Eric Schmidt, Google's executive chairman, has come out in support of Google's tax avoidance practises in an interview with the BBC. In 2011, Google made £395m in the U.K and paid just £6m in tax.
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Microsoft owes the Danish government $1 billion in tax from their $1.3 billion purchase of Navision, later rebranded Microsoft Dynamics NAV. Navision nets Microsoft $1.8 billion in revenue annually.
It has been revealed that Facebook will get a refund of $500 million on tax payments, despite making $1.1 billion profit in 2012, according to a report by the Citizens for Tax Justice.