Our team of experienced analysts ranked the top accounting firms in Orange County that can assist you in improving your overall finance operations. To select the best partner for your company's needs, sort the agencies based on their hourly rate, team size, verified ratings, and more.

Best Orange County Accounting Company Rankings

7 Companies - Rankings updated: July 02, 2026

Each agency listed on DesignRush is assessed for industry expertise and customer testimonials are evaluated in order to provide you with a vetted selection. Certain listings represent paid partnerships.

United States × California × Orange County ×
  • IT, Business, BPO, Audit, Tax and Advisory are just the beginning.

    IT, Business, BPO, Audit, Tax and Advisory are just the beginning.

    Grant Thornton LLP (US) is an IT, project management, audit, tax, AgTech, and BPO company headquartered in Chicago, Illinois with over 50 U.S. offices and access to a global network or member firms in over 135 countries. We offer a broad range of services in strategy and consulting, operations, technology and  [... view Grant Thornton profile ]

    Top Services:

    • Accounting
    • Business Consulting
    • HR Outsourcing
    Location
    Orange County, California
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $35/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    2 Projects Listed
  • Collaborating for Lasting Impact in Business Consulting

    Collaborating for Lasting Impact in Business Consulting

    Join us at Deloitte, where we believe that our collective influence is the cornerstone of our value. With a rich legacy spanning over 175 years and a global network encompassing 150 countries, we empower remarkable achievements, solve complex problems, and drive meaningful progress for clients, professionals  [... view Deloitte profile ]

    Top Services:

    • Accounting
    • Business Consulting
    • HR Outsourcing
    Location
    Orange County, California
    Number of Employees
    1000 & Up
    Portfolios Count
    6 Projects Listed
  • Your Partner in Small Business Success Since 1966

    Your Partner in Small Business Success Since 1966

    PADGETT has been catering to the unique needs of small business owners across North America since 1966. With a comprehensive suite of services, including small business consulting advice, professional tax preparation, payroll solutions, bookkeeping, and more, we provide the support and expertise necessary for  [... view PADGETT profile ]

    Top Services:

    • Accounting
    • Business Consulting
    • Payroll
    Location
    Orange County, California
    Number of Employees
    250 - 499
  • Now, for tomorrow.

    Now, for tomorrow.

    Offering AgTech, Business, and IT Services. Baker Tilly Canada Cooperative is a member of the global network of Baker Tilly International Limited, the members of which are separate and independent legal entities. Baker Tilly Canada refers to the association of member firms of Baker Tilly Canada Cooperative  [... view Baker Tilly profile ]

    Top Services:

    • Accounting
    • Business Consulting
    • HR Outsourcing
    Location
    Orange County, California
    Number of Employees
    1000 & Up
  • Building A Better Working World

    Building A Better Working World

    EY offers Accounting, Business Consulting, and IT Services with a mission to build a better working world. It provides insights and quality services that instill trust in global capital markets and economies. EY focuses on developing exceptional leaders who deliver on their commitments to all stakeholders  [... view EY profile ]

    Top Services:

    • Accounting
    • Business Consulting
    • HR Outsourcing
    Location
    Orange County, California
    Number of Employees
    1000 & Up
  • Together, we achieve more.

    Together, we achieve more.

    Offering project management, business, and IT services. At KPMG LLP, their purpose is to turn knowledge into value for the benefit of their clients, people, and the capital markets.  [... view KPMG profile ]

    Top Services:

    • Accounting
    • Business Consulting
    • HR Outsourcing
    Location
    Orange County, California
    Number of Employees
    1000 & Up
  • Building trust in society and solving important problems.

    Building trust in society and solving important problems.

    We’re a network of firms in 155 countries with over 284,000 people who are committed to delivering quality in BPO, project management, assurance, advisory, IT, and tax services.  [... view PwC profile ]

    Top Services:

    • Accounting
    • Business Consulting
    • HR Outsourcing
    Location
    Orange County, California
    Number of Employees
    1000 & Up

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About The Author and Expert Reviewer

Natasa Glikman is an experienced editor and content writer with over 10 years of experience in writing, editing, and translating articles across various topics, with a strong focus on marketing and advertising. At DesignRush, Natasa currently works as an editor, where she refines and enhances B2B content to ensure accuracy, clarity, and consistency across agency profiles and industry reports.

Dušan Milutinović is a finance expert with an MBA from Purdue University in the U.S. He has gained over 15 years of experience from his roles as the CFO of Serbia Broadband, Board Member of Hemofarm AD, General Manager of STADA, and Consultant at IFC (Member of The World Bank), as well as KPMG (BearingPoint). He is currently the Senior Finance Manager at DesignRush, overseeing the company's finance, administration, and reporting processes.