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24 firms listed · 6 in Costa Mesa · 7 open weekends · 20 rated 4.5+
Data verified October 16, 2026
The 24 firms listed for Costa Mesa, CA handle audits, assessments, liens and collection disputes for clients. What each says about the matters it takes on comes from its own website; ratings and quotes come from public reviews.
6 of the 24 firms we list are based in Costa Mesa; the other 18 serve Costa Mesa from towns including Irvine (8 mi), Santa Ana (5 mi) and Garden Grove (8 mi). 21 of the firms on this page have a rating, from 4.1 to 5.0 across 5,412 reviews; 11 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 (95%), responsiveness (77%) and quality (69%). The topics that come up most in reviews of the firms on this page are "knowledge", "patient" and "trust". 7 are open on Saturdays and 2 on Sundays. The practice areas the firms on this page list most often on their websites are tax preparation (4), estate planning (3), tax resolution (2), tax resolution services (2) and tax services (2). 6 have a BBB rating of A or A+. 21 have ten or more years of experience, the longest 26 years. 9 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.
Of the 24 firms on this page, all 24 have a website on file. Most set out whether they handle examinations, collection matters, appeals or criminal exposure, and those are genuinely different practices. It is the firm's own description, so read it as a claim rather than a verification.
