Firm Profile

Firm Profile
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Computers & Quickbooks

Our firm was established more than 40 years ago to provide efficient, expert accounting solutions to businesses and individuals. Our primary services include accounting, taxation, and business consulting. We also offer a host of specialty services to cater to the unique needs of our clients. We serve a wide range of individuals, corporations, partnerships, and non-profit organizations. We are experts in the accounting issues that impact our clients.


Our Goals
  • To provide our clients the best accounting service possible.
  • To make each client feel like the only client.
  • To  focus on tax planning to minimize the tax liability of our clients.

We offer the benefit of years of experience and ongoing studies. We are an equal opportunity employer and members in good standing of multiple professional organizations.
  • Established 1972
  • American Institute of Certified Public Accountants
  • California Society of Certified Public Accountants
  • Modesto Chamber of Commerce
A Brief History
In 1962, David Ristau graduated from San Jose State University with a degree in Accounting. He soon went to work as a Revenue Agent for the IRS. After four years, he was transferred from the San Francisco Bay Area to Modesto. David had requested the transfer because he realized that while owning a home in San Francisco was prohibitive, Modesto was affordable. His wage would remain the same. It was the right choice for the young family man.
David continued to work for the IRS in Modesto until he was offered a position, three years later, as a public accountant with Arthur Kalunian. David accepted the offer and worked for Mr. Kalunian until 1972, when he opened the doors to his own accounting practice.
It wasn't long before David outgrew his first office at 1400 K Street, and moved to 324 Burney Street. Judie Brimmer and Keith Cherry joined David on Burney Street and the practice continued to grow. In 1979, Ristau & Co. migrated to our current location at 101 College Avenue at the corner of College and Needham, in downtown Modesto. In 2007, Ryan Root joined the firm, becoming a partner in 2016.
After a lifetime of tax preparation, David met with clients for the last time in 2018. With a few tearful goodbyes to the clients and staff he'd grown to love like family, Dave said, "Keith, Judie and Ryan are the backbone of our firm. I was just smart enough to hire them and get out of their way."    


101 College Ave., Ste.1,   Modesto,   CA   95350
Phone: (209) 521-1376      Fax: (209) 521-0658