David Hillegass

David Hillegass

Managing Director

State & Local Tax

David is a Managing Director within GTM’s State and Local Indirect Tax Practice, based out of the firm’s Philadelphia Metro Office. He specializes in sales and use taxes from both a technical and a technological perspective.

Since joining GTM, David’s primary responsibilities have included supporting clients’ indirect tax compliance functions, assisting with technical consultations on matters of indirect tax law, supplementing clients’ daily indirect tax logistics, and providing support services for clients’ indirect tax technology. David leads the sales and use tax technology consulting function at GTM, providing remediation, enhancement, and implementation services for clients’ sales and use tax technologies.

Prior to joining GTM, David spent 8 years with PricewaterhouseCoopers LLP. He serviced clients in aspects covering multiple areas of taxation, including state and local sales and use taxes, state and local income taxes, payroll taxes, and trust taxes. He also assisted in the implementation and issue remediation of clients’ indirect tax technologies, in addition to providing indirect tax consulting.

Outside of GTM, David is adjunct professor in the Villanova University Masters Program, where he leads the Intro to Sales and Use Tax course. He resides in Malvern, PA with his family. He enjoys playing golf, finding new places to eat, and spending time with loved ones.




B.S. in Business Administration with a concentration in Accounting from University of Notre Dame
M.S. in Taxation from Villanova University