CBA tips RBA rate hike tomorrow but warns Iran war makes it a close call. Split RBA board
The desk anticipates a 25 basis point rate hike from the RBA to 4.35% at the May meeting, driven by persistent inflation pressures exacerbated by the ongoing Iran conflict. However, this decision is precarious, with softening consumer sentiment and signs of economic slowdown complicating the outlook. Per the full note from Commonwealth Bank of Australia, the inflation trajectory remains concerning, with headline CPI expected to peak at 5.1%. Market expectations are currently pricing in a 75% probability of this hike, reflecting a significant shift in sentiment since the March meeting.
What the desk is arguing
The desk argues that the RBA is likely to raise rates by 25 basis points to 4.35% due to inflationary pressures linked to the Iran conflict and a tight labor market. Per the full note from Commonwealth Bank, the decision is considered 'line ball' as consumer sentiment shows signs of weakening, complicating the inflation outlook.
Supporting this view, the RBA's inflation expectations have risen, with headline CPI projected to peak at 5.1% and trimmed mean CPI at 3.8%. The labor market remains tight, with unemployment at 4.3%, which adds urgency to the RBA's decision-making process.
The alternative read would suggest that the RBA might hold rates steady, given the recent softening in consumer sentiment and the trimmed mean CPI miss of 0.8% for Q1 2026, which was below expectations of 0.9%. This indicates that the economic impact of previous rate hikes is beginning to materialize, potentially giving the RBA pause before further tightening.
Where it sits in our coverage
Our consensus target for AUD/USD is 1.075, with a range of 1.04 to 1.12. Notable firms include: - jpmorgan: 1.10 (Mar26) - bofa: 1.04 (Mar26) - citi: 1.12 (Mar26)
This view aligns with jpmorgan, which is also anticipating a rate hike, while bofa holds a more cautious stance, suggesting a lower target. The desk's call sits at the upper end of the consensus range, reflecting a more hawkish outlook compared to some peers.
How other firms see it
Firms aligned with the desk's view include jpmorgan and citi, both forecasting a rate hike in line with the RBA's inflation concerns. In contrast, bofa expresses skepticism about the need for further tightening, citing potential economic slowdown risks.
Watch the AUD/USD trajectory as it may reflect the RBA's rate path, particularly in light of the Iran conflict's impact on energy prices and inflation expectations. The interplay between these factors will be crucial in shaping market sentiment moving forward.
Key takeaways
- 01CBA expects a 25bp rate hike from the RBA to 4.35% amid inflation concerns.
- 02Inflation is projected to peak at 5.1%, complicating the RBA's decision-making.
- 03Consumer sentiment is softening, which may impact future rate decisions.
- 04Market pricing indicates a 75% probability of the May hike.
Market implications
Traders should monitor the AUD/USD level closely, particularly as it approaches 1.075, which aligns with our consensus target. The market's reaction to the RBA's decision on May 5 will be critical, especially given the current geopolitical tensions affecting energy prices.
Commonwealth Bank expects the RBA to raise rates 25bp to 4.35% in May 5, but warns the decision is line ball given Iran war inflation pressures and softening consumer sentiment. Summary: Commonwealth Bank of Australia economists forecast the RBA will raise its cash rate by 25 basis points to 4.35% at its May board meeting, but described the decision as line ball and more precarious than the March hike The case for a hike rests on inflation remaining too high, a labour market still too tight at 4.3% unemployment, and cost pass-through from the Iran war accelerating faster than expected, per CBA The case for holding has strengthened since March, with trimmed mean CPI printing at 0.8% for Q1 2026, below expectations of 0.9%, alongside sharp falls in business and consumer sentiment and emerging cracks in the Sydney and Melbourne housing markets, per CBA CBA expects the RBA's updated Statement on Monetary Policy to forecast lower GDP growth, higher inflation peaking at 5.1% headline and 3.8% trimmed mean, and higher unemployment, all driven by the Iran war and the higher cash rate profile, per CBA The RBA's February oil price assumption of $64 per barrel has been overtaken by Brent sitting around $110, while the Australian Trade Weighted Index is approximately 3% higher and the cash rate profile is around 60 basis points above the February forecast peak, per CBA After May, CBA expects the RBA to remain on hold as the economy slows under the combined weight of three rate hikes and elevated energy prices, though a swift resolution to the war and lower energy prices would increase the risk of further tightening, per CBA Markets were pricing approximately a 75%+ probability of a May hike at the time of writing, per CBA Commonwealth Bank economists are tipping the Reserve Bank of Australia to lift its cash rate by 25 basis points to 4.35% at the May board meeting underway, but have described the decision as another line ball call, warning that the meeting feels more precarious than the hike delivered in March. The central complication is the Iran war.
Since the conflict began with US and Israeli airstrikes on Iran on February 28, Australia has experienced three distinct knock-on effects: a sharp deterioration in business and consumer confidence, a wave of businesses announcing higher costs and fuel surcharges, and early signs of rising inflation expectations. CBA economists note that the RBA's February oil price assumption of $64 per barrel has been comprehensively overtaken by events, with Brent crude now sitting $110+, a gap that is feeding directly into transport and material costs and accelerating price pressures across the economy. The case for hiking centres on inflation that remains above target with an economy still running above capacity.
Inflation expectations are rising across both consumer and market measures, and unions and the federal government have both flagged support for a 5% lift in minimum and award wages, which CBA sees as adding to the urgency of anchoring expectations. A labour market with unemployment at 4.3% remains too tight to bring inflation back to target without further policy action, and lingering uncertainty over how restrictive the current cash rate actually is adds a further argument for tightening. But the dissenting case has gained ground since March.
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