IAG New Zealand's underlying earnings outperformed the group. IAG's total insurance profit was down 13 per cent at A$1.22b as a number of storms in Australia boosted payouts on natural peril events. Net profit was up 17 per cent at A$1.08b, including a A$200m gain on the sale of its operations in Thailand.
The parent company's board declared a final dividend of 20 Australian cents per share, taking the annual payout to 37.5 cents, up from 34 cents a year earlier. That included a 5.5 cent special dividend.
The ASX-listed shares dropped 4.2 per cent to A$7.74 in early trading.
The local division earnings were also boosted by reserve strengthening last year not being repeated. Investment income on reserves rose to A$36m from A$9m a year earlier.
IAG New Zealand's consumer premiums rose 4.9 per cent in New Zealand dollar terms, led by increased rates and volumes for private motor policies and higher rates for home policies. Business premiums rose 5.5 per cent, led by higher rates and volumes for commercial vehicle policies.
The local company's premium growth lagged that of nearest rival - Suncorp New Zealand - which yesterday reported an 8.4 per cent increase.
IAG New Zealand's spending on commissions increased 2.3 per cent to A$179m, whereas Suncorp's acquisition costs climbed 14 per cent to $322 million.
IAG expects the underlying profitability of the New Zealand business to stay strong despite the market remaining competitive in the 2020 financial year.
Sound gross written premium growth is expected "in both consumer and business, comprising a combination of volume growth and rate increases, with the latter expected to be at lower levels than those experienced in FY19," it said.
IAG New Zealand chair Hugh Fletcher will retire from the boards of the local subsidiary and parent company at this year's annual meeting. He has chaired IAG New Zealand since 2003 and joined the IAG board in 2007.