About Jefferson

Jefferson Chen is a tax director in the Costa Mesa office of Marcum LLP. With an extensive background in the field of taxation and Big 4 tax experience, Mr. Chen’s focus lies in navigating complex tax strategies that maximize tax savings and wealth preservation while mitigating potential risks. He specializes in tax compliance, consulting, and controversy for high-net-worth individuals, private equity funds, hedge funds, real estate funds, fund managers, cannabis companies, and small businesses.

Mr. Chen has a proven track record in effectively assisting clients with IRS Exams, Appeals, and Collections negotiations. He has assisted clients obtain Currently Not Collectible “CNC” status and successfully negotiated with IRS appeals to remove unfavorable adjustments, penalties, and interest.

His proficiency extends to alternative investments tax compliance, including work with hedge funds and private equity funds. He has considerable experience with aggregate allocations, carried interest, and waterfall calculations, providing clients and fund managers with comprehensive insights into their investment portfolios. Due to his experience with small businesses, Mr. Chen is able to assist with tax compliance and consulting for both private equity funds and their portfolio company investments. His proficiency also encompasses international tax compliance, focusing on foreign withholding and reporting for hedge funds and private equity funds.

Mr. Chen also advises clients on real estate transactions, including 1031 exchanges, tenant in common transactions, and Delaware Statutory Trusts. His strategic approach to these tax deferral strategies ensures clients can leverage tax advantages under the current tax law.

In the rapidly evolving sector of cannabis, Mr. Chen offers specialized 280E cannabis consulting, delivering innovative solutions that meet regulatory compliance while optimizing business growth. Mr. Chen has represented clients in BBA CPAR Partnership Audit Exams in the cannabis industry, negotiating COGs and SG&A expense allocations.

With a strong accounting and tax background, Mr. Chen has assisted small businesses navigate sell-side tax due diligence. He’s negotiated on behalf of his clients with buyers regarding issues such as net working capital adjustments, performance based earn-outs, and tax gross up calculations. He has a comprehensive approach to sell-side due diligence that helps simplify the due diligence process for his clients.

Overall, his in-depth knowledge and vast experience in these specialized areas of taxation position him as a trusted advisor, providing clients with the assurance and guidance they need to navigate the ever-changing tax landscape.

Professional & Civic Affiliations

  • American Institute of Certified Public Accountants (AICPA)
  • California Society of Certified Public Accountants (CalCPA)
  • Financial Executives Orange County (FEI OC Chapter)
Industry Focus

Real Estate
Alternative Investments
High-Net-Worth Individuals
Small Business Taxpayers


Bachelor of Arts
University of California Irvine: Economics; Accounting Minor

 Masters of Professional Accountancy
University of California Irvine