Westpac Faces Margin Pressure Amid Shifting Deposit Trends in ASX200 Banking Sector

3 min read | May 30, 2025 11:28 AM AEST | By Team Kalkine Media

Highlights 

  • Deposit trends challenge Westpac's retail-heavy model 
  • NAB less impacted due to diverse exposure 
  • Margin pressure could weigh on ASX dividend outlook 

As Australia's banking sector continues to navigate a changing financial landscape, the spotlight has turned to the performance divergence among the major banks listed on the ASX200 index. A key theme emerging is the growing impact of consumer deposit trends on net interest margins, particularly for banks with a strong retail presence. 

Westpac Banking Corporation (ASX:WBC) is experiencing increased margin pressure as more customers opt for higher-yielding deposit products such as bonus saver accounts. This shift is seen as a potential challenge for Westpac due to its significant footprint in the retail banking segment. Analysts suggest that the growing preference for such deposits is forcing banks to offer more competitive rates, thereby squeezing margins. 

The shift is particularly impactful for Westpac because of how its retail savings accounts are structured and priced. Additionally, its strategic push to grow its business banking division adds another layer of complexity, as it balances cost management with growth ambitions. 

According to industry analysis, this shift in deposit mix is estimated to have cost Westpac about 3 basis points in its first-half net interest margin. In contrast, National Australia Bank (ASX:NAB), which has a relatively balanced exposure between retail and business banking, reported a smaller impact of around 2 basis points. 

This marginal difference might appear minor at first glance, but within the highly competitive banking environment and rising deposit costs, such details matter. The implication is that banks with broader diversification and more flexible pricing strategies may be better positioned to manage future margin headwinds. 

The developments come at a time when investors are closely monitoring ASX dividend stocks for income opportunities amid global economic uncertainty. For income-seeking investors evaluating the top dividend payers on the ASX, the ability of banks to maintain strong profit margins is crucial. 

As Westpac navigates these structural shifts, its performance relative to other major banks like NAB could influence its standing within the broader ASX200 index. The coming quarters will be critical in determining whether Westpac can adapt its deposit strategy to withstand the changing tide in customer behavior and competitive banking pressures. 

While the long-term outlook for the banking sector remains anchored by strong fundamentals, the emerging trend in deposit preferences underscores the importance of flexibility and strategic diversification for sustained performance in Australia’s evolving financial landscape. 


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