Low-cost representation of taxpayers with controversies before the U.S. Tax Court

TLI Litigation Services
1717 N St. NW
Washington DC
202-800-9230

TLI Litigation Services 1717 N St. NW Washington DC 202-800-9230TLI Litigation Services 1717 N St. NW Washington DC 202-800-9230TLI Litigation Services 1717 N St. NW Washington DC 202-800-9230
  • Services
  • Practice Areas
  • Trial Practitioners
  • Civil Tax Fraud Defense
  • Tax Advisory
  • Legacy Scholars
  • More
    • Services
    • Practice Areas
    • Trial Practitioners
    • Civil Tax Fraud Defense
    • Tax Advisory
    • Legacy Scholars

TLI Litigation Services
1717 N St. NW
Washington DC
202-800-9230

TLI Litigation Services 1717 N St. NW Washington DC 202-800-9230TLI Litigation Services 1717 N St. NW Washington DC 202-800-9230TLI Litigation Services 1717 N St. NW Washington DC 202-800-9230
  • Services
  • Practice Areas
  • Trial Practitioners
  • Civil Tax Fraud Defense
  • Tax Advisory
  • Legacy Scholars

"Win/NO-LOSS" RECORD

Our Areas of Practice in U.S. Tax Court

  • Pleadings
  • Deficiency Actions
  • Pretrial Negotiations
  • Trial Preparation and Case Presentation
  • Spousal Defenses
  • Identity Theft/Fraudulent Returns
  • Day-Trading Tax Advisory
  • Delinquent Tax Return Preparation
  • Collection and Due Process
  • Offer in Compromise (OIC)
  • Penalty Actions
  • Motions Practice
  • Post-trial Matters
  • Rule 155 Computations
  • Partnership Matters & Actions
  • Civil Tax Fraud Defense in U.S. Tax Court
  • Actions for Declaratory Relief
  • Corporate Tax Actions
  • Partnership Tax Litigation in U.S. Tax Court
  • Taxation of International Transactions (International Tax)
  • Appeals Research of Tax Court Cases Appealed to the Federal Circuit Court of Appeals
  • Foreign Judiciary Advisory, Opinions and Declarations
  • Tax-Exempt Qualifications (Initial or Continuing)
  • Trust Fund Recovery Audits (Payroll Tax)
  • Review for Section 6015(e) Relief ("Innocent Spouse")



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Our Approach: "Be Efficient and Talk to the Experts"

We function as a Federal Tax Law and Tax Advisory Group (NGO- non-governmental organization) and are affiliated with the nation's top Federal Tax Litigation and U.S. Tax Court trial practice research institution in the United States - The Tax Law Institute in Washington, D.C.. Situated in the U.S. Capitol and Honolulu, Hawai'i, and soon to open an office in London, U.K., the Tax Law Institute serves U.S.-based taxpayers with foreign assets as well as U.S. expatriates and overseas investors living in the United Kingdom and the European Union with taxable assets in the U.S. The Tax Law Institute's Litigation Services Group is devoted exclusively to litigating tax controversies in and before the U.S. Tax Court. Our primary function is to prosecute the IRS and to resolve tax matters, where errors of determination give rise to low-, moderate-, and high-liability cases docketed on the calendar of the Court. We also offer a Tax Advisory Service for investors engaged in day trading in the global securities market.


We are known for providing highly informative consultations, expert opinions, and written analysis to domestic and international clients on short notice, and for efficiently expediting settlements and litigation in the United States Tax Court.


Unlike other traditional Tax Law and Tax Advisory Groups, our legal team works closely with the recognized Federal Tax Litigation Scholars. The Federal Tax Research Director, James H. Chapman, is the Joni D. Larson Professor of Federal Tax Research and Practice at the Tax Law Institute. Professor Chapman is a resident scholar of the Internal Revenue Code and U.S. Treasury Regulations. He is involved in some cases. Also, Michael Jerome Stuart, the John F. Dean Professor of Federal Tax Litigation and U.S. Tax Court Trial Practice, who serves as the Tax Law Institute's veteran observer of U.S. Tax Court proceedings, is consulted regularly. These individuals make invaluable contributions to each case. 

