I received IRS letter CP14. Should I be concerned?

Maybe. All IRS letters are meant to scare and threaten in some degree or another. On the grand continuum of scary threats from the IRS, on a scale of 1-10 (1 being ice cold and 10 being liquid hot magma), this letter is a 1. See an example of CP 14 here, and how to handle it.

Travis Watkins
Senior Tax Attorney