R. Gregory Roberts' practice focuses on the resolution of state and local tax controversies throughout the country. He has represented individuals and corporations in administrative and judicial forums throughout the United States. Gregg also has extensive experience in advising multistate and multinational corporations on the tax ramifications of complex business transactions and corporate restructurings. Gregg has extensive experience in matters involving corporate income and franchise taxes, personal income tax, employment taxes, sales and use taxes, and property taxes, with particular experience in handling Pennsylvania corporate income, utility, and property tax matters, and New York corporate sales and use and personal income tax matters.

Gregg advises clients across a wide variety of industries with a particular emphasis on the telecommunications, financial services, and healthcare sectors.

Although Gregg is usually able to obtain favorable results for clients without the need for litigation, when litigation is necessary, Gregg has extensive experience handling matters in courts and administrative tribunals throughout the country, including California, Colorado, Illinois, Indiana, Louisiana, Maine, Massachusetts, Michigan, New York, Oregon, Pennsylvania, South Carolina, Utah, Washington, as well as in federal district court.