An ex-banker and convicted tax cheat who told the IRS how his employer, UBS, helped thousands of wealthy clients duck U.S. taxes has just been awarded $104 million by the U.S. government, a sum his lawyers say is the largest payout ever for a whistleblower. Bradley Birkenfeld, who was released from federal prison six weeks ago, pleaded guilty in 2008 to helping American clients avoid paying federal income and other taxes to the IRS. As part of his plea, Birkenfeld confessed to helping businessman Igor Olenicoff conceal $200 million in assets and evade paying $7.2 million in taxes.

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