There are certain cases that the IRS Criminal Investigation unit seeks out for criminal tax prosecution.  Some of them are identity theft, healthcare fraud, insurance fraud, money laundering, abusive tax schemes, gaming, bankruptcy fraud and a few others. You can be assured that any actions you take during a tax fraud investigation will be held against you in a court of law. Seek out the help of a good tax attorney to represent you!  You’ll want a good tax attorney to represent you and to be your advocate!!