Matthew A. Portnoff

Matthew Portnoff
Matthew Portnoff focuses on federal, state, and local tax matters as well as a broad range of business transactions, including mergers and acquisitions, partnerships, real estate taxation, tax credits and tax-exempt financing, nonprofit taxation, and general business planning. He has significant experience in the formation of various business entities and related tax planning. In addition to his transactional practice, Matthew regularly handles tax controversy issues in judicial and administrative forums at the federal, state, and local levels, with a particular emphasis in entertainment-related matters. In addition, he has significant experience representing clients investing and operating in the commercial cannabis industry in accordance with applicable state laws.




  • LL.M. Taxation New York University School of Law 2004
  • J.D. University of Southern California 2000
  • M.B.T. University of Southern California, Marshall School of Business 2000
  • B.S. magna cum laude University of California at Berkeley 1997

Bar Admissions

  • California
  • District of Columbia

Court Admissions

  • California State Court
  • U.S. Tax Court

Professional Memberships and Activities

  • Adjunct Professor, Graduate Tax Program, Loyola Law School


  • Southern California Super Lawyers, Rising Stars 2012-2015