AMP Financial Services New Zealand, which along with its parent AMP Ltd merged with AXA in March last year, reported operating earnings of $99 million for calendar 2011.
The result compares with a pre-merger operating profit of $74 million reported for 2010.
AMP NZ said last year's result included a nine-month contribution from AXA following its merger with AXA's New Zealand business.
The result was underpinned by growth in assets under management from strong cash flows into KiwiSaver, solid life insurance margins, improved customer retention and a one-off gain of $3m when AMP and AXA merged, it said.
Margins margins were affected by lower bond yields and additional investment in systems and support for AMP-aligned advisers into their newly regulated environment. The impact of the Christchurch earthquakes also affected profit margins.
Individual life annual premium income grew to $288m, despite the challenging economic environment, the impact of the Christchurch earthquakes and a competitive market.
Net cash flows of $318 million benefited from increasing flows into KiwiSaver.