Director of Technology Services


Ryan has over 10 years of tax technology automation experience working with start-up companies as well as large enterprises. His expertise in end-to-end sales, and passion for use tax automation, makes him a wonderful asset to your business. He has extensive experience with e-commerce, point of sale, retail, and both the software and clothing industries. […]

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Managing Director - IT




Jim began his career in sales and use tax at the California State Board of Equalization in the San Francisco District.  His audit experience included construction contractors, leasing companies, hospitals, manufacturing companies, broadcasters, and motion picture producers.  While in the district, he revised the Board’s in-house construction contractor law and audit courses and served as […]

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Direct: (630) 327-3345

Jeff specializes in multistate sales and use tax compliance and reverse audits. His experience includes sales and use tax research and review, including preparation of taxability matrices for diverse projects. Jeff has worked extensively on tax analysis for reverse audit refund claims in a number of states. Through his experience, Jeff has been able to […]

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Direct: (630) 327-2228

Pat’s experience includes audit supervisor for the Illinois Department of Revenue, managing his own state and local tax consulting practice, and manager in the Tax Department at Kraft Foods.  He brings a unique perspective understanding both government and private sector approaches to sales and use tax compliance and audit issues. Follow

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Vice President, Chief Information Officer

Direct: (630) 923-5014

Adam specializes in sales and use tax compliance and reverse audits in multistate jurisdictions. His experience includes research and review of compliance and audits, and includes the preparation of taxability matrices for multiple projects.Adam works on tax analysis for reverse audit refund claims in a multitude of states. Through his previous customer service management experience, […]

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Direct (415) 320-7829

Dan offers more than thirty years of experience between public accounting and the California Board of Equalization. He has served as a Partner and Principal, focusing on both state and local tax issues at two Big 4 accounting firms. Dan founded Thompson Tax in June 2002. His consulting clients include both national and international companies […]

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