Orange County, CA
Withum Plus Orange County
Located in the heart of Irvine’s business district, Withum is one of the nation’s top-rated and largest accounting firms in Orange County. Withum helps local corporations and nonprofits thrive, offering advisory, tax, audit, assurance and consulting services to the Orange County business community. We are more than just an Irvine accounting firm, we are a strong national resource providing all the traditional CPA and accounting services businesses and individuals require, plus a whole suite of advisory solutions to accelerate your success. That’s the Power in the Plus!
Find Our Orange County Office
100 Spectrum Center Drive
Suite 1000
Irvine, CA 92618
Phone: (949) 261-0808
Partner-in-Charge: Ken Johnson
Orange County Accounting and Advisory Service Specializations
Tax
Learn moreAccounting Advisory and Financial Reporting
Learn moreEmployee Benefit Plan Audits
Learn moreOutsourced Accounting Systems and Services (OASyS)
Learn MorePublic Company SEC Compliance & Reporting
Learn moreTransaction Advisory
Learn moreCalifornia State and Local Tax Updates
Do you or your organization operate in multiple states? Do you own property in a variety of states? California State and Local Tax (SALT) laws are always changing and understanding the nuances of the states that you own or operate in is challenging. In these California resources, you’ll find just a dash of the most up-to-date details on rules and regulations as state and local tax changes happen by state!
Industries We Focus on in Orange County
Withum in the Community
While our primary focus is serving the business needs of Orange County, we’re enthusiastically committed to giving back to the people and organizations that support local development. Whether it’s through our annual holiday drive, where we’ve collected thousands of essential items for local charities, or through active involvement on nonprofit boards, growth networks and hands-on volunteer work with organizations like Olive Crest and Second Harvest OC, our team is proud to step outside the office and into the heart of our community.
Beyond the Orange County Office
- Inside Public Accounting Top 100 Firms - 22nd Largest Nationally
- Accounting Today Top 100 Firms - 22nd Largest Nationally
- Great Place to Work® – Fortune Best Workplaces for Parents and Women
- Vault Top 25 Accounting Firm
Withum Orange County in the News
Emily Egkan Wins CalCPA Women to Watch: Experienced Leader Award
Withum is excited to announce that Emily Egkan, Senior Manager, has been selected as a 2024 Women to Watch award winner in the Experienced Leader category at CalCPA’s Elevate: Women’s […]
Michael Ritchie Named the M&A Advisors Emerging Leader
Withum is proud to share that Michael Ritchie, Senior Manager, was recognized by The M&A Advisor on their 15th Annual Emerging Leaders list. Michael is a Senior Manager on Withum’s […]
Orange County Business Journal Names Withum a Best Place to Work
Withum is proud to share that the Orange County Business Journal named Withum’s Orange County office a 2024 Best Place to Work in Orange County! Withum was recently recognized as […]
Partner In Charge
Ken brings nearly three decades of expertise in conducting audits and reviews for both privately held and publicly traded companies.
In addition to his successful career working with and advising the firm’s clients, Ken dedicates much of his time to non-client-focused activities, such as the daily operations and people strategy of the Orange County office and its growth in the local marketplace.
