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About Us


Our History

MainStreet Tax & Accounting Services began in the unfinished basement of founder Lawrence B. Larsen’s home in Vernal, UT in 1960. With its inception, Lawrence B. Larsen Co. became only the second public accounting firm in Vernal, and the first to have an accountant with an accounting degree. 

In 2005, David and Keith Larsen, sons of founder Lawrence B. Larsen, joined forces with their father following their own successes in the areas of entrepreneurship and finance. Since 2005, the firm has experienced over 500% growth thanks to the support and referrals from current clients and extended offices to Orem and Vernal. While primarily serving the intermountain region of the United States, MainStreet now has client relationships spreading from the Pacific coast in California to the Atlantic coast in Florida. 

Beginning January 2019, longtime employees, Glen Zaugg and Jared Thornock, purchased the company with Glen now as the CEO and Managing Partner and Jared as Partner and V.P. of Client Services.  Glen brings 30+ years of business management experience and Jared has 10 years of professional business & personal tax preparation experience. Along with other qualified staff, David and Keith Larsen continue to be our resident tax experts and remain with the company.

Beginning late 2019 MainStreet expanded its business once again with the creation of the new Division, MainStreet Financial Services, which now offers Retirement Planning, Financial Advisory and Insurance Services through Avantax Wealth ManagementSM.

MainStreet Financial Services is not affiliated with Avantax Wealth Management. The advisors at MainStreet Financial Services are affiliated with Avantax Investment Servicesâ„ 


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