Renamed Scyne Advisory, roughly 1,400 of PwC Australia's more than 9,000 staff have moved over to the new advisory firm.
It said it would tender for a new external auditor as part of "best practice for audit firm rotation".
PwC has audited Westpac since 2002, before which PwC partners and their ancestor firms had audited the bank since 1968.
However, PwC's lead Westpac audit partner assumed the role less than two years ago, in December 2021, according to a Westpac governance statement this month.
A PwC Australia spokesperson said the firm understood the board's decision and was proud of its time as Westpac's auditor.
Persons:
Lewis Jackson, PwC, Robert Birsel, Stephen Coates
Organizations:
REUTERS, Rights, Wednesday, Scyne Advisory, Scyne, Google, Uber Technologies, Facebook, Meta, WESTPAC, Westpac Group, Westpac, PwC's, Thomson
Locations:
Barangaroo, Australia