Mr. Shipley's practice includes representing clients in state tax controversies before administrative boards and courts throughout the country, providing multistate tax advice regarding business operations, assisting clients in developing and implementing multistate tax planning and advising clients on the state tax aspects of corporate mergers and acquisitions. He provides advice to clients regarding state corporate income, franchise, sales and use, personal income and realty transfer taxes. He also provides advice to clients regarding unclaimed property and unemployment compensation issues.
Mr. Shipley is a frequent speaker on multistate tax topics for many organizations including the Georgetown Advanced State and Local Tax Institute, the New York University Institute on State and Local Taxation, the Institute of Professionals in Taxation, the Pharmaceutical Research and Manufacturers of America – State Tax Committee, the Broadband Tax Institute, local chapters of the Tax Executives Institute, the Wall Street Tax Association - State and Local Tax Committee, the Pennsylvania Bar Institute, and the New Jersey Society of Certified Public Accountants. Additionally, he has published state tax articles in State Tax Notes, the American Bar Association's The State and Local Tax Lawyer, and CCH's State Tax Review. David also is the general editor of the New Jersey and Pennsylvania sections of a forthcoming state tax research product from Lexis/Nexis.