Improved economic conditions contributed to ASB Bank recording a 27.6 per cent increase in its net profit after tax to $568 million for the year to June 30, the company said.
For the prior year, the result was $445 million, excluding a one-off tax charge of $209 million.
ASB chairman Gavin Walker said New Zealand is continuing along the road to recovery from the global economic downturn, as evidenced by a significant reduction in ASB's impairment charges over the year, which was down 42.4 per cent to $72 million.
Another key factor had been customers continuing to shift from fixed to floating rate loans. The re-pricing of some new fixed rate loans has also contributed. Retail deposits grew by a 7.1 per cent to $33.7 billion.
But Walker said demand for lending had "definitely weakened" as customers continued to choose to pay off debt.