Our firm provides outstanding service to our clients because of our dedication to the three underlying principles of professionalism, responsiveness and quality.

Meet our founder.

Timothy J O'Brien

Founder, Senior Tax Specialist, CRTP

Timothy J O'Brien

Prior to creating his tax practice, Tim honorably served in our military. He served two tours in Vietnam in 1967 and 1968. After the military, he took positions with United Airlines and then Eastman Kodak.  Tim graduated from San Jose State University in 1971, receiving a bachelor degree in Business Administration with an emphasis in tax.

In 1972, shortly after graduating, Tim ambitiously founded Timothy J’ O’Brien Tax & Accounting and began his accredited career as a tax preparer. He had no office when he started, and rather drove door to door making house calls to all of his clients. By 1975, Tim had obtained his master’s degree in taxation from Golden Gate University and his practice continued to flourish.

In August of 1990, Tim acquired Dell Harris tax practice. The acquisition left Tim with nearly 1,000 clients and one of the largest, privately run tax practices in the bay area. In 2004, Tim sold his practice to his nephews, allowing Tim to have a more flexible schedule and continue to work in the industry he loves. He continues to serve as a Senior Tax Preparer and Advisor, with over 40 years of experience in tax practice management, preparation and law.


Get In Touch

At TJO & Associates, Inc., we've been serving the accounting needs of Campbell , CA and the surrounding areas for years. If you need help managing any aspect of your home or business's finances, we want to hear from you.

Please fill out this form and let us know how we can be of service. We will happily offer you a FREE initial consultation to determine how we can best serve you.

Thank you for visiting. We look forward to working together!

TJO & Associates, Inc.

274 E. Hamilton Ave. Ste G,
Campbell , CA 95008
T: (888) 378-0483
F: (888) 378-0483
E: info@tjotax.com


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