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24 firms listed · 12 in Costa Mesa · 4 open weekends · 19 rated 4.5+
Data verified October 16, 2026
The 24 firms listed for Costa Mesa, CA set up, repair and teach accounting software for businesses. What each says about certifications and supported platforms comes from its own website; ratings and quotes come from public reviews.
Of the 24 firms we list here, 12 are in Costa Mesa itself and 12 come from towns including Irvine (4, 8 mi), Santa Ana (2, 5 mi) and Fountain Valley (1, 4 mi). 23 of the firms on this page have a rating, from 4.2 to 5.0 across 865 reviews; 7 have 50 or more reviews and 19 are rated 4.5 or higher. When clients rate these firms on specific qualities, they most often praise professionalism (95%), responsiveness (82%) and quality (78%). The topics that come up most in reviews of the firms on this page are "knowledge", "patient" and "efficient". 4 are open on Saturdays and 2 on Sundays. The services the firms on this page list most often on their websites are business services (5), tax services (5), quickbooks services (4), services for individuals (3) and business consulting (2). 5 have a BBB rating of A or A+. 18 have ten or more years of experience, the longest 47 years. 1 offers remote or virtual consultations; 4 offer payment plans; 5 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.
All 24 firms on this page have a website on file, and most name their certifications and the platforms they support. Certification status can be checked on the vendor's own directory, which is worth doing before the first call.
