Economy March 18, 2026

Treasurer Signals Tax Overhaul in May Budget as Middle East Conflict Threatens Inflation and Growth

Pre-budget address outlines three-package plan to build buffers, lift productivity and pursue tax changes amid Treasury risk analysis

By Nina Shah
Treasurer Signals Tax Overhaul in May Budget as Middle East Conflict Threatens Inflation and Growth

Australia's Treasurer will prioritise fiscal savings, productivity measures and tax reform in the May budget to prepare for an inflation shock and a potential drag on growth linked to a prolonged Middle East conflict, according to excerpts of his pre-budget remarks. A Treasury scenario warns the conflict could add 1.25 percentage points to inflation and subtract 0.6% from output in 2027, reinforcing recent central bank rate action.

Key Points

  • Government will centre May budget on three packages: more savings to build fiscal buffers, boosting productivity, and tax reforms - impacts public finances and fiscal policy outlook.
  • Treasury analysis warns a prolonged U.S.-Israeli war on Iran scenario could add 1.25 percentage points to inflation and reduce output by 0.6% in 2027 - relevant to inflation expectations and monetary policy.
  • Central bank raised rates recently as inflation risks persisted; potential tax changes, including debates over the capital gains tax discount, could affect property investors and housing market-related sectors.

Sydney, March 18 - Australia’s Treasurer will press for deeper tax reforms in the government’s forthcoming May budget as part of a broader agenda to shore up the economy against potential inflationary shocks and a possible economic hit from escalating conflict in the Middle East.

Delivering a pre-budget speech on Thursday, the Treasurer said the budget preparations would concentrate on three distinct packages: increasing savings to build fiscal buffers, measures to raise productivity, and tax reform. Excerpts of the speech that were made available indicate the government is positioning those three strands as the central pillars of its fiscal response.

A recent Treasury analysis cited in the speech highlights the economic stakes. Under a more prolonged scenario, the analysis found that a U.S.-Israeli war on Iran could add 1.25 percentage points to inflation and reduce economic output by 0.6% in 2027. The Treasurer referenced that assessment when framing the need for precautionary fiscal measures.

"The conflict in the Middle East is a stark reminder of how quickly the global economic outlook can change," the Treasurer said. "All this economic uncertainty and volatility is a reason for more reform, not less. It’s a reason to go further, not slower."

The Treasurer did not specify the precise tax measures that will appear in the May budget. Local reporting has linked potential changes to the capital gains tax discount, which currently provides substantial concessions for property investors, but no formal announcements were made in the pre-budget remarks.

The speech also referenced recent monetary policy developments, noting that the central bank had raised interest rates on Tuesday in response to the risk that inflation could remain elevated for longer. That tightening in policy was presented as part of the broader context driving the government's emphasis on fiscal resilience and reform.

By centring the upcoming budget on savings, productivity and tax reform, the Treasurer is signalling a multi-pronged approach aimed at strengthening fiscal buffers, supporting medium-term growth and addressing potential distributional and efficiency issues within the tax system. Details on the scope and timing of any tax measures will be set out in the full May budget.


Summary: The Treasurer announced a three-part focus for the May budget - fiscal savings, productivity measures and tax reform - motivated in part by a Treasury scenario that forecasts higher inflation and a modest GDP hit in 2027 if Middle Eastern hostilities intensify. The central bank's recent rate increase was cited as additional context for the need to act.

Risks

  • Inflation shock from a prolonged Middle East conflict could raise consumer prices further - impacts monetary policy, bond markets, and real incomes.
  • A projected 0.6% reduction in economic output in 2027 under a sustained conflict scenario - risks to growth-sensitive sectors such as retail, tourism and business investment.
  • Uncertainty over the scope and shape of tax reforms, including potential changes to the capital gains tax discount - implications for property investors, housing market dynamics and asset valuations.

More from Economy

Leavitt Says Reopening Hormuz Aids NATO More Than U.S.; Comments Touch on Iran, Nuclear Options and China Trip Mar 18, 2026 Uzbekistan central bank keeps policy rate at 14%, flags possibility of tighter stance Mar 18, 2026 Macquarie Pulls Back from Kuwait Pipeline Sale Citing Iran Conflict as Volatility Weighs on Gulf Deals Mar 18, 2026 UK House Price Growth Seen Slowing as Rate-Cuts Slip Off the Table Mar 18, 2026 U.S. Equity Futures Slip After Stronger-Than-Expected Producer Inflation Reading Mar 18, 2026