Asia-focused banking giant HSBC said on Monday that net profits surged 58 percent to more than $4.15 billion in the first quarter on lower taxes and bad debt charges. However Europe\'s biggest bank added that the group\'s pre-tax gains were pushed down by rises in other exceptional costs including money set aside to compensate customers in Britain who were mis-sold payment protection insurance. Europe\'s biggest bank said that profit after tax for the three months to March 31 rocketed to $4.153 billion (2.88 billion euros) from $2.631 billion in the first quarter of 2010. Adjusted pre-tax profit fell to $5.5 billion from $6.01 billion. It was also below analyst expectations of about $6 billion according to a survey by Dow Jones Newswires. \"Underlying profits held up well against a strong first quarter (in) 2010\" HSBC\'s new chief executive Stuart Gulliver said in an earnings statement published by the London-headquartered bank. \"We were profitable in all regions and customer groups profits increased in each of our faster-growing regions and credit quality improved. \"There was double-digit revenue growth in many of our businesses in the faster-growing regions. We continued to increase customer lending in all regions except North America with strong growth in Asia and Latin America\" Gulliver added. HSBC said that provisions set aside for bad loans dropped 37 percent to $2.4 billion in the quarter. However its cost-income ratio or costs relative to income rose to 60.9 percent well above the group\'s target. The rise reflected $440 million set aside to compensate clients mis-sold payment protection insurance (PPI) as well as changes in the value of HSBC\'s debt. The bank which on Monday said costs would have been flat without the exceptional charges wants to reduce the ratio to 52 percent or less within two years. In reaction to the results shares in HSBC dropped 1.60 percent to 641.3 pence on London\'s benchmark FTSE 100 index which was down overall in morning trade. \"The update is something of a mixed bag allowing investors\' attention to move on to the strategic update later in the week\" said Richard Hunter head of UK Equities at Hargreaves Lansdown Stockbrokers. HSBC publishes a key strategy review on Wednesday and analysts have said that Gulliver who took over the helm of Europe\'s biggest bank in January could use the event to announce major cost-cutting measures. There have also been persistent reports in the British media that the lender has been looking at the possibility of switching its headquarters to Hong Kong from London to reduce the group\'s tax burden. However, The Daily Telegraph newspaper reported on Monday that HSBC had delayed a decision on any potential move until next year. Although its headquarters are in London HSBC was founded in Hong Kong and Shanghai in 1865 and the bank currently sees Asia as its most important region. Gulliver HSBC\'s former head of investment banking whose hiring was announced last September replaced Michael Geoghegan who stepped down after he reportedly lost a boardroom battle for the chairman\'s job.