James B. Mann | Partner | Marijuana lawyer

James B. Mann


James B. Mann is a partner with the Tax practice group Greenspoon Marder LLP. Mr. Mann has over 25 years of experience serving as a trusted advisor to a broad range of stakeholders in the energy and financial services industries. He counsels clients on the new changes in the tax law, as well as cannabis tax issues. Mr. Mann advises financial institutions regarding international tax, structuring renewable energy asset-based bank loans and securitizations, cross-border tax-advantaged partnerships and securitizations, project finance, and renewable energy deals.

Court Admissions

  • U.S. Supreme Court
  • U.S. Second Circuit Court of Appeals
  • U.S. Fourth Circuit Court of Appeals
  • U.S. Fifth Circuit Court of Appeals
  • U.S. Ninth Circuit Court of Appeals
  • U.S. Tenth Circuit Court of Appeals
  • U.S. Tax Court

Bar Admissions

  • New York
  • District of Columbia


  • MBA, Finance and Accounting, Columbia Business School, 1992
  • J.D., Harvard Law School, 1982
  • A.B., Government, Cornell University, 1979
    • Phi Beta Kappa, National Merit Scholarship, Room and Board Scholarship

Professional and Community Involvement

  • National Renewable Energy Laboratory, Solar Access to Public Capital Committee, Member
  • New York City Bar Association, Project Finance Committee, Member

Speaking Engagements

  • Speaker, “The Cannabis Industry: Taxes, IRS Audits and Sec. 280E,” AICPA Webcast, January 27, 2020
  • Speaker, “Accounting For Cannabis And The IRS,” CLAB’s 4th Annual Cannabis Law and Business Conference, October 28, 2019
  • Speaker, “Preferred Equity Investments in Real Estate Ventures,” Strafford Webinar, August 15, 2019
  • Speaker, “Cannabis in the Zone,” 2019 Opportunity Zone Expo, May 9, 2019
  • Speaker, “Cannabis Industry Real Estate Investment Opportunities,” High NY Cannabis Investment: Real Estate, Opportunity Zones & NYC, May 1, 2019
  • Speaker, “Financing Opportunity Zone Projects: Exploring the Nuances Among the Hoopla,” CRE Finance Council, February 28, 2019
  • Speaker, “Navigating the Regulatory, Compliance & Tax Landscape,” Arcview Investor Forum, February 7, 2019
  • Co-Chair and Speaker, “Financing Renewable Energy: Prospects for 2016,” New York City Bar Association Continuing Legal Education,  January 27, 2016
  • Speaker, “Taxation of Alternative Energy,” JPMorgan Chase In-House Continuing Legal Education, January 30, 2015
  • Speaker, “In-Depth Tax Planning for Renewable Energy Projects,” EUCI San Diego,  June 9-10, 2014


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