Resolving
Sensitive Issues
Office of Professional Responsibility
When a tax professional’s license or a firm’s reputation is on the line, the best possible representation is necessary for dealing with government investigators. At Thorn Law Group, we specialize in representing tax professionals, law firms, accounting firms, and other entities being investigated by government agencies concerning ethics issues, preparer penalties, and professional malpractice allegations. Specifically, the firm has extensive experience in representing individuals and firms before the Internal Revenue Service, the Internal Revenue Service’s Office of Professional Responsibility (“OPR”) the Department of Justice (“DOJ”), the United States Tax Court, and other federal and state agencies.
As former attorneys for the Internal Revenue Service, the United States Tax Court, and the Internal Revenue Service’s Office of Professional Responsibility, we know how government agencies’ conduct their investigations. This knowledge enables us to advise our clients through the complicated investigatory procedures and help them present their cases in the best possible light.
At Thorn Law Group, we specialize in representing our clients in the following areas:
- Return Preparer Penalties
- Professional Malpractice Investigations
- Standards of Tax Practice Issues
- IRS Investigations Of Tax Practitioners & Return Preparers
- Representation of Attorneys Before IRS Office of Professional Responsibility
- Representation Of CPAs, Enrolled Agents, Enrolled Actuaries, Enrolled Retirement Plan Agents & Appraisers
- Representation Of Law Firms, Accounting Firms & Other Entities Before The IRS Office Of Professional Responsibility
If you are a tax professional or a professional firm who is currently under investigation by the government, contact the Thorn Law Group today.
For an update on recent OPR enforcement actions against tax professionals and the latest news, click here or visit OPR’s published cases, or published disciplinary actions.


