James Theobald is a tax principal at Withum with over 30 years of experience providing tax planning and compliance services for high-net-worth individuals and privately held businesses of various sizes across diverse industries.
James specializes in developing sophisticated, customized tax strategies and delivering comprehensive compliance solutions that align with each client’s unique business goals. With strong technical expertise, he advises entities across all stages of the business lifecycle – from start-up and growth to maturity and exit planning.
James is a leader in the Los Angeles office, mentoring emerging professionals and training junior team members.
He is a licensed Certified Public Accountant in the State of California. His client-centric approach and contributions to the economic development of the Greater Los Angeles area earned him recognition from the Los Angeles Business Journal as one of the Top 100 Accountants in Los Angeles in 2025.
.
Learn more about my professional experience and how I spend my time outside the firm.
Education:
Professional Affiliations:
James is an active member of his community, serving his local church and supporting the Firm’s initiatives. He volunteers on the Tech team at Shepherd Church in Simi Valley and donates his time to a range of other church charitable projects. James has participated in Withum’s civic engagements throughout the years, from blood drives to serving lunch at the Boys and Girls Club of Conejo Valley.
Withum is proud to share that the Los Angeles Business Journal has recognized Kimberly Ravenell, Tax Partner, and James Theobald, Tax Principal, on its Top 100 Accountants list for 2025. Kim leads the tax practice in the Los Angeles office with over 30 years of experience providing tax planning and compliance services. Her pride in delivering…