DONE BY AN ENROLLED AGENT
Enrolled agent status is the highest credential awarded by the IRS. The EA credential is recognized across all 50 U.S. states. Attorneys and certified public accountants (CPAs) are licensed on a state by state basis, and are also empowered by the Department of the Treasury to represent taxpayers before the IRS.
"An enrolled agent is a person who has earned the privilege of representing taxpayers before the Internal Revenue Service by either passing a three-part comprehensive IRS test covering individual and business tax returns, or through experience as a former IRS employee. Enrolled agent status is the highest credential the IRS awards. Individuals who obtain this elite status must adhere to ethical standards and complete 72 hours of continuing education courses every three years.