Robert Horwitz

Hochman, Salkin, Rettig, Toscher & Perez, P.C.
(310) 281-3200

Robert Horwitz has over 35 years of experience as a tax attorney specializing in the representation of clients in civil and criminal tax cases, including civil audits and appeals,  tax collection matters, criminal investigations, administrative hearings, and in civil and criminal trials and appeals in federal and state courts. He has served as a member of the Executive Committee of the Taxation Section of the State Bar of California and was Chair of the Taxation Section for the 2015-2016 year.  He was previously Chair of the Tax Procedure and Litigation Committee of the State Bar Taxation Section.

Prior to joining Hochman Salkin Toscher Perez P.C., Mr. Horwitz was with a boutique tax controversy firm in Orange County, where he represented clients in civil and criminal tax cases in the U.S. Courts of Appeal, U.S. district courts, California superior courts, and before the Internal Revenue Service, the California Franchise Tax Board, the Board of Equalization, the Employment Development Department and the Unemployment Insurance Appeals Board.

Before entering private practice, Mr. Horwitz was a trial attorney in the U.S. Department of Justice Tax Division and the U.S. Attorney’s Office in Los Angeles, where he represented the United States in several hundred tax cases, involving areas as diverse as captive insurance companies, tax shelters, trust fund recovery penalties, manufacturers’ excise taxes, employment taxes, criminal investigations, and tax collection. At the Department, Mr. Horwitz received numerous awards, including two Outstanding Trial Attorney awards and a Special Commendation from the Tax Division.

Mr. Horwitz has also represented clients in complex civil and white-collar criminal cases, including civil and criminal bank fraud, wind and thermal energy tax shelters, tax fraud and tax collection matters, trademark, trade secrets, securities, and insurance coverage cases. He was also appointed by the United States District Court in Los Angeles to represent a death row inmate in habeas corpus proceedings.

Mr. Horwitz has been a speaker on tax matters at the UCLA Tax Controversy Institute, the Annual Meeting of the Taxation Section of the California Bar, and the California State Bar Annual Meeting. He has authored articles on tax law that have appeared in diverse publications, including Tax Notes, the Federal Lawyer (the publication of the Federal Bar Association), and the California Tax Lawyer.  His monograph in “Responsible Persons and Fiduciary Liability” was published in the Proceedings of the New York University 75th Institute on Federal Taxation.  He was an invited delegate to the 2015 U.S. Tax Court Judicial Conference.  He is a member of the Planning Committee of the UCLA Tax Controversy Institute.

Mr. Horwitz is a member of the bar in California and in Illinois. He is admitted to practice in the United States District Courts for the U.S. Supreme Court, the U.S. Courts of Appeal for the Seventh, Ninth and Federal Circuits, the U.S. District Courts for the Central, Southern, Northern and Eastern Districts of California, the U.S. Court of Federal Claims and the U.S. Tax Court. He was named a Southern California Super Lawyer 2010, 2011, 2012, 2014, 2015, 2016, 2017 and 2018.

About Us: HOCHMAN, SALKIN, RETTIG, TOSCHER & PEREZ, P.C., enjoys an unparalleled reputation for excellence and integrity in the tax community. For more than 60 years, the firm has been serving clients throughout the United States with federal and state civil tax litigation, defense of criminal tax prosecutions, all forms of tax disputes with the federal, state and local taxing authorities, white collar criminal defense, estate and business planning, and business transactions.

Archived Webinars Offered


Date RecordedNovember 18, 2020  CostFREE  Course Length1.0 hour  Subject AreaTaxes  Course LevelBasic  Instructional MethodGroup Internet Based  PrerequisitesNone  Advanced PreparationNone     Who should attend?CPA - small firm, CPA - medium firm, CPA - large firm, Enrolled Agent, Other