Top 100 Tax Preparation Firms in Orange County
The Best of December 2025Looking for a top tax preparation company in Orange County?
Reduce your risk of being audited and navigate the tax preparation process with ease by working with a tax preparation service.
To assist you in your search for a partner, we’ve compiled this list of the top tax preparation experts in Orange County. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best Orange County Tax Preparation Services
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1Undisclosed1,000 - 9,999 employeesSanta Ana, CAFinance & Accounting Outsourcing (FAO) company Meru Accounting was founded in 2015. Headquartered in Santa Ana, California; Ahmedabad, India; Chicago, Illinois and Boca Raton, Florida, their large team provides Finance & Accounting Outsourcing (FAO), Accounting, ERP consulting and SI, and Tax Law.Read More
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2Undisclosed10 - 49 employeesTustin, CARead More
SmartBean is an accounting firm based in Tustin, Calif. The firm, founded in 2018, has a team of less than ten that provides bookkeeping, tax preparation, and financial accounting services to various clients.
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Willenworks Technology SolutionsIndustries
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3$1,000+2 - 9 employeesIrvine, CARead More
Bharmal & Associates, Inc. is an accounting firm that's based in Irvine, Calif. Since 1993, their team of 10+ specializes in tax preparation, financial accounting, and business consulting for clients in the construction, retail, financial services industries, and more.
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4Undisclosed2 - 9 employeesIrvine, CARead More
Tehrani & Velez, LLP is an accounting firm founded in 1989 in Irvine, Calif. Their team of no more than 10 offers tax preparation, financial accounting, and business consulting solutions to small and mid-market firms in the fields of manufacturing, real estate, and healthcare.
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SparkhouseIndustries
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5Undisclosed10 - 49 employeesWhittier, CARead More
BEAN COUNTER BOOKKEEPING LLC is an accounting and financial advising & planning company. They offer accounting and financial advising & planning and were established in 2007. Their small team is Palm Springs, California-based.
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6Undisclosed250 - 999 employeesIrvine, CAFounded in 1973, Aldrich is an Accounting company. The team provides Accounting and Business Consulting.Read More
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7$1,000+250 - 999 employeesNewport Beach, CARead More
Squar Milner is an accounting firm in Los Angeles with additional locations in Grand Cayman, Cayman Islands, and several other California cities including San Diego, Newport Beach, and Encino. Founded in 1951, they have over 400 employees who mainly serve clients in the business services, education, media, and arts, entertainment and music industries. Their main services include financial accounting, bookkeeping, and tax preparation.
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8$5,000+50 - 249 employeesIrvine, CAMidsize Accounting company Signature Analytics, is based in San Diego, California and Irvine, California. Their services include Accounting and Business Consulting.Read More
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9Undisclosed10 - 49 employeesIrvine, CARead More
Wertz & Company, LLP is a financial accounting firm based in Irvine, Calif., and founded in 2003. Their team of more than 10 offers tax preparation and financial accounting solutions for various clients.
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10$1,000+50 - 249 employeesIrvine, CABased in Los Angeles, California and Torrance, California, Gursey Schneider is a midsize Accounting company. Their services include Accounting.Read More
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11$1,000+250 - 999 employeesIrvine, CASingerLewak is a Los Angeles, California-based Accounting company. They specialize in Accounting.Read More
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12$1,000+1,000 - 9,999 employeesIrvine, CAMarcum LLP, an Accounting company, was launched in 1951. The team specializes in Accounting and is in New York, New York and Irvine, California.Read More
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13$1,000+250 - 999 employeesNewport Beach, CAFounded in 1981, Nigro Karlin Segal Feldstein & Bolno, a midsize Accounting company, is headquartered in Los Angeles, California and San Francisco, California. Their team specializes in Accounting.Read More
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14$1,000+50 - 249 employeesIrvine, CAAccounting company White Nelson Diehl Evans focuses on Accounting. They were founded in 1927.Read More
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15$1,000+50 - 249 employeesIrvine, CAWindes is an Accounting company. They specialize in Accounting and were established in 1926.Read More
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16$1,000+50 - 249 employeesIrvine, CAAccounting company CNM LLP is in Los Angeles, California and Irvine, California. Launched in 2003, the team offers Accounting.Read More
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17$1,000+50 - 249 employeesBrea, CAFrazer, LLP is a midsize Accounting company based in Brea, California and Visalia, California. The team provides Accounting.Read More
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18$1,000+50 - 249 employeesIrvine, CAKSJG LLP is an Accounting company. They are headquartered in Irvine, California. Their team offers Accounting.Read More
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19$1,000+10 - 49 employeesHuntington Beach, CAYH Advisors, an Accounting company, specialize in Accounting. They were launched in 2011.Read More
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20$1,000+10 - 49 employeesIrvine, CARaimondo Pettit Group, an Accounting company, is based in Long Beach, California and Torrance, California. Their services include Accounting.Read More
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21$1,000+10 - 49 employeesIrvine, CAEstablished in 1980, RJI CPAs, a small Accounting company, is headquartered in Irvine, California. Their team specializes in Accounting.Read More
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22Undisclosed2 - 9 employeesNorwalk, CAEmil Estafanous, CPA, CFF, CGMA is an Accounting company. Located in Norwalk, California, the agency was launched in 1985. Their team provides Accounting.Read More
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23$50,000+2 - 9 employeesIrvine, CAAmerican Time and Labor Company is a small Accounting company headquartered in Irvine, California and Oceanside, California. The team focuses on Accounting and PEO/Employee Leasing.Read More
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24$1,000+2 - 9 employeesBrea, CANexus Square, an Accounting company, is based in Brea, California. They offer Accounting.Read More
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25$1,000+2 - 9 employeesAnaheim, CAHR Professional Tax Services Inc is an Accounting company founded in 2001. The company offers Accounting and Tax Law.Read More
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26Undisclosed2 - 9 employeesFullerton, CASmall Accounting company Tandy Consulting Inc, is based in Fullerton, California and Grover Beach, California. The team focuses on Accounting and Fractional CFO Services.Read More
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27$10,000+2 - 9 employeesIrvine, CAEstablished in 2019, Construction Cost Accounting is a small Accounting company. Their services include Accounting.Read More
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28$1,000+50 - 249 employeesIrvine, CAHaskell & White is an Irvine, California-based Accounting company. They offer Accounting.Read More
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29Undisclosed2 - 9 employeesGarden Grove, CACCAL Accountancy is an Accounting company located in Garden Grove, California. The team provides Accounting and Business Consulting.Read More
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30Undisclosed10 - 49 employeesLong Beach, CAOnisko & Scholz, LLP Certified Public Accountants is an Accounting company. Established in 2004, the team offers Accounting.Read More
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