The bank reported that assets under management for its wealth management arm increased by 3.5 per cent during the three months, despite equity markets ending the quarter lower.
The increase was the result of net flows and investment performance as well as the impact of foreign exchange, according to CBA.
Insurance in-force premiums also rose by 2 per cent.
The bank said its group net interest margin was lower, however, with improved wholesale funding costs more than offset by competitive pricing impacts.
The profitability of Bankwest continued to be supported by cost discipline, CBA said, noting it enabled the bank to maintain revenue growth above cost growth.
Underlying trading income was consistent with the 2014 financial year run-rates, according to CBA, with total trading income boosted by a small positive contribution from the Counterparty Valuation Adjustment during the quarter.
