Top 10 Biggest Banks in Australia by Asset Size in 2025

1. Commonwealth Bank of Australia (CBA)

Website: Commonwealth Bank of Australia

Still holding the top spot, the Commonwealth Bank of Australia continues to lead in asset size. With extensive investments in digital innovation, wealth management, and international expansion, CBA’s robust balance sheet underscores its long-standing market dominance.

2. Westpac Banking Corporation

Website: Westpac

Westpac remains one of Australia’s largest banks by asset size. The bank’s diversified portfolio—ranging from consumer banking to corporate finance—has helped it maintain a strong asset base, even as it continues to invest in sustainable finance initiatives.

3. Australia and New Zealand Banking Group (ANZ)

Website: ANZ

ANZ’s strategic expansion in the Asia-Pacific region has contributed significantly to its asset growth. In 2025, its strong emphasis on digital transformation and international trade finance has bolstered its ranking among Australia’s financial giants. Notably, ANZ has also expanded its portfolio through strategic acquisitions, including the recent acquisition of Suncorp.

4. National Australia Bank (NAB)

Website: NAB

National Australia Bank has consistently grown its asset base through a focus on innovative banking solutions and customer-centric services. In 2025, NAB’s substantial investments in technology and sustainable finance further secure its position as one of the country’s top banks by assets.

5. Macquarie Group

Website: Macquarie Group

Macquarie Group continues to punch above its weight with a strong global presence in investment banking and asset management. Its diverse business model and forward-thinking strategies have helped it secure a top-five ranking in asset size in Australia.

6. Suncorp (Now Part of ANZ)

Website: Suncorp Bank

In a major industry shake-up, Suncorp was acquired by ANZ, further consolidating the banking sector in Australia. Previously recognized for its blend of traditional banking and innovative financial services, Suncorp’s integration into ANZ has bolstered the latter’s asset portfolio and expanded its product offerings.

7. Bendigo and Adelaide Bank

Website: Bendigo and Adelaide Bank

Bendigo and Adelaide Bank’s focus on community banking and responsible lending has fostered steady asset growth. Its commitment to reinvesting in local communities has not only enhanced its reputation but also contributed to its solid asset performance in 2025.

8. Bank of Queensland (BOQ)

Website: Bank of Queensland

The Bank of Queensland continues to serve its customers with a strong emphasis on personalized service and innovation. BOQ’s steady asset growth reflects its adaptability and strong regional roots, keeping it among the top-tier banks in Australia.

9. ING Australia

Website: ING Australia

ING Australia remains a standout in digital banking. With a focus on efficiency and a low-cost operating model, ING has grown its asset portfolio significantly, appealing to a tech-savvy clientele and solidifying its position in the competitive landscape.

10. HSBC Australia

Website: HSBC Australia

Rounding out our top 10 is HSBC Australia. With a strong focus on international business and wealth management, HSBC leverages its global network to enhance its asset base, offering comprehensive financial services to a wide array of customers.

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Final Thoughts

The rankings for 2025 highlight the ongoing strength and diversity of Australia’s banking sector. These institutions not only manage vast asset portfolios but also continue to innovate and adapt in a rapidly changing financial landscape. The recent acquisition of Suncorp by ANZ underscores the trend towards consolidation in the industry, which may further reshape market dynamics. Whether you’re choosing a bank for personal use or analysing market trends, understanding the asset sizes and strategic initiatives of these banks provides valuable insights into their long-term stability and growth potential.

Disclaimer: The asset rankings presented here are based on the most recent data available in 2025. Market conditions and asset sizes can fluctuate, so it is always advisable to review the latest financial reports and consult with financial professionals before making any investment or banking decisions.