Tax Services
Los Angeles, CA
Located in the heart of the San Fernando Valley, Withum is one of the nation’s largest accounting and advisory firms.
We offer advisory, tax and assurance services to a wide range of industries in the Los Angeles business community. Our professionals create strategies to minimize tax exposure, streamline business processes and guide companies through transactions.
(818) 789 1179
Los Angeles Service Specializations
Assurance and Accounting
Employee Benefit Plan Audits
Advisory
Audit Services
CA 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 Los Angeles
Our seasoned professionals possess the industry expertise our clients need to grow and succeed. We offer insights and experience to keep you informed and to help you achieve your financial goals.
Beyond the Region
- 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
Partner In Charge
Christopher Passmore, CPA, MBAChris Passmore is a partner with over 20 years of experience in public and private accounting and also serves as the partner-in-charge of the Firm’s Los Angeles office. He specializes in assurance and business consulting services to emerging and middle-market companies. While Chris services a wide variety of clients, he has developed a reputation as an expert in working with technology companies, professional service firms, franchised businesses, and benefit plans.
He spent several years working with publicly and privately held businesses while working at a Big Four firm. Chris understands the accounting firm and client sides of running a business, having served as a corporate controller for a publicly held manufacturing company. As part of the Master’s program, Chris attended the prestigious Global Enterprise Management Program at Oxford University in the United Kingdom. Chris is a member of a small group of CPAs who hold an advanced-level certificate for audits of 401(k) plans. This credential was established by the Employee Benefit Plans Audit Quality Center of the AICPA to distinguish those service providers committed to the employee benefit plan industry and adherence to DOL and IRS requirements.
Los Angeles Leadership
Withum in the News
ROI-NJ Names Withum Leaders to Annual Power List
Pat Walsh Pat Walsh, Managing Partner and CEO, has led numerous firmwide strategic initiatives focused on best practices, client experience and technology. He leads Withum’s national growth strategy and client service initiatives, with a focus on innovation, talent development and expanding the Firm’s advisory capabilities to meet clients’ evolving needs. Pat was recognized for his…
Withum Recognized with Cigna Healthy Workforce Designation™
As a people-first organization, the Firm offers a competitive Total Rewards benefits package with unique perks for Withum team members, recognizing wellness extends beyond baseline healthcare benefits. Withum is proud to be at the forefront of exceptional benefits that support team members’ health journeys. In addition to its traditional medical, dental and vision plans, the Firm offers supplemental benefits. These include an…
Rochester Business Journal Names Withum Leaders on Accounting and Insurance 2026 Power List
Rich Wright Rich Wright is the Partner-in-Charge of Withum’s Buffalo, Rochester and Batavia offices, offering more than 30 years of public accounting experience and deep expertise in tax planning. He advises closely held businesses, high-net-worth individuals and business owners on complex tax compliance and advisory matters across multiple industries. A strategic, people-focused leader, Rich plays…
Forbes Names Thirteen Withum Leaders to Its Best-In-State CPAs List
Withum’s representation reflects the Firm’s collective power of people, reinforcing its position as a leading national advisory, tax and audit firm. From the East to the West Coast and representing a broad cross-section of services and industries, the Withum advisors listed reflect diverse expertise and leadership styles, united by a shared commitment to client and community service. Withum’s 2026 Best-In-State CPAs New Jersey New…
LA Times Names Two Withum Leaders on its Banking and Finance Visionaries List
About Aza Ghazaryan Aza Ghazaryan is a Tax Partner with over 20 years of experience serving as a trusted advisor to partnerships and high-net-worth individuals on tax planning and compliance. She advises clients across industries, including professional services, real estate, technology and not-for-profit. Aza has successfully guided clients and teams through complex regulatory changes, including the Tax Cuts and Jobs Act, federal…
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