714.505.9000 cpas@hmwccpa.com

About Our Firm

Serving businesses has been our focus for more than 50 years.

Since 1968, HMWC CPAs & Business Advisors has been based in Orange County, California, and has specialized in serving the financial and tax needs of privately-held businesses and their owners throughout Southern California. The depth and breadth of our audit, tax, and business advisory experience make us a valuable companion to our clients’ management team.

The firm has a partner and manager group who bring experience and expertise to every client engagement, ensuring that each one receives the customized services needed to help their business grow and thrive.

Firm History

After getting its start in New York and Los Angeles, HMWC settled in Orange County and has grown to be a premier CPA firm in Southern California. Read the firm’s story here.

Integra International ®

As members of Integra International®, a world-wide alliance of CPA firms, we have access to national and international resources to consult on a variety of multi-state and global tax and business issues.

Gerry Herter, partner emeritus, served as president and is still active in the association by contributing articles and other writings.

Steve Williams, the firm’s managing partner, is a director on the association’s Global Board of directors.

Unique Tradition

A unique differentiator that takes place outside the office? Here’s an interesting account of the “Death March” that appeared in Accounting Today. 

“For over 50 years, HMWC CPAs & Business Advisors has been serving the needs of myself and my companies with outstanding results.”

George Argyros

Chairman, Arnel & Affiiates

Affiliates & Memberships



17501 East 17th Street, Suite 100

Tustin, CA 92780











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