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: April 03, 2026
DesignRush vets all agencies based on professional qualifications and verified customer feedback to help you choose confidently. Some featured agencies maintain paid sponsorships.
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 ]- 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
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsGrant Thornton Services
Comprehensive analysis done by DesignRush Agency Experts.Clients and Projects
View Full Portfolio-thumb-webp.webp)
Financial Accounting Project Finance modernization for data-driven expansion -thumb-webp.webp)
Business Operations Consulting Project A new procurement paradigm at BDTX
Reviews verified by DesignRush and sourced from the agency's profileGrant Thornton Reviews & Testimonials
Theodore Mall's Review Sourced from Google
One of the world’s leading organizations of independent audit, tax and advisory firms. Grant Thornton has revenues in excess of $1.9 billion and operates more than 50 offices.
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Data sourced from the agency's DesignRush profileFinancial industry Real estate industry Media and Entertainment industry
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 ]- Location
- Orange County, California
- Number of Employees
- 1000 & Up
- Portfolios Count
- 6 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsDeloitte Services
Comprehensive analysis done by DesignRush Agency Experts.Clients and Projects
View Full Portfolio-thumb-webp.webp)
Business Consulting Project How Deloitte helped a large fast food company become a leader in sustainability. -thumb-webp.webp)
Business Operations Consulting Project Not zero Modelled Reimagined Simplified Net zero -thumb-webp.webp)
Strategy Consulting Project Lagging Shifted Coached Moved Leading -thumb-webp.webp)
Business Consulting Project From Monitor to Protect
Reviews verified by DesignRush and sourced from the agency's profileDeloitte Reviews & Testimonials
InlineAdam's Review Sourced from Google
So sphiscated accounting systems I must say. For what? Never saw an irs payable in any return they asked me to prepare although I’m no licensed accountant. No names no whistle just a honest google review. Makes me wonder what an accountant does, cooking books or AICPA reporting them. No mark up in my basis. The roc building is beyond comprehension though, they even do SNL up or down stairs never got to see a show so I don’t know
Show moreModernfoldStyles, Inc.'s Review Sourced from Google
We are proud to have been able to offer a beautiful Modernfold panel recovery job to give the walls a facelift to complete newly renovated meeting rooms at Deloitte in Rockefeller Plaza. Deloitte has always been such a great and dear client of ours! We look forward to continuing to work together in the future!
Show moreAlex Stackhouse's Review Sourced from Google
Deloitte completely failed implementation of Army IgnitEd, which led to thousands of service members paying out of pocket for education expenses. The circus that we watched unfold leaves me with zero confidence in the services that this firm provides.
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Data sourced from the agency's DesignRush profileFinancial industry Government Sector IT industry Manufacturing industry Telecommunications industry
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 ]- Location
- Orange County, California
- Number of Employees
- 250 - 499
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsPADGETT Services
Data sourced from the agency's DesignRush profileFinancial Industry Small Business Industry Real Estate Industry
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 ]- Location
- Orange County, California
- Number of Employees
- 1000 & Up
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsBaker Tilly Services
Reviews verified by DesignRush and sourced from the agency's profileBaker Tilly Reviews & Testimonials
Jay P's Review Sourced from Google
Excellent firm. Knowledgable and will help their clients in ways other firms can not even begin to. Great for professionals/business owners.
Show moreSewell Grain Farms's Review Sourced from Google
Catalyst played a key role in the smooth transition of our 4th generation family farm and continue to be a great support for our ongoing financial reporting needs.
Show moreJames Kernahan's Review Sourced from Google
Great firm, found me tax savings I didn't know existed and are very easy to work with. Highly recommend them.
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Data sourced from the agency's DesignRush profileAutomotive Industry Real Estate Industry Legal Industry
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 ]- Location
- Orange County, California
- Number of Employees
- 1000 & Up
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsEY Services
Data sourced from the agency's DesignRush profileQiagen Apple ASOS Microsoft Wawa
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 ]- Location
- Orange County, California
- Number of Employees
- 1000 & Up
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsKPMG Services
Reviews verified by DesignRush and sourced from the agency's profileKPMG Reviews & Testimonials
P. J.'s Review Sourced from Google
If you would like to see human beings organized as if they are an ant farm, this is the place.
Show moreKevin Meyer's Review Sourced from Google
Awesome old building on Park, also home to the NFL... Keep your eyes open in the lobby, and you'll undoubtedly run into a player.
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Data sourced from the agency's DesignRush profileFinancial Industry IT Industry Real estate Industry
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 ]- Location
- Orange County, California
- Number of Employees
- 1000 & Up
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsPwC Services
Reviews verified by DesignRush and sourced from the agency's profilePwC Reviews & Testimonials
Will Moss's Review Sourced from Google
How do you recognise an extrovert auditor? He looks at YOUR shoes whilst talking to you
Show moreStephen Carpenter's Review Sourced from Google
Very impressive entrance in Villiers Street. I walked in there and thought I it might have been a shopping centre, I was told it was not. I walked away .
Show morePaula Cumpik's Review Sourced from Google
Hard to figure out what's where and unfortunately I been to drop a Cv there . They say they don’t know where to send , and better to go in the web side and apply. This is very strange…..
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Data sourced from the agency's DesignRush profileFinancial industry Construction industry IT industry
Related Services in Orange County
Accounting Firms Near Orange County
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.
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