Major banks set to announce key figures impacting the mortgage market
Next week marks the start of the earnings season for Australia’s biggest banks, with NAB and Westpac scheduled to announce their results, followed by ANZ the week after. For mortgage brokers, several headline figures will be in focus as they assess the outlook for the sector.
Brokers closely monitor year-on-year growth in mortgage volumes and shifts in market share. These figures provide insight into the competitive landscape and the effectiveness of each bank’s lending strategies.
In the previous round of results, NAB reported a rise in non-performing exposures and a slight decline in net profit, reflecting ongoing pressures in the mortgage market. Westpac’s Australian housing loans grew by 5% over the six months to March 31, while ANZ’s Australian Retail division also saw an increase in lending volumes, despite tougher competition.
Commonwealth Bank (CBA), which reports on a different financial calendar, recorded a 6% annual increase in home loan balances in its 2025 financial year, reaching $664.7 billion.
Market forecasts suggest that mortgage growth will remain subdued, with analysts expecting single-digit percentage increases across the sector as higher interest rates and affordability constraints continue to weigh on demand.
The proportion of loans originated via brokers versus proprietary channels is another key metric for the third-party channel. A higher broker share typically signals strong engagement with the intermediary market and can influence lender strategy and service levels.
At CBA, brokers originated 34% of mortgage flows in the 2025 financial year, though this share reduced to 33% in the second half, with proprietary and Unloan digital loans making up the majority of new lending.
While detailed splits are yet to be released for the upcoming results, recent industry data indicates that broker-originated loans continue to account for more than three-fourths of residential lending, a trend that is likely to persist given ongoing consumer preference for broker advice.
Net interest margin (NIM) also remains a critical measure of bank profitability, reflecting the difference between interest income earned and interest paid out to depositors and lenders.
In the most recent results, NAB’s NIM fell three basis points to 1.7%, attributed to higher wholesale funding costs and increased competition. Westpac’s NIM also narrowed, contributing to a 1% decline in net income, while ANZ reported a six-basis-point decline in NIM across its banking segment and a 10-basis-point contraction in its Australian Retail division.
Analysts expect further NIM compression in the upcoming results, driven by a combination of ongoing lending competition and a tighter funding environment.
Westpac will release its results on Monday, followed by NAB on Thursday. ANZ will publish its own results on Nov. 10. Commonwealth Bank, another one of the Big Four banks, had its full-year results, covering the period ending June 2025, released on Aug. 13.
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