Banks play an integral role in our financial system and economy. One of the major banks in Australia is Bank of Melbourne, which provides a wide range of banking and financial services to individuals and businesses. In this article, we will look at the origins and ownership history of Bank of Melbourne. Understanding who owns and controls banks can give insight into their business priorities and practices. Bank of Melbourne has undergone several mergers and acquisitions over the past few decades, eventually becoming part of Westpac, one of the “Big Four” banks in Australia.
While many customers may simply interact with their local Bank of Melbourne branch, it’s important to recognize that major decisions are made by executives at the highest levels of large financial institutions. Tracing the ownership changes of banks like Bank of Melbourne illustrates the ongoing consolidation of power within the Australian banking sector.
The Early Years
The Port Phillip Bank opened its doors in 1842 as one of the first banks established in the fledgling town of Melbourne. In the early colonial days, the bank facilitated commerce and trade in the growing province. It helped finance infrastructure projects, land purchases, and business activities needed for Melbourne’s development. The bank operated under the Port Phillip name for 85 years.
20th Century Mergers & Expansion
In 1927, the Port Phillip Bank merged with the Commercial Bank of Australia to form the Commercial Banking Company of Sydney. This merger marked a significant turning point in the history of banking in Australia, creating a larger and more powerful financial institution. The newly formed entity, the Commercial Banking Company of Sydney, embarked on a path of expansion and growth, acquiring local banks and branches across Victoria and even expanding interstate. This strategic expansion allowed the bank to increase its market presence and solidify its position as a key player in the Australian banking industry.
By 1982, the bank had rebranded as the National Bank of Australasia, reflecting its broader scope and national reach. The National Bank of Australasia had become one of the largest Australian-owned financial institutions, with a strong reputation for stability and reliability. The merger and expansion efforts of the bank throughout the 20th century laid the foundation for its continued success and growth in the years to come.
Privatization in the 1990s
The economic reforms of the late 20th century had a significant impact on the Australian banking sector, leading to the privatization of several major financial institutions. In 1993, the National Bank of Australasia underwent full privatization, transitioning from a government-owned entity to a privately held bank. This move allowed the bank to operate with more autonomy and flexibility, enabling it to better respond to market dynamics and customer needs.
Four years later, in 1997, the National Bank of Australasia was acquired by National Australia Bank (NAB) in a landmark merger deal. The merger with NAB brought together two major players in the Australian banking industry, creating a larger and more diversified financial institution. As part of NAB, the bank continued to operate under the National Australia Bank brand for over a decade, benefitting the combined strengths and resources of both entities to enhance its product offerings and customer service capabilities.
Spin-Off into Bank of Melbourne
In a strategic move in 2011, National Australia Bank (NAB) decided to spin off its Melbourne retail banking operations into a standalone subsidiary, leading to the revival of the historic Bank of Melbourne name. Despite being fully owned by NAB, the newly established Bank of Melbourne embarked on a journey to rebuild a distinct brand identity and culture that was deeply rooted in the Melbourne market. This strategic decision allowed the bank to focus on catering specifically to the needs and preferences of Melbourne customers, fostering a sense of local connection and community engagement.

Acquisition by Westpac
Following its spin-off from NAB, the Bank of Melbourne underwent a significant change in ownership in 1997 when it was acquired in its entirety by Westpac Banking Corporation. This acquisition by Westpac positioned the Bank of Melbourne as one of the five retail bank brands under the Westpac umbrella, alongside St.George, BankSA, RAMS, and Bank of New Zealand.
The transition to Westpac ownership brought about new opportunities for the Bank of Melbourne to leverage the resources and expertise of a larger banking group while maintaining its focus on serving the Melbourne market. The acquisition by Westpac marked a new chapter in the Bank of Melbourne’s history, aligning it with a leading financial institution and providing access to a broader range of products and services for its customers.
Westpac Ownership Structure
As of today, Westpac Banking Corporation maintains full ownership of the Bank of Melbourne, having acquired the subsidiary entirely in 1997. Within the Westpac Group, the Bank of Melbourne operates as a distinct entity with its own branding, yet it shares common infrastructure and operational resources with other members of the group. This collaborative approach allows for streamlined operations and the efficient utilization of resources across the various brands under the Westpac umbrella.
The ownership structure and operational dynamics within the Westpac Group demonstrate a strategic alignment aimed at encouraging growth, innovation, and customer-centric services across its diverse portfolio of brands, including the Bank of Melbourne.
Impacts on Bank of Melbourne
Technology and Operations
Being owned by one of Australia’s Big Four, banks has altered Bank of Melbourne in substantial ways. Westpac’s resources and scale have enabled significant technology investments in Bank of Melbourne’s digital capabilities and data analytics. Leveraging shared services and IT systems across brands has generated cost savings. However, this size and sophistication has also led Bank of Melbourne to lose some of its local identity.
Customer Experience
On the customer side, the Westpac ownership gives Bank of Melbourne account holders access to an expansive branch and ATM network, along with a wide suite of financial products. But the bank’s priorities are now more aligned to Westpac’s national strategy rather than focused narrowly on Melbourne customers. Overall, Bank of Melbourne continues to perform well with Westpac’s backing, but the effects on customers and brand identity remain mixed.
Historical Transformation
The Bank of Melbourne has undergone dramatic transformation from a small colonial bank to its present-day position as a subsidiary of Australia’s second-largest bank, shaped by decades of mergers, acquisitions, and realignments. Its experience provides insight into the ongoing consolidation of Australian banking and the emergence of the dominant “Big Four”. While the Bank of Melbourne name has persevered, its future path will be directed firmly by the strategies and vision of its owner, Westpac.
Concluding Words
The legacy of the Bank of Melbourne lives on today in its continued service to the Melbourne community. However, its identity is now intrinsically tied to Westpac and its strategic vision for the future of Australian banking. While the bank retains its distinct branding and local market focus, major decisions are ultimately made by Westpac executives who balance the interests of multiple brands and stakeholders.
The Bank of Melbourne’s journey reflects the enormous consolidation of power into the hands of a few major banks that now dominate the Australian financial landscape. Despite roots stretching back to colonial times, the Bank of Melbourne now navigates a path shaped by the realities of modern banking and alignment to the priorities of its parent company.

Neil Duncan, a professional in business innovation and management, has a deep interest in writing and sharing his voice by publishing articles on different b2b and b2c websites/blogs like this. He currently serves as the Vice President in AZ.
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