Photo of Mark Yopp

Mark W. Yopp

Baker & McKenzie LLP


Mark Yopp is a member of Baker McKenzie's Tax Practice Group located in the New York office.

Practice Focus

Mark regularly counsels clients on state and local tax matters, including state tax controversy, multistate planning and federal and multistate legislative monitoring and analysis. His practice focuses on corporate/franchise tax, sales tax, withholding taxes and unclaimed property.

Mark also has extensive experience providing counsel to clients with regard to the state tax implications of new and emerging technologies, including digital goods and services, cloud computing and electronic commerce.

Representative Legal Matters

Prior to joining the Firm, Mark:

  • Assisted several clients in monitoring, analyzing, and implementing sales and use tax collection requirements under both Wayfair implementation legislation and marketplace collection legislation.

  • Assisted in defending a client from a qui tam suit under the New York State False Claims Act, which ultimately resolved with a successful motion to dismiss.

  • Coordinated voluntary disclosure processes in more than 40 states for a large investment manager for multiple tax types.

Professional Associations and Memberships

  • Listed in "Next Generation Lawyer," The Legal 500 United States, 2017 - 2019


  • New York~United States


  • Emory University (JD, with honors) (2007)
  • Wake Forest University (BA) (2001)


  • English
  • Speaker, "State and Local Tax Update," 30th Annual Philadelphia Tax Conference, October 2019