In July, the Bank of New Zealand paid $5 million compensation to its customers and was fined $550,000.
Judge Roderick Joyce said: “Westpac took a decidedly economic approach to disclosure issues such as was bound to result in at least the vast majority of its customers being blissfully unaware - or at least less than well informed - of the true overall charges.”
Westpac chief executive Ann Sherry accepted that the bank had breached the Fair Trading Act at the time. She said currency conversion fees were now “extensively disclosed to our customers”.
Affected present and former Westpac customers should receive their refund by December 29. A Westpac spokesman said the bank was “focusing on tracking down all those eligible for reparations”.
He said the number of affected people could be as high as 200,000, with up to 300,000 accounts affected. “People will receive reparations in terms of their expenditure, which depends on the level of activity they had during that period.”