ANZ internet and mobile banking systems, down since early afternoon, have just come back online, spokesman Stefan Herrick told NBR at 4pm.
There was no immediate word on what caused both systems to go down.
Separately, some payments to and from ANZ accounts were delayed last night. Mr Herrick says that problem was resolved and the backlogue cleared by around 8.30am this morning.
The two problems were unrelated, Mr Herrick says.