How the Global Oil Shock Could Delay Mortgage Rate Relief for Australian Home Buyers
If you’ve been holding out for lower interest rates before making your next property move, the latest economic signals suggest you may need to reconsider your timeline. A deepening global oil shock — driven by conflict in the Middle East — is now feeding directly into Australia’s inflation outlook, potentially delaying any meaningful relief on mortgage rates well into 2027.
Finance Hub & Networks (FinHub), a licensed mortgage brokerage in Sydney, Australia (ACL 573164), breaks down what this means for borrowers across the country.
What’s Happening with Oil Prices and Why It Matters
The current energy crisis is fundamentally different from recent supply disruptions. Unlike the COVID-era logistics bottlenecks or the redistribution of Russian oil following the Ukraine invasion, today’s situation involves a direct reduction in global output — estimated at 8–9 million barrels per day, with gas supply down roughly one-fifth.
Westpac chief economist Luci Ellis noted in her latest weekly report that “the outright fall in global fuel supply has different implications than other recent supply shocks, and the outlook for Australia and the world is rough.” Even with a ceasefire around the Strait of Hormuz, full reopening of shipping lanes remains uncertain, and damage to key infrastructure means a quick recovery in energy prices is unlikely.
How This Affects Australian Mortgage Rates
Higher energy costs don’t just hit the petrol bowser — they ripple through the entire economy. Fuel-intensive transport, manufacturing, and construction all face rising input costs, which flow into broader inflation.
Westpac has revised its interest rate outlook significantly, tipping three rapid-fire 25-basis-point hikes by the Reserve Bank of Australia (RBA) in 2026, potentially lifting the cash rate peak to 4.85%. This is a notable departure from earlier expectations of a lower peak and earlier cuts.
For borrowers, this signals a longer period of elevated mortgage rates and tighter serviceability assessments. However, it’s important to note that economic forecasts can change — if the geopolitical situation stabilises, the outlook may improve.
Construction Costs Are Also Climbing
Preliminary Westpac estimates indicate the cost of constructing a detached home has risen by as much as 10%. For anyone considering a construction loan or purchasing new-build property, this adds another layer of financial consideration to factor into your planning.
What Does This Mean for Different Types of Borrowers?
First Home Buyers
Borrowing capacity is likely to remain constrained under current serviceability buffers. While government schemes like the Home Guarantee Scheme continue to support entry into the market, first home buyers should carefully assess their budget against potential further rate increases. It’s worth understanding both the opportunities and the risks before committing.
Refinancers
If you’re currently on a variable rate, exploring whether your current loan structure still suits your situation could be worthwhile. With rate movement uncertain, some borrowers may benefit from reviewing fixed-rate options — though fixed rates carry their own risks if circumstances change. A thorough comparison across multiple lenders can help identify the most suitable option.
Property Investors
Higher holding costs and tighter lending criteria mean careful cash flow analysis is more important than ever. Property values in Perth and Brisbane continue to surge (up 24.3% and at record highs respectively), while Sydney and Melbourne have cooled — so location and strategy matter significantly.
The Silver Lining for Australia
It’s not all challenging news. Australia’s significant LNG export capacity has provided a degree of insulation from the worst energy shortages affecting other nations. And if the ceasefire holds, both growth risks and inflation pressures could ease over time.
As Ellis acknowledged: “If the ceasefire does hold, downside risks to growth diminish and inflation risks ease… This would be one of the instances where we would be quite happy to be wrong.”
How a Mortgage Broker Can Help You Navigate Uncertainty
In an environment where rate forecasts are shifting and borrowing conditions are tightening, having access to multiple lending options can make a meaningful difference. A broker can compare options across 35+ lenders, review your current loan structure, and help you understand how different scenarios might affect your repayments.
At FinHub, with 350+ five-star Google reviews and over $600 million in loans settled, our award-finalist brokers offer no-obligation consultations to help you explore your options — whether you’re buying your first home, refinancing, or expanding your investment portfolio.
Frequently Asked Questions
Will Australian mortgage rates go up again in 2026?
Some major bank economists, including Westpac, are forecasting further RBA rate hikes in 2026 due to persistent inflation driven by the global oil shock. However, forecasts are subject to change based on geopolitical developments and economic data. Borrowers should consider both upward and downward rate scenarios when planning.
How does the oil shock affect my borrowing power?
Higher interest rates reduce the amount lenders will approve under serviceability tests. Rising living costs from fuel and energy prices can also reduce disposable income, further impacting how much you can borrow. Speaking with a broker can help you understand your current borrowing position.
Should I fix my home loan rate right now?
Whether fixing is right for you depends on your individual circumstances, including your financial goals, budget flexibility, and risk tolerance. Fixed rates offer repayment certainty but may limit flexibility. It’s important to weigh the pros and cons with a qualified broker who can review your full financial situation before making any decisions.
Is now a good time to refinance my mortgage?
In a rising rate environment, reviewing your loan regularly is generally a sound practice. However, refinancing involves costs and considerations that vary by individual. A broker can compare your current loan against options from multiple lenders to help determine if refinancing may be beneficial for your situation.
How is the property market performing across Australia?
Performance varies significantly by location. Perth has seen annual gains of 24.3%, while Brisbane, Adelaide, and Darwin are at record highs. Conversely, Sydney and Melbourne values have cooled. Local market conditions, supply dynamics, and lending environments all play a role in property performance.
Contact Daniel Nguyen at FinHub — 1300 346 482 | 0430 11 11 88 | finhub.net.au
Finance Hub & Networks Pty Ltd — Australian Credit Licence 573164.
Your full financial situation would need to be reviewed prior to acceptance of any offer or product.
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