between aggregate demand—the total spending by households, businesses, and governments—and aggregate supply, the economy’s capacity to meet that demand. Australia’s subdued productivity growth during the past decade has constrained supply expansion, tightening the economy once full employment was reached in 2022 and intensifying inflationary pressures.
On the demand side, public and private spending both played roles. While real growth in government spending on goods and services slowed from over 4% annually in 2023-24 and 2024-25 to about 2% in 2025-26, total government expenses, which include cash payments and cost-of-living relief, have remained elevated. Recent national budget documents show that federal government expenses increased by 5.1% in real terms in 2025-26, only slightly below the 5.6% growth from the previous year. State and territory governments are estimated to have increased spending by roughly 6% in the same period, the highest rise since 2019-20.
Much of the government assistance—such as cash handouts and temporary tax cuts including the halving of fuel excise—was broadly distributed rather than targeted, reaching households across income brackets. Many recipients appear to have spent these funds, effectively bolstering private sector demand and contributing indirectly to inflation.
This complex interplay of global factors and domestic fiscal policy underscores the challenges faced by the RBA in balancing inflation control with economic growth. Observers suggest that political debate over responsibility for inflation risks distracting from the central bank’s mandate, which many argue should be allowed to focus on monetary policy without interference.