A Highly Specialized Team of Tax Court Litigators

Our acclaimed Litigation Services Group is led by group director Louis L.B. Carpenter (pictured), a corporate mergers and acquisitions expert and United States Tax Court Practitioner, admitted to practice in the U.S. Tax Court. He serves as Chief Tax Litigation Counsel. He is also a seasoned Certified Public Accountant and Certified Financial Planner. He has extensive experience as a tax litigator with an impressive record in the Court. Our Associate Tax Litigation Counsel - Jeffrey G. Thompson - is a United States Tax Court Practitioner, admitted to practice in U.S. Tax Court, and an IRS-approved enrolled agent, who developed a specialized practice in the Hollywood entertainment and film industry. He serves as lead Tax Litigation Counsel. 


Richard C. Cunha is a Family Law and Tax Attorney with 30 years of experience in civil trial practice and litigation. He is admitted to practice in the U.S. Tax Court.

Legacy of Success

The Tax Law Institute's Litigation Services was founded to serve tax clients throughout the U.S., Western Europe, the Middle East, and Japan, as well as those persons and entities with taxable assets under the jurisdiction of the United States Tax Court. It has a history of success in legal education, pro bono practice, and U.S. Tax Court litigation. 


In 2012, the United States Department of the Treasury's Internal Revenue Service approved the Tax Law Institute as a provider of continuing professional education for IRS enrolled agents, attorneys, and CPAs. 


Our history in U.S. Tax Court dates back to 1974 when a retired U.S. Tax Court judge, who helped shape our mission, entered tax litigation practice as Government counsel. He worked in both the international and domestic sectors of the Internal Revenue Service. In 1994, he was appointed to the bench from which he retired in 2014. He then joined the Tax Law Institute, where he lectured for 6 years as the Distinguished Judicial Speaker. 


Since then, our litigators have resolved tax matters in and before the IRS and U.S. Tax Court. 


Pictured is Tax Attorney Richard C. Cunha,  Admitted to Practice in the U.S. Tax Court

Forensic Research

Louis Terrero, CPA, MBA, is a U.S. Tax Court Apprentice and Certified Public Accountant who will assist our Litigation Services Group in investigating IRS allegations of civil tax fraud that shift the burden of proof to the IRS in petitioned cases calendared on the U.S. Tax Court docket. He specializes in retirement planning.




 The Tax Law Institute at Washington, DC

Litigation Services & Tax Advisory

1717 N Street NW Washington, DC 20036

+1 (202) 800-9230


"Dedicated to advancing public education and the public interest before the IRS and U.S. Tax Court"


Copyright © 2001-2026 Tax Law Institute Inc.- United States Tax Court Practitioners & Tax Attorneys. We provide Legal Education of Federally-Authorized Tax Practitioners, Pro Bono Legal Services and Federal Tax Litigation Services as a public service - All Rights Reserved. The Tax Law Institute is an IRS Approved Provider of Continuing Education (CE), RS7E4, in Federal Tax Law and Tax Bar and Trial Preparation. TLI is approved to prepare federally-authorized tax professionals, who may claim the federally authorized tax practitioner privilege. Under the law, the term 'federally authorized tax practitioner' (FATP)  means an individual authorized under Federal law to practice before the Internal Revenue Service where the practice is subject to Federal regulation under 31 U.S.C. § 330. The Tax Law Institute has entered into an agreement with the Internal Revenue Service, to meet the requirements of 31 C.F.R., § 10.6(g), covering maintenance of attendance records, retention of program outlines, qualifications of instructors, and length of class hours. This agreement does not constitute an endorsement by the IRS as to the quality of the program or its contribution to the professional competence of the enrolled individual.  Send mail to - Registered Agents Inc. for the Tax Law Institute Inc. - 1717 N Street, N.W., Ste. 1, Washington, D.C. 20036. Telephone +1.202.403.0599. 

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Low-Cost Representation in Tax Court & Tax Advisory

If you do receive a notice of deficiency from the IRS for back taxes, it would be prudent to let us petition the U.S. Tax Court on your behalf. Or, if you've already filed then let us represent you and wait for the case to be sent to the IRS Independent Office of Appeals, where we can possibly settle for less money and avoid any litigation. We've had great success with Appeals and have a 'win/no loss' record before the Court. Or, we can reduce your tax with an OIC. We cite amazingly low flat-fees to fit your budget that can be easily paid online, one-time, and you're done.