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Christopher G Carmona CPA
“I recently had the pleasure of working with CPA Christopher for my tax preparation, and I must say, I am extremely impressed with his professionalism, knowledge, and efficiency.”
Best CPAs in Diamond Bar, CA
24 firms listed · 6 in Diamond Bar · 1 open 24/7 · 5 open weekends · 20 rated 4.5+
Data verified October 15, 2026
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Harry C. Lin, CPA A Professional Corporation 林清吉聯合會計師事務所
“Tax experts”
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Mead, Coley and Company Cpa's
“We have been using Mead, Coley & Company for our personal and business accounting needs for several years.”
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Millennial Cpa, Tax & Accounting
“"If a small business works with an accountant, their odds of success go up 89%. Thanks to a savvy accountant's judgment, intuition and ability to recognize trends and patterns."”
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Patrick W. Medlock, CPA
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FAN & LI
“Our accountants are board certified and stay current with continuous certifications and seminars to ensure we are up-to-date on all of the newest information, laws, regulations, and techniquesin our field.”
The 24 firms listed for Diamond Bar, CA are accounting practices that serve businesses and organizations. What each states about its CPA license and assurance work comes from its own website; ratings and quotes come from public reviews.
Area overview: Diamond Bar, CA
6 of the 24 firms we list are based in Diamond Bar; the other 18 serve Diamond Bar from towns including Brea (6 mi), West Covina (7 mi) and Whittier (12 mi). 21 of the firms on this page have a rating, from 4.0 to 5.0 across 478 reviews; 3 have 50 or more reviews and 20 are rated 4.5 or higher. When clients rate these firms on specific qualities, they most often praise professionalism (96%), responsiveness (75%) and quality (71%). 1 is open around the clock; 5 are open on Saturdays and 3 on Sundays. The services the firms on this page list most often on their websites are tax services (10), accounting services (5), business services (4), industries (3) and payroll services (3). 1 shows a license on its website and 9 have a BBB rating of A or A+. 18 have ten or more years of experience, the longest 44 years. 1 offers urgent consultations; 4 offer payment plans; 7 offer a free initial consultation and 2 are family- or locally-owned. We count these figures across the firms on this page; distances are straight-line, and hours and prices change, so confirm the details with the firm before you book a consultation.
Which CPA firms listed for Diamond Bar list their assurance services?
Website details are held for all 24 firms on this page. Most name the engagement types they perform and the industries they serve, which is the quickest way to see whether audit work is core business or an occasional job for them.
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Paul Carney CPA
- Corporate
- Tax Preparation
- Deadline
“Although this is not Paul's area of expertise, he went out of his way to explain some of the benefits and drawbacks of delaying receiving SS, which was appreciated.”
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Business Management Associates Family Office
- Job
- Info
- Questions
“Went in to have them look over my taxes, and they were very quick ,knowledge and had every answer to every question i had i highly recommend them all, very friendly and down to earth people.”
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MY TAX DOC Inc, Cpa's
- Corporation
- Small Business
- Confidence
“As an independent contractor in a field that keeps me busy 8-10 hours a day, it's been amazing to know that the financial logistics are sorted properly and I can mainly focus on work and clients.”
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HRL TAX Solutions
- Business Tax
- Questions
- Price
“I came in with my elderly father for taxes, and Henry was able to sit down with us and answer, in full detail--AND IN MANDARIN-- all of the questions that were asked, clearing up decades of confusion.”
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Elite Accountants Group
- Patient
“Tax extension deadline was approaching and I had called several Tax offices without much success, but when I called Elite Accountants Group, Ahmad answered and an appointmen was made.”
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Scott Hukriede, CPA
“He does an amazing job, I even fight the traffic from Los Angeles to Anaheim to meet with him.”
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Ayoub & Associates CPA Firm
- Team
- Financial
“I had a bad year financially, I had put taxes aside and was just worried about what the damage would be, turned out I was way ahead because I followed his advice, setup numerous things he told me to do, and when everything was said & done, I ended up...”
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Nexus Square
- Finances
- Tax Return
- Non-Profit
“I highly recommend you call to schedule an appointment to meet them first hand and see for yourself what a five star accounting firm can do for you and your generations to follow.”
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Pelletier & Leo
- Individual
- Patience
- Intelligent
“Excellent, Trustworthy & Reliable.”
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Chris Haro, CPA
- Information
- Understanding
“After being with my old tax preparer for over 15 years - who then decided to close shop and not tell any of her loyal customers - Chris Haro, and his staff, came to the rescue and made the whole process so easy and literally saved the day!”
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Smartcpa - Chino Hills
- Questions
- Books
- Numbers
“Be sure to contact Smart CPA and ask for either of them if you have an incredible idea and need pitch.”
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James F. Hundshamer, Certified Public Accountant
“They do an excellent job and help me and my business with all of our difficult accounting needs.”
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Fathy & Associates
“They are fast too - staying on top of what documents you need - everything gets done in a timely manner.”
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Dennis J Tisdale, CPA
“Answered my questions ON TAX DAY, rather complicated and he helped me get to the bottom of my concerns.”
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Desi Tax & Bookkeeping
“I have multiple tax service needs, everything from past due amounts from past few years back to straight forward tax filing for last year.”
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Brhe Group
“I wanted to take a moment to share my experience with BRHE Group that has been an invaluable asset to my business and personal tax needs.”
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Ayoub, Sidhum & Co.
“I've also called a few times before coming in to make sure I have everything I need (5+ times) which I'm sure is probably time consuming during the tax season but when someone answers they are always willing to help with an upbeat reaction.”
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Mike Habib, EA
- Information
- Mind
- Matter
“Thanks to Mike, we now have peace of mind knowing our issue will be resolved, and we can live our lives without the threat of being financially under water.”
Financial Statement Audit Services in Diamond Bar, CA Cost Estimates
Minimum cost
$1053
Maximum cost
$3683
National Average
$2105
Avg Per Hour Rates
$316
$1894
$2631
Fair price range is based on 468 cost profiles
Why these companies made our list
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