Business loan books climbed to $962 billion at the end of 2025

According to the Australian Prudential Regulation Authority (APRA), the top ten authorised deposit-taking institutions (ADIs) reached a combined $962 billion loan book in December 2025. Agile Market Intelligence has plotted the publicly available APRA data to visualise movements in the leading market, revealing that Majors’ share of the total business loan book is 87%. They are joined in the top 10 by several foreign banks, such as the Bank of China and MUFG, which have driven growth towards the end of the year.

Key stats you need to know

• The top 10 non-financial ADIs’ loan books totalled $962 billion for December 2025.
  
  
• Bank of China showed the strongest percentage growth rate (2.36%) across the board.
  
  
• 7 out of the 10 largest business lenders saw positive growth for the month. 

Bank of China and MUFG outpace Majors in growth rate

• Bank of China (2.36%) and MUFG (1.34%) showed faster growth percentage than some of the 4 Majors.
  
  
• Japanese lender Sumitomo Mitsui Banking Corporation had the largest loan book among the mid-tiers, valued at $23.95 billion, despite having the slowest growth rate at -5.17%.

After recovering from a dip in previous months, the Bank of China rebounded with the fastest variance growth across the board (2.36%). Similarly, MUFG boasted a variance rate of 1.34%, tied with CBA on having the third fastest growth among the top 10 ADIs. Aside from them, Macquarie was the only other mid-tier to have a positive growth rate at 0.98%.

By contrast, Sumitomo Mitsui had the slowest growth at -5.17%, in spite of contributing the largest loan book share among the mid-tiers ($23.95 billion). Likewise, Rabobank and Bendigo and Adelaide also contracted towards the end of last year, with growth rates of -1.77% and -0.66%, respectively.

ANZ declines by -0.16% in December 2025

• NAB reached the largest sum of non-financial business loans at $260.57 billion.
  
  
• Westpac had the most growth variance at $3.75 billion across the board, with a total loan book of $194.48 billion.
  
  
• The 4 Majors occupied 87% of the total loan book share.

Three Majors showed positive growth variance in December, namely NAB (0.82%), CBA (1.34%), and Westpac (1.93%). Westpac, in particular, had the second highest growth variance among the top 10 ADIs, as well as the largest variance valued at $3.75 billion. By contrast, ANZ declined by -0.16%, consistent with how this bank saw negative growth in its owner-occupied housing loan books. However, this lender still contributed the fourth largest loan book valued at $149.38 billion. In totality, all four Majors combined contributed 87% of the total loan book share, valued at $837.14 billion, indicating the market was still dominated by these Major banks. 

About the research

The figure in this article was drawn by Agile Market Intelligence from APRA’s monthly ADI statistics to December 2025. The dataset covers total loans to non-financial businesses across Authorised Deposit-Taking Institutions (ADIs). For this analysis, Agile plotted publicly available data to show movements in loan books and market share to identify the top 10 business lenders.

Agile also conducts Broker Pulse: Commercial Lending, a community-driven benchmarking initiative capturing the experiences of commercial and asset finance brokers across Australia. The report includes data across asset finance, business loans, and commercial mortgages, and is conducted by Agile Market Intelligence.

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