Paul Goodnough CPA
“I am much appreciative of his, (and his assistant Kelly), efforts to keep me and my small business in compliance with the IRS .”
Best QuickBooks Consulting & Training in Simi Valley, CA
15 firms listed · 8 in Simi Valley · 2 open weekends · 14 rated 4.5+
Data verified October 31, 2026
HLW Tax
“The whole office is professional and friendly, and the work is done with high levels of communication, competency, and integrity.”
Numbercrunchers
“Paula is very knowledgable in her field and I feel confident having Numbers Crunchers do our yearly returns.”
Kepple Edward CPA
“Have been a client for years, excellent knowledgeable CPA”
Strategic Financial Reporting
Arxis Financial
The 15 firms listed for Simi Valley, 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.
Area overview: Simi Valley, CA
Of the 15 firms we list here, 8 are in Simi Valley itself and 7 come from towns including Westlake Village (3, 10 mi), Thousand Oaks (2, 9 mi) and Calabasas (1, 8 mi). The firms on this page are rated from 4.2 to 5.0 across 163 reviews; 14 are rated 4.5 or higher. When clients rate these firms on specific qualities, they most often praise professionalism (100%), quality (87%) and responsiveness (87%). 2 are open on Saturdays. The services the firms on this page list most often on their websites are quickbooks services (3), tax preparation (3), tax services (3), back taxes owed (2) and bank financing (2). 2 have a BBB rating of A or A+. 13 have ten or more years of experience, the longest 79 years. 4 offer payment plans and 2 offer a free initial consultation. We have a website on file for all 15 of the firms on this page; all 15 publish a contact page; 12 list a public email and 2 take bookings online. 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.
Why are software consultants outside Simi Valley listed here?
Within Simi Valley there are 8 of the 15 firms shown here. The remainder come from other towns inside 10 mi. Nearly all of this work happens over a screen share, so distance rarely matters. Distances are straight-line.
Michael J White CPA
“They have been a good business partner in our community and I would not hesitate recommending their services.”
Winther & Co
A Working Woman
“Lani quickly and efficiently went through all 4 years and now he is receiving very nice refunds.”
David Reinus CPA
“I never feel alone in the financial side of my business, and am grateful to have retained his firm for my accounting needs.”
MBA Financial & Accounting Solutions
“Mark was extremely knowledgeable and was happy to answer all my questions, and took his time educating me on my return.”
Fridman & Associates
“I'm not the best client as I often scramble just before taxes are due but somehow the man gets the job done.”
Alphatax Tax Service
Jacobs & Jacobs
“We have been working with Gregg Burt for over 15 years and have had wonderful service and support in managing our taxes and other accounting related items.”
Pik Accounting
“Don't go anywhere else for your taxes!!”
Why these companies made our list
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