After reporting a profit surge this morning, ANZ's share price has dropped more than 4 percent.

The New Zealand arm's net profit for the year to September was almost 2.3 billion dollars - a rise of 20 percent on the previous year.

And during the cost of living crisis, it's made a cash profit of more than two billion - up 8 percent on the previous financial year.

Chief executive, Antonia Watson, says she's surprised the share price dipped after such a strong result.

LISTEN ABOVE

• ANZ half year profit up 18 per cent to near $1.1 billion