“The Internal Revenue Service is collecting a lot more than taxes this year — it’s also acquiring a huge volume of personal information on taxpayers’ digital activities, from eBay auctions to Facebook posts and, for the first time ever, credit card and e-payment transaction records, as it expands its search for tax cheats to places it’s never gone before. The IRS, under heavy pressure to help Washington out of its budget quagmire by chasing down an estimated $300 billion in revenue lost to evasions and errors each year, will start using “robo-audits” of tax forms and third-party data the IRS hopes will help close this so-called “tax gap.” But the agency reveals little about how it will employ its vast, new network scanning powers. Tax lawyers and watchdogs are concerned about the sweeping changes being implemented with little public discussion or clear guidelines, and Congressional staff sources say the IRS use of “big data” will be a key issue when the next IRS chief comes to the Senate for approval. Acting commissioner Steven T. Miller replaced Douglas Shulman last November.”