We are pleased to announce that Dennis Perez, Michel R. Stein and Robert S. Horwitz will be speaking at the upcoming Spidell webinar on Federal and State Residency Matters: Navigating Examination Guidance State Regulations and Remote Workers on Tuesday, November 3, 2026, 10:00 a.m. – 12:00 p.m. (PST).
This webinar will guide tax professionals and advisers on the latest IRS residency examination guidance and California residency issues. California state tax residency rules, and an increase in residency audits and enforcement, require tax professionals to know state residency and income allocation issues, so they can properly advise their clients when these issues arise.
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Dennis Perez has extensive experience in the representation of clients in civil and criminal tax litigation and in tax disputes and controversies before the Internal Revenue Service and all the California taxing agencies. Mr. Perez was formerly a senior trial attorney with District Counsel, Internal Revenue Service, in Los Angeles, California. Mr. Perez is a Certified Tax Specialist, California State Bar Board of Certification and is also a Fellow of the American College of Tax Counsel. He frequently lectures on advanced civil and criminal tax topics at seminars and before national, state and local bar associations and accountancy groups.
He is a co-author of the BNA Portfolio, Tax Crimes, has served as the Chair of the Los Angeles Lawyer Magazine Editorial Board and is the first recipient of the Los Angeles Lawyer Sam Lipsman Service Award for outstanding service to the Los Angeles Lawyer Magazine. Mr. Perez was the 2025 recipient of the Joanne M. Garvey Award, given annually to recognize lifetime achievement and outstanding contributions to the field of tax law by a senior member of the California tax bar. He is past Chair of the Tax Procedure and Litigation Committees of the Taxation Sections of the State Bar of California and the Los Angeles County Bar Association. Mr. Perez is past President of the Alumni Board for the UCLA School of Law and has served as an Adjunct Professor, Golden Gate University, Graduate School of Taxation.
For more information, please contact Dennis Perez at perez@taxlitigator.com
Michel R. Stein, a principal of Hochman Salkin Toscher Perez P.C., is a nationally recognized tax attorney with nearly 30 years of experience in tax controversy and planning for individuals and business entities. He is widely respected for his ability to resolve complex and sensitive tax controversies before the Internal Revenue Service and the California Franchise Tax Board, including matters involving significant civil and criminal exposure, and is a trusted resource to clients and advisors navigating the most challenging areas of federal and state tax law. His commentary and insights have been featured in leading tax publications, webinars, and media outlets addressing emerging issues in tax enforcement and policy.
Mr. Stein has represented hundreds of clients in civil tax examinations, administrative appeals, and litigation before the U.S. Tax Court, U.S. District Courts, California Superior Court, and the U.S. Courts of Appeals. He routinely advises and defends clients in matters involving California Residency, Digital Assets and Cryptocurrency Investigations, High-Net-Worth Taxpayer Compliance and Examination, Domestic and International Tax Compliance, Voluntary Disclosures and Streamlined Filings, Challenges to Listed and Reportable Transactions, Partnership Tax and Audit Rules, Employment Tax and Worker Classification Issues, as well as tax controversies arising from Complex Real Estate and Business Transactions. He began his legal career as an Attorney Advisor to Special Trial Judge Larry Nameroff of the U.S. Tax Court and is a Certified Specialist in Taxation Law by the State Bar of California.
For more information, please contact Michel R. Stein at stein@taxlitigator.com.
Robert S. Horwitz is a Principal at Hochman Salkin Toscher Perez P.C., former Chair of the Taxation Section, California Lawyers’ Association, a Fellow of the American College of Tax Counsel, a former Assistant United States Attorney and a former Trial Attorney, United States Department of Justice Tax Division. He represents clients throughout the United States and elsewhere involving federal and state administrative civil tax disputes and tax litigation as well as defending clients in criminal tax investigations and prosecutions. In 2022 the Tax Section of the California Lawyers Association awarded him the Joanne M. Garvey Award for lifetime achievement in and contributions to the field of tax law.
For more information, please contact Robert Horwitz at horwitz@taxlitigator.com.
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