Our Team

TAG’s team of experienced leaders is dedicated to personalized, effective, prompt and superior service – and this aspiration is carried throughout the company to each and every employee.

Our industry expertise is unmatched, as are the results we provide our clients.

Leadership Team

Lynn Krebs PhD CMI


An industry leader for over 20 years, Lynn oversees overall business strategy, client relationships and business expansion. Prior to joining Tax Advisors Group, Lynn was Key Accounts Executive, Property Tax, with Altus Group US and Director of Technical Training at Ryan, LLC, and prior to that, Director of Education and Certification Programs at the Institute of Professionals in Taxation (IPT). He received his undergraduate degree and Masters in Land Economics and Real Estate from Texas A&M University and earned his Doctor of Philosophy degree in Higher Education from Georgia State University. Lynn is involved in several professional associations and is a frequent speaker at regional and national state and local tax conferences. IPT is especially important to Lynn; he serves as Chair of the Advanced Property Tax Education committee, Chair of the DFW Local Luncheon committee and member of the CMI Property Tax professional designation committee. He was the 2015 President of the Aggie Real Estate Network (AREN) and served on the Board from 2011 through 2016. He is a Certified Member of IPT (CMI) and a licensed Texas Senior Property Tax Consultant.


Troy Fields


A proven leader, Troy is responsible for the Financial, Sales, Information Technology and Facilities functions. Having been a leader of a consulting firm (Viscern) that was twice selected as one of the Top 100 fastest growing companies in Dallas, Troy brings years of experience with managing a fast-growing consulting practice. In addition to his years working as the CFO and COO for several Dallas-area hedge funds, Troy also formed and led Surge Advisors, a contingency fee-based consulting practice that focused on cost reduction for their clients. Troy received his bachelor’s degree in Accounting and Management Information Systems from Southern Methodist University.


Lisa Zachary

Senior Vice President of Tax Consulting

With over 18 years experience in the real estate and business personal property industry, Lisa manages the tax consulting team to ensure effective results, timely filling deadlines and rapid response to client requests. Prior to joining Tax Advisors Group she managed a team of consultants at Duff & Phelps, and was a Tax Consultant with Rash & Associates and Verizon Communications. Lisa has multi-state tax consulting experience in a wide range of industries. Lisa has attended University of Phoenix and University of North Texas with an emphasis on Business Management. She is a certified Texas Senior Property Tax Consultant.

Sales Team

Caitlyn Machann

Vice President

With over five years of experience, Caitlyn brings a unique ability to connect with people and exhibits a strong work ethic, which helped to promote her from Sales Associate to Vice President in just two years. Caitlyn plays an integral role in our sales process by cultivating business partnerships through presentations and meetings with prospective clients. Prior to joining Tax Advisors Group, Caitlyn was an account manager in the medical industry. She graduated from Texas A&M University with a Bachelor of Science Degree. She is an active member of The Association of Former Students and serves as a Co-Chair of the Dallas A&M Club.


Jonathan Dabbert

Vice President

Jonathan has over 15 years of business development experience and has been an integral part of Tax Advisors Group’s growth over the past several years. He excels at building new client relationships and exemplifies the quality of service that clients can expect. Prior to joining Tax Advisors Group, Jonathan was a Sales Manager for the DFW area of a national private club and was an Acquisitions Associate for a real estate company. He graduated from Southern Methodist University with a Bachelor of Arts in Economics where he earned an academic scholarship and studied overseas in Italy.


Stephen Sharpe

Vice President

A proven leader in sales and business development, Stephen has over 25 years of sales and leadership experience in multiple industries. Closing deals with fortune 100 companies is his specialty. Prior to joining TAG, Stephen worked for a property tax consulting firm for several years, during which time he received his Texas Property Tax License, exceeded regional and individual sales quotas, and maintained the highest rate of client retention at his firm. He was also the President of a Development and Construction company specializing in infrastructure development and new home sales. He is a graduate of Dallas Baptist University and a two-time All-American college athlete.