Technology expenses have chewed up the equivalent of four months profit at ANZ's operation in Taiwan, the bank's largest business in Asia.Data filed with the Financial Supervisory Commission shows the bank incurred a loss of NT$664 million (A$22 million) in the month of January 2012.The bank posted a pre-tax profit of NT$2.6 billion (A$84 million) in the year to December 2011.ANZ accounts for a little more than one per cent of the profit of Taiwan's banking industry. Foreign banks in total account for around 15 per cent of industry profits. ANZ is seeking to grow its share of the profit pool by widening its product range, which, at present, is heavily dependent on credit cards. The bank has around three per cent of this market.Paul Edwards, head of corporate communications at ANZ wrote in an email that the loss in January 2012 was the result of a one-time charge relating to the second stage of system migration, following the bank's takeover of the Royal Bank of Scotland's business in Taiwan two years ago.Edwards said these expenses amounted to NT$782 million.Excluding this one-off expense, the pre-tax profit in January would have been NT$118 million.Separately, ANZ chief executive for Asia, Gilles Plante, has outlined a few highlights of the bank's business in the region in an interview with the Financial Review.Thirty-five per cent of ANZ's customers in Singapore and Hoing Kong are offshore customers, Plante told the newspaper.The bank also has relationships with all of the top 30 companies in Hong Kong, while so far 1000 customers have booked transactions in renminbi in the months since ANZ received approval to trade in the domestic currency of China.