At the time of acquisition BankWest was reporting to the Australian Prudential Regulation Authority (APRA) under to Basel I requirements, and under CBA ownership began reporting under Basel II Pillar 3 standardised approach requirements on 1 January 2009.(Refer the CBA 2009 Profit Announcement).
As at 18 December 2008 BankWest owed its Parent HBOS a net figure of $21,076 million, and HBOS had secured a further $3,767 million loan from the RBA (Reserve Bank of Australia) to support the funding of the BankWest loan book.