Mark S. Ericsson


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Professional Experience

Mark S. Ericsson's practice emphasizes the areas of Tax Planning and Analysis, Tax Controversy, Tax Litigation, Tax Returns & Compliance, Tax Crimes, Tax Collection Defense, Business, Corporate Formation and Dissolution, Real Estate and Estate Planning. Mark has prepared hundreds of estate plans for families, some of which will transfer hundreds of millions of wealth .


Mark has represented owners and companies in nearly every industry, from transportation to medical instrumentation and high-end manufacturing, in matters ranging from acquisitions to tax planning to negotiations of disputes. Mark has negotiated hundreds of settlements with the IRS at the audit and collection stages. 


Mark's technical expertise is reflected in his accomplishments.


Mark has written over 35 published articles on complex tax issues, including editing a portion of the CEB treatise on IRC 1031 tax-deferred exchanges. He frequently lectures on taxation, business, and estate planning issues.


He is a past President of the Contra Costa County Bar Association, where he served as a member of the board of directors for nine years. As a former editor and current member of the editorial board, Mark was instrumental in developing the Contra Costa Lawyer into a recognized bar publication with a circulation of around 1,800. He chaired the Taxation Section of the Contra Costa County Bar Association in 1989 and 2011.


He is a founder and past chair of the Tax Litigation and Procedure Committee of the Taxation Section of the State Bar of California Bar and served as a member of the Taxation Section Executive Committee. He has served on several Internal Revenue Service committees and projects and has chaired the Tax Practitioners Liaison Group in Sacramento. He served as a member of the Board of Trustees of Children's Hospital and Research Foundation. He was named one of the Northern California Super Lawyers of 2006, 2008, 2011 and 2012 by Law and Politics magazine and the publishers of San Francisco magazine. Mark is currently chair of the JFK College of law dean's advisory board.


Mark received an engineering degree from Stanford University and his law degree from John F. Kennedy University. He has made law both a vocation and avocation for over three decades. His enthusiasm for the intellectual aspects of law is tempered by a very practical and cost conscious approach to problems. He is primarily a businessman and is solution oriented. Mark believes that the key to good lawyering is the ability to listen and to communicate. Practice remains fun for Mark in good part because of the relationships he builds with his clients.


  • Law School:
    Law School: J.D. John F. Kennedy

  • Undergraduate:
    Undergraduate: Stanford University

Bar Admissions

  • California
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