An Enrolled Agent (EA) is a federally-authorized tax practitioner who has technical expertise in the field of taxation and who is empowered by the U.S. Department of the Treasury to represent taxpayers before all administrative levels of the Internal Revenue Service for audits, collections, and appeals. Only Enrolled Agents, attorneys, and CPAs may represent taxpayers before the IRS. The license is earned in one of two ways, by passing a comprehensive examination which covers all aspects of the tax code, or having worked at the IRS for five years in a position which regularly interpreted and applied the tax code and its regulations. All candidates are subjected to a rigorous background check conducted by the IRS.