Third Rate Hike Looming: What Falling Property Prices and Rising Mortgage Costs Mean for Existing Holders

The Rate Path: From Relief to Concern in Eight Months

In February 2025, the RBA finally began cutting rates — delivering five consecutive reductions that brought the cash rate down to 3.10% by December 2025. For many mortgage holders, it was the first relief they had felt in three years. That relief proved short-lived.

Persistent trimmed-mean inflation of 3.3% — above the RBA's 2–3% target band — combined with a tight labour market and strong wage growth prompted the Board to reverse course. In February 2026, the cash rate was lifted to 3.85%. A month later on 17 March 2026, it was raised again to 4.10% on a narrow 5-4 vote, signalling the Board remains divided but inflation-focused.

The chart above shows two projected paths after today. The base case — shared by CBA, NAB and ANZ — is one more 0.25% hike in May, leaving the cash rate at 4.35% for the remainder of 2026. The bear case from Westpac economists involves three further hikes across May, June and August, pushing the rate to 4.85% — a level last seen in 2008 during the Global Financial Crisis.

How Much More Are You Paying?

The two hikes already delivered in 2026 represent a 0.50% total increase — but many borrowers have not yet felt the full effect as lenders stagger pass-through timing. If May's predicted hike proceeds, the cumulative impact from January 2026 rises to 0.75%.

For context, the average new home loan in Australia is approximately $626,000 (ABS, Q4 2025). Three hikes would add around $293/month to the average new borrower's repayments — or $3,516 per year above what they were paying in January 2026.

Borrowing capacity is also shrinking. Each 0.25% hike reduces the maximum loan an individual on an average wage can qualify for by approximately $12,000 — and $24,000 for a household with two incomes. Three hikes means couples may find their pre-approval limit has fallen by up to $72,000 from where it was at the start of the year.

1.6 Million Households Approaching the Edge

Roy Morgan Research defines mortgage holders as "at risk" of stress when their mortgage repayments exceed a certain proportion of their after-tax household income — even if they are still meeting repayments. In February 2026, 24.9% of mortgage holders met this threshold — roughly 1.317 million Australians.

After the March hike, Roy Morgan projects the at-risk share rises to 26.6% (1.41 million). By April, as lenders stagger pass-through, it reaches 28.8% (1.525 million). If the May hike proceeds, 1.604 million Australians — 30.3% of all mortgage holders — will be at risk of mortgage stress.

A Two-Speed Property Market — But With New Cracks

National dwelling values rose just 0.8% in February 2026 — a sharp deceleration from the 7.3% growth recorded across 2025. But beneath the headline figure, Australia's two-speed property market is becoming more pronounced.

Sydney recorded a 0.3% decline in February — the first monthly fall since mid-2025. Analysis from realestate.com.au projects Sydney could finish 2026 between -2% and -6% on dwelling values depending on how many rate hikes proceed. Melbourne faces a similar trajectory: -1% to -4%. Both cities share the same vulnerabilities — extremely stretched affordability ratios, high investor exposure, and the largest average loan sizes in the country.

By contrast, Perth, Adelaide and Brisbane remain in a different cycle entirely. Supply shortfalls are deep and persistent in all three markets. Even with three rate hikes, the structural demand imbalance is expected to keep values growing — Perth at 5–10%, Adelaide at 2–6%, Brisbane at 1–4%.

The key risk for Sydney and Melbourne is a combination of forced selling by highly stressed mortgage holders and a significant drop in borrowing capacity constraining the buyer pool. Property Update's Michael Yardney notes that 2026 is likely to "split into two distinct phases — strong growth in H1 driven by pent-up demand and government incentives, followed by moderation in H2 as affordability constraints bite."

Long-term, the structural property story remains intact. CBRE projects median apartment rents to surge 24% between 2025 and 2030, and with historical price growth of around 7% annually in well-located capital city markets, the current softness in Sydney and Melbourne is more cycle than collapse.

What Existing Mortgage Holders Should Do Before May

The May 6–7 RBA board meeting is now less than five weeks away. That is a short but meaningful window. Here are the highest-impact actions to take now.