Bank of New Zealand, the local unit of National Australia Bank, posted a 4.5 per cent gain in cash earnings as growth in housing and business lending, and lower funding costs, drove up net interest income.
Cash earnings from New Zealand banking operations rose to $418 million in the six months ended March 31, from $400 million a year earlier, the lender said in a statement.
Net interest income climbed 7.8 per cent to $804 million.
Net profit, which includes fair value accounting adjustments and other items, rose 28 per cent to $502 million.
The lender's parent reported a first-half cash profit gain of 5.4 per cent to A$3.32 billion, although the operating results were overshadowed by its announcement of an A$5.5 billion rights issue, allowing National Australia Bank to demerge up to 80 per cent of its Clydesdale Bank unit in the UK, selling the remainder to institutions in an initial public offering.