Federal Tax Controversy

Facing an IRS Audit, Tax Dispute, or Serious Federal Tax Enforcement Matter?

Federal tax counsel for individuals, businesses, nonprofit organizations, estates, trusts, and fiduciaries facing serious IRS disputes, civil or criminal federal tax investigations, and related federal tax litigation.

Complimentary Initial Case Screening

Limited to conflicts, matter fit, and potential engagement. Substantive legal advice is provided only after engagement.

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Washington, D.C. Office

800 Connecticut Avenue, N.W.
Suite 300
Washington, D.C. 20006

Direct: +1 202-870-1977

Tysons Office

1750 Tysons Boulevard
Suite 1500
McLean, Virginia 22102

Direct: +1 703-403-1488

Chase Sizemore, attorney at Chase Counsel PLLC

Attorney Chase Sizemore, JD, LLM

Principal, Chase Counsel PLLC

Georgetown Tax LLM | Former KPMG Auditor

U.S. Tax Court | Columbia University Graduate Studies

National Institute for Trial Advocacy (NITA) Diploma

30+ Years of Legal Experience

When the stakes are high, the issue is not tax preparation. It is representation.

What We Handle

IRS Examinations & Appeals

Audits, administrative Appeals representation, and examination disputes.

Tax Court & Tax Litigation

Notices of deficiency, U.S. Tax Court 90-day letter representation, refund litigation, and civil Department of Justice tax matters.

IRS Collections

Collection Due Process proceedings, levies, and Trust Fund Recovery Penalties.

Criminal Tax Matters

IRS Criminal Investigation, federal grand jury matters, and criminal tax defense representation.

Civil Tax Penalties

Accuracy-related penalties, reasonable-cause defenses, civil fraud penalties, and related penalty disputes.

IRS Summonses & Subpoenas

IRS summons and federal subpoena matters.

FBAR, FATCA & Voluntary Disclosures

FBAR and international tax controversy matters, Form 8938, voluntary disclosures, and related reporting issues.

Foreign Assets, Accounts & Transactions

Foreign financial accounts, business interests, trusts, gifts, inheritances, and other cross-border federal tax reporting issues.

International Information Returns & Penalties

Forms 5471, Form 5472 penalties, Form 3520 penalties, 3520-A, 8938, 8865, 8621, and related international-information-return penalties.

Cross-Border Tax Controversies

IRS examinations, penalties, treaty issues, and disputes involving foreign income, assets, entities, cryptocurrency tax controversy, and other cross-border transactions.

Selected matters only. The firm does not provide routine tax-return preparation services.

Request an Initial Case Screening

Before you hire a lawyer, know who you are actually hiring.

Why Clients Choose Chase Counsel

Georgetown Tax LLM | U.S. Tax Court | Former KPMG Auditor | Columbia University Graduate Studies | 30+ Years of Legal Experience

Chase Counsel is not a high-volume tax-resolution practice.

Attorney Chase Sizemore personally evaluates and leads each matter, drawing on more than thirty years of legal and advisory experience. He earned an LLM in Taxation from Georgetown University and previously worked as an auditor at KPMG. He is admitted to practice before the United States Tax Court, completed graduate studies at Columbia University, received advanced trial-advocacy training through the National Institute for Trial Advocacy, and has nearly two decades of professional experience in South Korea and China.

Outside his law practice, he founded and leads Teach Them To Fish Foundation, which builds and supports primary schools in rural Cambodia and Uganda for vulnerable children, with particular emphasis on girls' education. His humanitarian service has been recognized with the U.S. Presidential Lifetime Achievement Award, the Royal Order of Cambodia medal, and eight Cambodian Sthapana Cheat gold medals.

His published and forthcoming work includes the legal treatise Nonprofit Stewards, the memoirs The Road to Kitgum and Where the Red Earth Broke, and numerous legal and scholarly articles.

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