BNZ's latest general disclosure statement (GDS) sheds some light on how the bank managed to comprehensively outstrip its rivals in annual operating income growth.
For the September year BNZ produced a 16% rise in total operating income versus rises of between just 1% and 6% at the country's other big four banks.
The BNZ increase saw its strongest growth come in "other" operating income, which rose 16% to $434 million, compared with a 4% rise in net interest income to $1.565 billion.
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