William Gagnon

As Founder and President of GAGNONtax, Bill brings a unique perspective to the industry with a focus on delivering the benefits of big firm-quality services to GAGNON’s clients with the dedication and service that one would expect from a smaller firm....

Paul Naehle

Paul Naehle serves a full range of clients from start-ups to the Fortune 500. His areas of expertise span across tax technical consulting, multistate tax recovery, state and federal research credit studies, audit support, controversy representation, and expansion-based credits and incentives....

Mike Hayes

Mike Hayes is the Partner in charge of EnterpriseGt, part of GAGNONtax’s Tax Technology Solutions. His client base includes clients across industries including manufacturing, distribution, construction, retail, hospitality and technology. At these clients his focus is on automating transactional sales and use tax functions through third party vendors such as Thomson Reuters and Vertex or custom in-house builds....

Carl Roscoe

Since 1997, Carl Roscoe has worked on a wide spectrum of state and federal corporate tax issues and projects. He has significant experience in income/franchise/gross receipts, sales/use, property and payroll tax matters. Currently, he focuses primarily on merger and acquisition due diligence, mitigation/remediation of historical tax exposure, and on emerging company tax concerns. Carl joined GAGNONtax in 2001, where he also serves as general counsel....