Source: Kapitales Research

Highlights:

• RBA lifts cash rate to 4.35% — but markets warn the worst may still be ahead
• Could borrowing costs climb to 4.85% by Christmas? Top economists think so
• Big Four banks face a tightrope walk as inflation collides with mortgage stress

RBA Hikes Cash Rate to 4.35% — Could It Hit 4.85% by Year-End?

Australia's central bank delivers its third hike of 2026, but with the Iran war disrupting global oil markets, economists warn this tightening cycle may be far from over.

RBA Delivers Third Hike

Australia's cash rate now sits at 4.35% after the RBA delivered another 25 basis point hike — its third this year — wiping out the full cycle of cuts made during 2025. The board voted 8–1 in favour of the move — a sharply hawkish shift from March's narrow 5–4 split — as policymakers responded to a fresh inflation shock driven by the Middle East conflict and persistent domestic capacity pressures. Inflation surged to 4.6% in March, far exceeding the RBA's 2–3% target.

Markets Eye 4.85% by Year-End

Financial markets are now bracing for further tightening. According to Reuters, traders have fully priced in a move to 4.60% by September, which would mark the highest cash rate since late 2011. According to reports, the cash rate could realistically hit 4.85% by year-end, implying two additional hikes if the Iran conflict drags on. With Brent crude surging past US$114 a barrel — up over 50% from pre-conflict levels — the oil shock is rapidly reshaping rate expectations.

AUD Largely Unmoved

The local currency slipped marginally to US$0.7162 following the announcement, and three-year bond futures barely flinched — a subdued response to what was otherwise a hawkish policy shift. The muted currency response reflects the fact that markets had already priced in an 80% probability of a hike. Analysts suggest the AUD may struggle to gain meaningfully from rate differentials while global risk-off sentiment dominates and oil-driven inflation weighs on growth prospects.

Big Four Banks Face Mixed Outlook

Australia’s four major banks—Commonwealth Bank, Westpac, ANZ, and National Australia Bank —could benefit from improved lending margins, but rising pressure on borrowers is becoming an increasing concern. Higher rates typically expand net interest margins, supporting profitability across the sector. However, with borrowers already under pressure, the risk of rising mortgage arrears and default rates is climbing. Investors will closely watch how banks balance loan growth with credit quality, and whether competitive mortgage pricing will erode some of the margin upside in a softening housing market.

Lending Economy Tightens Further

Beyond the banking giants, the broader lending economy is showing clear signs of strain. Small and medium-sized enterprises face materially higher borrowing costs, which could defer capital investment and slow hiring across rate-sensitive sectors. The housing market — already losing momentum — may face additional downward pressure, while business and consumer confidence have crashed amid fears the Iran war could tip Australia toward recession.

What Lies Ahead

The RBA suggested monetary policy is now "well placed to respond," a phrasing markets interpreted as a possible signal to pause. But much depends on the Strait of Hormuz — a vital passage carrying close to 20% of global oil — according to recent reports. A prolonged closure could force the RBA's hand into multiple further hikes. For now, Australia stands at a crossroads — between a soft landing and an extended tightening cycle dictated by geopolitics.

Note- All data presented is based on information available at the time of writing.

Disclaimer for Kapitales Research

The materials provided by Kapitales Research, including articles, news, data, reports, opinions, images, charts, and videos ("Content"), are intended for personal, non-commercial use only. The primary goal of this Content is to educate and inform readers. This Content is not meant to offer financial advice, nor does it include any recommendation or opinion that should be relied upon for making financial decisions. Certain Content on this platform may be sponsored or unsponsored, but it does not serve as a solicitation or endorsement to buy, sell, or hold any securities, nor does it encourage any specific investment activities. Kapitales Research is not authorized to provide investment advice, and we strongly advise users to seek guidance from a qualified financial professional, such as a financial advisor or stockbroker, before making any investment choices. Kapitales Research disclaims all liability for any direct, indirect, incidental, or consequential damages arising from the use of the Content, which is provided without any warranties. The opinions expressed by contributors or guests are their own and do not necessarily reflect the views of Kapitales Research. Media such as images or music used on this platform are either owned by Kapitales Research, sourced through paid subscriptions, or believed to be in the public domain. We have made reasonable efforts to credit sources where appropriate. Kapitales Research does not claim ownership of any third-party media unless explicitly stated otherwise.

Customer Notice:

Nextgen Global Services Pty Ltd trading as Kapitales Research (ABN 89 652 632 561) is a Corporate Authorised Representative (CAR No. 1293674) of Enva Australia Pty Ltd (AFSL 424494). The information contained in this website is general information only. Any advice is general advice only. No consideration has been given or will be given to the individual investment objectives, financial situation or needs of any particular person. The decision to invest or trade and the method selected is a personal decision and involves an inherent level of risk, and you must undertake your own investigations and obtain your own advice regarding the suitability of this product for your circumstances. Please be aware that all trading activity is subject to both profit & loss and may not be suitable for you. The past performance of this product is not and should not be taken as an indication of future performance.

Kapitales Research, Level 13, Suite 1A, 465 Victoria Ave, Chatswood, NSW 2067, Australia | 1800 005 780 | info@kapitales.com.au