Helping the world become more financially savvy-one relationship at a time.



Located in Modesto, California, Atherton & Associates, LLP was founded more than 50 years ago. The firm has seven partners and provides services to over 3,500 clients and employs approximately 40 individuals. As one of the largest CPA & consulting firms in the San Joaquin Valley, Atherton & Associates, LLP also has the ability and resources to tackle the most complex business situations. We enhanced those abilities in 2003 by joining the RSM US Alliance.


Our Motto

Work here, live here, play here.  Invested in our community.


Core Values

Conducting ourselves and our business honestly and ethically

Building success through dedication to our clients, colleagues, community and families

Proactively seeking new ideas, alternatives and solutions in an ever-changing world

Utilizing our collective expertise to achieve common goals in an environment of respect and open communication

Upholding our tradition of providing best in class services through the continuous development of our quality people


RSM US Alliance

We enhanced our abilities in 2003 by joining the RSM US Alliance. This association gives us access to more than 9,000 people in 86 offices nationwide while maintaining our local ownership and identity. We are able to provide each client with the expertise and resources of a national firm, while maintaining the close client relationships that have defined our long-term success.