Ralph A. Mariani

Of Counsel

  • Ralph A. Mariani
  • Phone: +1 215 979 1967
    Fax: +1 215 689 3597

    Import to Address Book

  • Duane Morris LLP
    30 South 17th Street
    Philadelphia, PA 19103-4196
Ralph A. Mariani practices in the areas of state, local and federal income taxation.

Admitted to practice in Pennsylvania and Connecticut, he is a member of the Taxation Section of the American Bar Association, the Tax Law Section of the Pennsylvania Bar Association and is a past chair of the State and Local Tax Committee of the Tax Section of the Philadelphia Bar Association.

Mr. Mariani is a 1974 graduate of the University of Pennsylvania Law School, a 1974 graduate of The Wharton School of the University of Pennsylvania, where he earned a Masters in Business Administration, a 1980 graduate of New York University School of Law (LL.M., Taxation) and a graduate of Harvard University.

Representative Matters

  • Advising real estate clients on structuring strategies to minimize real estate transfer taxes.
  • Formulated state tax minimization strategies that have resulted in a substantial reduction of state income and franchise taxes.
  • Represented a major telecommunications corporation in a gross receipts tax litigation.


  • Connecticut
  • Pennsylvania
  • U.S. Court of Military Appeals
  • U.S. District Court for the Eastern District of Pennsylvania
  • Supreme Court of Pennsylvania
  • Supreme Court of Connecticut


  • University of Pennsylvania Carey Law School, J.D., 1974


  • Duane Morris LLP
    - Partner, 1985-present
    - Associate, 1977-1985
  • United States Navy
    - Judge Advocate General Corps., 1974-1977

Professional Activities

  • American Bar Association
    - Taxation Section
  • Pennsylvania Bar Association
    - Tax Law Section
  • Philadelphia Bar Association
    - Tax Section
    -- Past Chairman, State and Local Tax Committee

Honors and Awards

Civic and Charitable Activities

  • Appointed by Philadelphia Mayor Edward Rendell and City Council President John Street to a select committee to review all city and school district business taxes for the purpose of streamlining the tax structure in order to enhance the business environment in Philadelphia, 1992-1996
  • Member, Mayor's Advisory Group for City Taxes, 1991-present

Selected Speaking Engagements

  • Lecturer, "Pennsylvania Sales and Use Tax," Lehigh University 40th Annual Tax Forum, October, 1999
  • Lecturer, "Representing Nonprofit Organizations," Pennsylvania Bar Institute, July 1999
  • Lecturer, "Provider Perspectives on the Philadelphia PILOTS/SILOTS Program," Metropolitan Philadelphia Chapter of the Healthcare Financial Management Association, December 1994
  • Lecturer, "Organization and Operation of a Delaware Holding Company," Philadelphia Tax Conference, October 1992
  • Program Chair, "The Nexus Question: Current Issues in State Taxation of Businesses," Philadelphia Bar Association, May 1992
  • Lecturer, Pennsylvania Sales and Use Tax, National Business Institute, July 1991
  • Lecturer, "State Income Taxation of S Corporations and Partnerships," Philadelphia Bar Association, February 1991
  • Lecturer, "Philadelphia Local Taxes," Pennsylvania Bar Institute, May 1991
  • Lecturer, "Income Taxation of Pennsylvania Corporations," National Business Institute, January 1990
  • Lecturer, "Understanding Business Taxes," Mayor's Small Business Conference, October 1989 and 1990
  • Lecturer, "Local Tax Reform," Pennsylvania Bar Institute, May 1989
  • Lecturer, "Local Business Taxes and Related Activities," Pennsylvania Bar Institute and Philadelphia Bar Association, 1986