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About

Troy O'Callaghan, MBA, CPA

Firm Owner

Welcome to the website for my firm, Troy O'Callaghan, CPA.  I started this firm out of a passion to help entrepreneurs and small business owners.  I strive to give individuals and businesses more than tax advice and tax filing alone.  I also assist in analyzing past performance and planning for the future. 

I graduated with an accounting and finance degree from the University of Houston, and my MBA from the University of Texas.  I started my career in public accounting doing accounting and taxes for individuals and small businesses.  I helped many types of businesses -  farmers, chiropractors, attorneys, doctors, electricians and plumbers -  in a number of different legal entities - C Corporations, S Corporations, partnerships, LLCs, etc.  After several years I moved into corporate accounting.  I worked as a controller for the largest division of Baker Hughes, a Fortune 500 oil and gas company, overseeing the accounting, budgeting and internal controls for a segment with over $1 billion in revenue.  I also served as the Americas Controller for A. Schulman, Inc., a Fortune 500 plastics manufacturing company, overseeing five countries and dozens of manufacturing plants.  I led the year one implementation of SOX internal controls, participated in two implementations of SAP, and led the financial integration of four acquisitions with purchase prices ranging from $15 million to $800 million.

I expect great customer service from companies, and I deliver the same level of customer service to my clients.  My promise to all clients is to be honest and up-front, on time to appointments, and deliver work on or before the deadline.  I give every client the time and attention they need to accomplish their goals and fulfill the dreams they have for their own business.

Gordon Weiberg

Gordon Weiberg

Senior Tax Associate

Gordon joined the firm in January 2018.  He has a Bachelor of Science in Restaurant and Hotel Management from Purdue University, and has completed the accounting coursework to qualify for the CPA exam.  He has experience with individual, business, trust, and nonprofit returns.  He also has experience with QuickBooks Online and QuickBooks Desktop products.

Nicole Guidry

Nicole Guidry

Senior Tax Associate

Nicole joined the firm in November 2018.  She has an Accounting Associates degree from Lone Star College.  She has experience with individual, business, trust, and nonprofit returns.  She also has experience with QuickBooks Online and QuickBooks Desktop products.

Lauren Biehl

Lauren Biehl

Tax Associate

Lauren joined the firm in December 2019.  She is currently enrolled at Lone Star College and anticipates completing her Accounting Associates in 2021.  She has experience with individual, business, and nonprofit returns.  She also has experience with QuickBooks Online and QuickBooks Desktop products.

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