About Cavin CPAs and Advisors


Originally the firm was started by James T. O’Brien, CPA. He provided quality accounting and tax Services in the St. Charles Area for over 24 years. In October 2019, Stacy L. Cavin, CPA acquired the firm, valuing the same high standards of quality.


About Stacy Cavin, CPA

Stacy Cavin, CPA graduated in 2009 with a Master’s in Business Administration with a concentration in accounting. Stacy is a Certified Public Accountant and a member of the American Institute of Certified Tax Planners. She has over 14 years’ experience in the industry and has worked with a large variety of industries, including, but not limited to:

  • Professional Services

  • Healthcare

  • Real Estate

  • Construction

  • Manufacturers & Distributors