Potentially Dangerous Taxpayer (PDT)[1] is a government designation assigned by the Internal Revenue Service (IRS) to taxpayers of the United States of America whom IRS officials claim have demonstrated a capacity for violence against employees of the IRS or other government agencies, contractors or their families. Suspected PDT cases are handled by the Treasury Inspector General for Tax Administration.
The IRS has established the following criteria for assessing a taxpayer as a PDT, any one of which is sufficient for declaring a taxpayer a PDT:
The Internal Revenue Service also designates certain taxpayers as "Caution Upon Contact" taxpayers, or "CAU" taxpayers.[2] The guidelines for the CAU designation are:
In response to an inquiry after the February 18, 2010, suicidal attack on an office of the IRS at Austin, Texas, by Andrew Joseph Stack that resulted in his death and that of an IRS employee, an IRS spokesperson indicated that the IRS also declined to state whether Stack had been designated as a PDT. Mark Pitcavage of the Anti-Defamation League called Stack a lone-wolf "homegrown, self-taught extremist" with possible ties to the Tax Protest Movement.
This is a chart from an IRS report that shows data on quantities:[4]
Calendar Year | PDT Case Closures | PDT Determinations | CAU Case Closures | CAU Determinations | |
---|---|---|---|---|---|
2008 | 960 | 163 | 615 | 601 | |
2009 | 989 | 136 | 706 | 695 | |
2010 | 1,154 | 151 | 774 | 747 | |
2011 | 1531 | 158 | 993 | 967 | |
2012‡ | 691 | 117 | 492 | 473 |
In 2009, Randy Nowak of Mulberry, Florida, was convicted and sentenced to 30 years in prison for attempting to hire a hitman to murder the IRS agent doing his audit.[5]
In other cases, disgruntled taxpayers have enclosed foreign objects with their returns.