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Combined HCM
- Needs
- Team
- Questions
“Jack's relentless effort in simplifying the transition for us was truly commendable, and David's ability to tailor our onboarding platform to our specific needs was invaluable.”
Best Payroll Services in Diamond Bar, CA
24 companies listed · 6 in Diamond Bar · 7 open weekends · 22 rated 4.5+ · 2 show a license
Data verified October 16, 2026
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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.”
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Harry C. Lin, CPA A Professional Corporation 林清吉聯合會計師事務所
“They're knowledgeable, hard-working, meticulous, extremely thorough, conscientious, and abreast of the latest developments.”
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Mooneem
“I guess, that's why they can charge a fixed price per month and not interested in charging by hour.”
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PFS Global
- Team
- Financial
- Trust
“I highly recommend their services for anyone seeking reliable and skilled professionals in the field.”
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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.”
The 24 companies listed for Diamond Bar, CA run payroll, filings and timekeeping for employers. Service and software details are taken from each provider's own website; ratings and quotes come from public reviews.
Area overview: Diamond Bar, CA
6 of the 24 companies we list are based in Diamond Bar; the other 18 serve Diamond Bar from towns including Pomona (5 mi), Covina (7 mi) and Orange (13 mi). The companies on this page are rated from 4.1 to 5.0 across 805 reviews; 5 have 50 or more reviews and 22 are rated 4.5 or higher. When clients rate these companies on specific qualities, they most often praise professionalism (94%), quality (76%) and responsiveness (76%). 7 are open on Saturdays and 1 on Sundays. The services the companies on this page list most often on their websites are tax services (7), business services (4), payroll services (4), accounting services (3) and services for individuals (3). 2 show a license on their websites and 5 have a BBB rating of A or A+. 17 have ten or more years of experience, the longest 43 years. 1 offers remote or virtual consultations; 4 offer payment plans; 6 offer a free initial consultation; 4 are family- or locally-owned and 1 lists coupons or special offers. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book a consultation.
Which payroll companies listed for Diamond Bar publish service details?
All 24 companies on this page have a website on file. Most list the platforms they run and whether timekeeping, benefits administration and human resources support are sold alongside payroll. Everything stated there is the company's own description.
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A & A Employer Services
- House
- Team
- Small Business
“If you are looking for a highly responsive, ethical, professional and knowledgeable payroll vendor – not to mention very reasonably priced – consider making the switch to A&A Employer.”
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Swift Tax
- Price
- Efficient
“Very helpful to get the most of my refund.”
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Southland Data Processing, an Mpay Company
- Writing
- Team
- System
“Previously, our Company relied on local Employment Attorneys, where their services were costly, inconvenient, and often ineffective and lagging (our questions, concerns and issues were not a priority when attorneys were in court or away).”
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Diamonds Tax
- Understand
- Prices
- Tax Services
“Dalia and her office to file my taxes especially that i don't know anything about the whole process , she is very helpful in a very fast way , honest and make it a very easy process despite of i'm in eastern state ( Connecticut ) , everything is onl...”
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Zamora Tax & Immigration
“Been going to Zamora tax services for over 20 years he has been doing my taxes on my family's taxes miss taxes very helpful very respectful and gets down to business during during the pandemic he has taken all necessary precautions to assure his clie...”
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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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Semper Tax Relief
- Emails
- Team
- File
“At first I had my doubts and concerns, but the customer support team was incredibly helpful and answered all my questions promptly, they were responsive and accommodating.”
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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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Whyte & Associates
- Calls
- Team
- Audit
“A great CPA firm , very professional, Knowledgeable and friendly that provides an excellent service in all accounting areas; I can tell that Steve service saves me thousands of dollars after his consultation and analysis ; the best recommendations fo...”
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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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Epay Payroll
- Questions
- Quality
- Team
“He could have just not responded but he spent time writing me a detailed thoughtful response in order to help me even though it wasn't a service he provides.”
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As Easy As 123payroll.com
- Company
- Tax
- Questions
“Although As Easy As 123 Payroll utilizes all the up to date technology, they have retained the 'personal touch' and 'customer service' that customers received decades ago.”
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Lopez
- Fee
- Price
- Honest
“This is the first time I've gone here to get my taxes done, but I do know that it was extremely professional, and he took his time to answer any of my questions.”
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Fox & Stephens, Cpas
“The level of service and response time I receive when working with Fox & Stephens is unmatched by other firms I've experienced over my 20 years in the industry.”
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Antonious and Associates Tax Consultants
- Bookkeeping
“Antonious and Associates has the best service, i filled my tax last year with them and for sure this year as well, paul is very helpful he answered all my questions he really cares about his clients, and they have a professional and organized staff,”
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Lakeview Professional Services
“For nearly 40 years, Lakeview Professional Services, Inc. has provided Accounting, Payroll, Planning, Budgeting, Human Resource, and other advisory services for the Construction industry.”
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Lou's
“Ive come to Lous Income Tax Service for 3 years now and I will continue to come here for taxes because they have answers for all questions that you may have.”
Why these companies made our list
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