ASB is facing a fine of around $6 million for breaching anti-money laundering rules.
Banks are required to do their due diligence with their money, in order to comply with existing legislation - but ASB hasn't followed the right systems.
NZ Herald Wellington business editor Jenee Tibshraeny explained further.
LISTEN ABOVE

Carl Taylor: Combined Building Supplies CEO says most builders feeling fuel price increases
03:03

Sam Dickie: Fisher Funds expert on the ongoing economic costs of the Iran war
03:34

Chris Quin: Foodstuffs North Island CEO on farmers raising questions over supermarket food prices
06:08