Trisha Farrow
Trisha Farrow

Partner

    Overview

    Trisha Farrow is a former Internal Revenue Service senior trial attorney with experience in cases involving captive insurance, research and development credits, tax promoter penalties, fraud, and the application of the Tax Code to the cannabis industry.

    During her eight years at the IRS, she provided advice to revenue officers and agents on tax and collection issues that included summons enforcement, lien priority, and whipsaw positions. At the IRS, she received the Lucite Award recognizing her achievement in successfully litigating a case involving tax promoter penalties and developing favorable case law.

    While at the IRS, she oversaw and advised IRS revenue agents and officers across the Western United States on fraud penalty development, research and development credits, and I.R.C. § 280E cannabis related issues. Trisha was also an instructor at a national course designed to train IRS trial attorneys in litigation strategy and trial practice.

    Since her service as a senior trial attorney at the IRS, Trisha has worked to defend, and obtain successful results for her clients, including:

    • Obtaining total defense jury verdict against the IRS and United States in trial involving millions in penalties for allegedly knowingly failing to report foreign bank accounts;
    • Overturning the long-established jurisdictional Tax Court petition filing deadline through briefs and oral argument in the Second Circuit Court of Appeals;
    • Successfully obtaining millions of dollars in ERC refund suit;
    • Reducing and eliminating proposed tax deficiencies and penalties based on allegations of fraud, unreported gambling winnings, unsubstantiated business deductions, unreported digital currency income.

    Practice Areas

    Honors & Awards

    • “Top Lawyer” (Tax Law), PHOENIX magazine, 2025
    • Judge Mary M. Schroder Federal Practice Award
    • Order of the Coif
    • CALI Award (Contracts; Estate & Gift Tax; Writing for Law Practice, Tax Policy, and Civil Right Legislation)

    Bar & Court Admissions

    • Arizona
    • U.S. Tax Court
    • U.S. District Court, District of Arizona
    • U.S. Court of Appeals, Ninth Circuit
    • U.S. Court of Appeals, Second Circuit

    Education

    • J.D., magna cum laude, Sandra Day O’Connor College of Law, Arizona State University, 2015: Order of the Coif; Arizona State Law Journal
    • B.A., magna cum laude, Political Science, Columbia College, 2012

    Professional Memberships

    • State Bar of Arizona

    Reported Cases

    • United States v. Quiel, No. 2:21-cv-00094 (D. Ariz. 2024) (jury verdict in favor of client in case involving millions in penalties for allegedly knowingly failing to report foreign bank accounts)
    • Buller v. Commissioner, 152 4th 84 (2d Cir. 2025) (Second Circuit Court of Appeals opinion finding the section 6213(a) Tax Court petition filing deadline to be a non-jurisdictional, claim-processing rule subject to equitable tolling)
    • Lemay v. Commissioner, T.C. Memo. 2020-59 (involving liability for tax promotion penalties under I.R.C. § 6700)
    • Davison v. Commissioner, T.C. Memo. 2020-58 (involving liability for tax promotion penalties under I.R.C. § 6700)
    • Castaneda v. Commissioner, T.C. Memo. 2018-173 (involving liability for the fraud penalty under I.R.C. § 6663)
    • Potts v. Commissioner, T.C. Memo. 2017-228 (involving international tax issues and theft loss deductions)

    Articles & Presentations

    • “The Not So Simple Estate Plan of Breaking Bad’s Walter White,” 46 ARIZ. ST. L.J. 955 (2014)

    Government Service

    • Attorney, Office of Chief Counsel, U.S. Department of the Treasury, 2015-2023; 2021 Lucite Award, Davison v. Commissioner, T.C. Memo. 2020-58

    Clerkships and Internships

    • Legal Extern, Hon. James A. Teilborg, U.S. District Court, District of Arizona, 2014
    • Legal Extern, Hon. Bridget Bade, U.S. District Court, District of Arizona, 2014
    • Summer Intern, Department of the Treasury, IRS Office of Chief Counsel, 2014

    In the News