Our Senior Team
Trisha is an active member of:
AICPA - American Institute of Certified Public Accountants
PASBA – Professional Association of Small Business Accountants
CASBA – Colorado chapter of PASBA
ASTPS - American Society of Tax Problem Solvers, providing tax resolution services and IRS representation for clients facing audits or collection issues
Trisha S. Allen, CPA, CTRS, MAcc
Founder | CEO
Trisha brings over 15 years of experience in accounting, tax, and business advisory services. She specializes in tax planning, tax preparation, financial reporting, and IRS & State representation for both individuals and business entities.
With a strong focus on service-based industries — especially dentists and dental practices — Trisha has developed deep expertise working with C Corporations, S Corporations, partnerships, sole proprietors, and high-income individuals.
Her academic background includes a Master’s in Accounting & Financial Analysis and a Bachelor’s in Computer Science, giving her a unique analytical edge in complex financial environments.
She is committed to helping business owners make informed decisions, reduce their tax burden, and gain year-round clarity over their financials.
Michael worked as a Team Lead in IT Architecture and Software Engineering for over two decades. His expertise helps to ensure that our firm can provide our clients with the most efficient and secure technology available. He joined T. S. Allen & Associates in 2021 as an EA candidate and Tax Associate to pursue his interests in tax planning.
After graduating from Brigham Young University in 2004, Kailey worked with non-profits focused on environmental education. In 2016 she received her initial QuickBooks Certification through the Accounting and Business School of the Rockies. She joined T. S. Allen & Associates in June 2021 as the primary Bookkeeper.
She and her husband currently live in Austin, Tx.