Arthur's practice is focused on the areas of public finance and federal, state and local taxation. He has extensive experience as bond counsel with governmental bond issues, including general obligation, revenue and "subject to appropriation" financings for water and sewer projects, public schools and roads, commuter rail and other transportation facilities, and in tax-exempt financings for nonprofit organizations, including private elementary and secondary schools, and health care providers.

He also provides tax support for the firm's public finance group. He has applied his transactional and tax experience in assisting clients with developing innovative financing structures, particularly in the context of pooled bond issues and public-private transportation and utility ventures.