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Bill Fritton, Jr.

William J. Fritton IV (Bill, Jr.) is a principal of the Back Tax Expert. He joined the Back Tax Expert in 1991. Bill, Jr. began his work in tax resolution under the mentorship of former IRS Revenue Officers. At that time, he also earned his status as a certified Enrolled Agent.

Bill’s Fellowship status from the National Association of Enrolled Agents Education Foundation., combined with his broader knowledge in the realm of Economics, and prior real-world experience in business allows him to best serve his clients. Additionally, he returned to school as an adult, earning his MBA from the University of Maryland so that he could offer tax resolution services with a complete, 360-degree view from tax resolution and IRS negotiation to the broader demands and intricacies of business, marketing, and finances.

Bill is based at the Washington, D.C. headquarters.

  • BS, Economics, Hampden-Sydney College
  • MBA, University of Maryland Robert H. Smith School of Business
  • Enrolled Agent (EA) licensed to represent taxpayers before the Internal Revenue Service
  • Member, National Association of Enrolled Agents (NAEA)
  • Member, American Society of Tax Problem Solvers
  • Graduate Fellow, National Tax Practice Institute
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Bill Fritton, Sr.

William J. Fritton III (Bill, Sr.) joined the Back Tax Expert as a principal in 1988. Bill has extensive experience in financial management, business turnaround, creditor workouts, and IRS/State tax workouts. Prior to joining the Back Tax Expert, Bill served as CFO of a computer leasing company, and as CFO and in other financial positions with GTE and subsidiary operations in consumer electronics, product service, and telecommunications.

Bill is located in the Washington, D.C. headquarters.

  • BS, mechanical Engineering, Norwich University
  • MBA, State University of New York at Buffalo.
  • CPA, Commonwealth of Virginia
  • Member: American and Virginia Societies of Certified Public Accountants
  • Member, American Society of Tax Problem Solvers
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Jack O’Neill

Before founding the Back Tax Expert in 1984, John O’Neill (Jack) worked with the Internal Revenue Service collection division for more than a decade, progressing from field revenue officer to chief of processing and insolvency to group manager, and onto his final position as senior technical advisor. Jack continues to serve the Back Tax Expert as a Senior Advisor.

  • BS, Canisius College
  • Enrolled Agent (EA) licensed to represent taxpayers before the Internal Revenue Service
  • Former Member, IRS Task Force which rewrote the IRS manual on bankruptcy & insolvency proceedings
  • Board of directors, multiple Western New York businesses
  • Investor in local businesses
  • Member, National Association of Enrolled Agents (NAEA)
  • Member, New York Enrolled Agent Society
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Thomas F. DeCaro

Mr. DeCaro’s legal and accounting practice concentrates in resolving tax controversies (audit, collection, tax court), bankruptcy, estate planning, tax preparation and civil litigation in the commercial context. His firm, DeCaro & Howell PC, has extensive experience with all phases of taxpayer representation

  • BA, Catholic University, DC and JD Catholic University, Columbus School of Law, DC
  • Certified Public Accountant (CPA), Maryland
  • Bar Admission – DC, 1978 – Maryland, 1981- Virginia, 1992
  • Ernst and Young, Manager, 1987 to 1990
  • Joseph, Greenwald and Laake, PA, Senior Associate, 1985 to 1987
  • Potomac Electric Power Co., Attorney, 1984 to 1985
  • Manor Care, Inc., Attorney, 1982 to 1984
  • Internal Revenue Service, Tax Law Specialist, 1979 to 1982
  • Author, The IRS Tax Litigation Desk Book – A Guide for Tax and Bankruptcy Attorneys Litigating Federal Tax Matters

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8321 Old Courthouse Rd Ste 220

Vienna, VA, 22182


(703) 847-0757


Mon-Fri: 8:00 AM – 5:00 PM

Sat-Sun: Closed

Service Area:

Proudly serving clients nationwide, including: Washington D.C. metro area, Virginia, Maryland, Delaware, North Carolina, and Pennsylvania.