An enrolled agent, or EA, is entitled to practice before the Internal Revenue Service. The Enrolled Agent is the only designation that clearly designates an expertise in tax matters. Only Enrolled Agents are required to demonstrate to the Internal Revenue Service their competence in matters of taxation before they may represent a taxpayer before the IRS. Unlike attorneys and CPAs, who may or may not choose to specialize in taxes, all EAs specialize in taxation. EAs are the only taxpayer representatives who receive their right to practice from the United States government. (CPAs and attorneys are licensed by the states)