Wealthy Norwegians are fleeing the country following a wealth tax increase last year. Røkke, who has a Forbes-estimated net worth of $4.9 billion, had reportedly been the country's biggest taxpayer. Switzerland has long been considered an attractive tax haven for affluent people looking to take advantage of its lower taxes. According to PwC, wealth taxes in Switzerland vary by canton – its 26 regions. It says that the result of this is an "overall personal net wealth tax rate between 0.02% and 1.03%."

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Persons: Dagens, Kjell Inge Rokke Organizations: Service, Nordic, Aker ASA, Forbes, U.S . News Locations: Switzerland, Wall, Silicon, Norway