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Notchbooks
- Small Business
- Financial
- Meeting
“Ian has been very helpful with our filings and planning advice, as needed, helping us to understand the implications of tax law on our current and future decisions.”
Best QuickBooks Consulting & Training near Brookhaven, NY
There are no firms listed in Brookhaven itself yet; the 24 below are the closest options, from towns including Port Jefferson Station (3, 8 mi), Sayville (2, 10 mi) and Islandia (2, 12 mi).
1 open 24/7 · 6 open weekends · 23 rated 4.5+
Data verified October 21, 2026
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Edwin Casanova, CPA
- Understanding
- Stress
- Efficient
“I have not been the most organized and punctual person to work with through the years but always met with patience and understanding from Edwin and Elise.”
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Ross & Company, CPA
- Responsive
- Information
- Knowledge
“We dedicated countless hours and worked very hard on our store stocking our virtual shelves and shipping thousands of packages to customers across the country.”
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Kassman Accounting
- Tax Return
- The Office
- Efficient
“I've had a business for 19 years and dealt with other accountants that didn't have the knowledge and understanding of the right things to do for me.”
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SMG ABA
- Management
- Efficient
- Tax Laws
“SMG ABA LLC for a few years now, They have really separated themselves with the level of service and expertise that I haven't found with any other CPA Accounting firm before”
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Saranto Calamas Office
- Decision
- Future
- Saving
“ Starting as a young professional in business through the other accounting needs that come with living a full life - handling of wills, estates and tax planning.”
The 24 firms listed for Brookhaven, NY 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: Brookhaven, NY
The 24 firms on this page are rated from 4.2 to 5.0 across 966 reviews; 6 have 50 or more reviews and 23 are rated 4.5 or higher. When clients rate these firms on specific qualities, they most often praise professionalism (91%), responsiveness (74%) and quality (68%). The topics that come up most in reviews of the firms on this page are "knowledge", "communication" and "efficient". 1 is open around the clock; 6 are open on Saturdays and 1 on Sundays. The services the firms on this page list most often on their websites are tax services (10), business services (8), quickbooks services (5), services for individuals (3) and all our accounting services (2). 18 have ten or more years of experience, the longest 33 years. 1 offers urgent consultations; 8 offer payment plans; 9 offer a free initial consultation and 1 lists coupons or special offers. We have a website on file for all 24 of the firms on this page; all 24 publish a contact page; 20 list a public email and 4 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.
Which software consultants listed for Brookhaven list their certifications?
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.
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James Castaldo CPA & Associates
“I've had some severe tax complications, but James, Justin, and the team were able to help me recognize reality and put me at ease with proper tax planning, recommended solutions, and examined the way forward.”
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Long Island Tax, Accounting, & Advisory Services
- Team
- Knowledge
- Tax Returns
“I am so happy I found long Island tax and accounting I had years of back taxes that they helped with and I am finally free of the fear of oweing the government money they are the best”
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Michael Verderosa CPA P.C
- Patient
- Job
- Communication
“He is more than just a tax guy he understands tax laws and is helping me grow my business he is very helpful and takes time to understand you situation and give you the best advice”
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JLW Accounting and Tax Services
- Financial
“Judi Wallace of JLW Financial Services has done an amazing job handling the bookkeeping for my real estate business, my husband's dental business and our personal bills.”
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Ferrera Destefano & Caporusso Certified Public Accountants
“Excellent service from very professional group of accountants and staff.”
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Peggiann McCoy CPA
“Caring Personal /Professional Attention that's what the CPA stands for after her name”
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O'Hara & Company
“Extremely satisfied with their services.”
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Nick J. Giannitsas CPA
“His attention to detail and tax expertise, along with being a really nice guy makes him 5 stars.”
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Cullen & Danowski
“Always satisfied with the quality of work and the personalized service.”
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Sampson Business Solutions
- Team
“Having a proactive accounting firm was the difference of getting immediate help to keep us in business, and that is what you need in todays rapidly changing business world.”
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King and Associates, CPA
“Quality quick service would recommend them to any of my family members or business associates.”
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Giambalvo, Stalzer, & Co., Cpas
“Sometimes when I have conversations with friends, patients or other acquaintances, I realize that having wound up as a client of Bob Giambalvo in 1990, when I was just getting started in my career, was a twist of fate that precipitated my ability to ...”
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Newton Sankey & Co.
“Newton Sankey & Co has been my accountant for my business and personal for the past 7 plus years.”
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James P Phelan CPA
“Everyone here is friendly and they care about serving their customers.”
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Cloudbooks Accountant QB Proadvisor
- LLC
“Very knowledgeable & quick service.”
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Peter R. O'Leary, CPA
“He handled my personal and buisness accounting for a few years until i moved to another state.”
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S.O Accounting & Consulting
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B. Frederick CO. Cpas
“My favorite part is that you can send him your documents and never have to go in if you didn't want to but he also has a beautiful office on Main Street if you prefer in person service.”
Why these companies made our list
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