Mark W. Yopp focuses his practice on state and local tax matters, including state tax controversy, multistate planning, and federal and multistate legislative monitoring and analysis. He focuses on corporate/franchise tax, sales tax, withholding taxes and unclaimed property. He also has extensive experience assisting clients with the state tax implications of new and emerging technologies, including digital goods and services, cloud computing and electronic commerce.

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  • Reduced a New York withholding tax assessment for a large pharmaceutical company from $7 million to $250,000
  • Assisted in the settlement of a New York State and New York City assessment of several hundred million dollars
  • Coordinated a voluntary disclosure process in more than 40 states for a large investment manager


The Legal 500 United States, 2017 and 2018 – listed among “Next Generation Lawyers’


Emory University, JD, 2007
Wake Forest University, BA, 2001

New York