Best Bookkeeping Services near Islip, NY

These companies serve Islip from nearby bases in towns including Melville, Central Islip and Smithtown.

24 companies listed · 1 open 24/7 · 10 open weekends · 22 rated 4.5+ · 2 show a license

Data verified October 21, 2026

Kassman Accounting

Kassman Accounting

(49)
  • Team
  • Efficient
  • The Office
“And it's not just the owner Myles Kassman who is incredible and a true professional, but if you read some of the reviews and see what people say about the other people at the company at many levels, starting with his son Marshall, it's not a one-man ...”
In Business Since 2010
Coupons & Offers
Central Islip, NY · 3 mi from Islip
i
King and Associates, CPA

King and Associates, CPA

(1)
“Quality quick service would recommend them to any of my family members or business associates.”
In Business Since 2006
Free Initial Consultation
Transparent Fees & Pricing
Central Islip, NY · 3 mi from Islip
i
Mlcpas

Mlcpas

(6)
“Mariya is a very knowledgeable tax accountant with world of experience, she is up to date on all the confusing tax laws, if you need someone you can trust and rely on hard working, she's the one.”
In Business Since 2019
East Islip, NY · 1 mi from Islip
i
LCH Bookkeeping

LCH Bookkeeping

In Business Since 2023
West Islip, NY · 6 mi from Islip
i
Notchbooks

Notchbooks

(48)
  • Team
  • Meeting
  • Financial
“Ian or his assistant, Michelle always get back to me within a few hours with answers to any questions I might have or will set up an appt for a phone call if it will take a little longer to discuss.”
In Business Since 2016
Offers Financing Options
Transparent Fees & Pricing
Smithtown, NY · 9 mi from Islip
i
Lindenhurst CPA

Lindenhurst CPA

(43)
  • Questions
  • Email
  • File
“And if I would recommend anyone for this job I am telling you wholeheartedly and let Christ be my witness that he would be the answer you would want to seek for any tax related purposes”
In Business Since 2021
Remote Consultations Available
Transparent Fees & Pricing
Free Initial Consultation
Lindenhurst, NY · 10 mi from Islip
i

The 24 companies listed for Islip, NY keep books, reconcile accounts and close the month for businesses. What each says about its packages and software comes from its own website; ratings and quotes come from public reviews.

Area overview: Islip, NY

23 of the 24 companies on this page have a rating, from 4.0 to 5.0 across 1,239 reviews; 8 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 (98%), responsiveness (88%) and quality (71%). The topics that come up most in reviews of the companies on this page are "knowledge", "efficient" and "communication". 1 is open around the clock; 10 are open on Saturdays and 2 on Sundays. The services the companies on this page list most often on their websites are tax services (9), business services (6), estate planning (4), quickbooks services (4) and services for individuals (4). 2 show a license on their websites and 2 have a BBB rating of A or A+. Domain records put 13 websites of the companies on this page at ten or more years old; the oldest dates from 2004. 1 offers urgent consultations; 6 offer payment plans; 8 offer a free initial consultation and 1 lists coupons or special offers. We count these figures across the companies on this page; hours and prices change, so confirm the details with the company before you book a consultation.

Can I request help online from bookkeepers listed for Islip?

5 of the 24 companies take inquiries or appointment requests through their own website. A company without that option works by phone or email. Whichever you use, say what software you run and roughly how many transactions a month you have. It is what decides the price.

Taxmaster of Melville

Taxmaster of Melville

(50)
  • Questions
  • Efficient
  • Financial
“Even with my 2 businesses plus personal income, Taxmaster has always been right on the money (sorry for the pun), and they help me get the most out of what the gov't offers in tax breaks while staying true to the letter of the law.”
In Business Since 1998
Accepts All Major Credit Cards
Melville, NY · 12 mi from Islip
i
Ross & Company, CPA

Ross & Company, CPA

(50)
  • Questions
  • Information
  • Finance
“They provide an incredible technological platform that allows you several ways to safely upload all your tax documentation and provides a customer portal where you can view your past and present tax information.”
In Business Since 2005
Transparent Fees & Pricing
Mount Pleasant, SC · 656 mi from Islip
i
Montalvo Tax

Montalvo Tax

(50)
  • Questions
  • Goals
  • Confident
“We have nothing but kind things to say- Peter and his staff are very respectful and kind but best of all Peter is very knowledgeable and dedicated to his profession; he will take the time to understand your needs and situation so he can provide the ...”
In Business Since 2017
Massapequa Park, NY · 15 mi from Islip
i
SMG ABA

SMG ABA

(50)
  • Team
  • Tax Laws
  • Efficient
“Smg has been a rock for our restaurants, excellent in depth monthly reports give us a clear picture of how we are doing and if we need to make any changes, they helped us navigate government programs and handle all our tax and payroll needs, they are...”
In Business Since 2021
Islandia, NY · 5 mi from Islip
i
James Castaldo CPA & Associates

James Castaldo CPA & Associates

(49)
“Since 2016 my solution is prevention; james castaldo makes me bulletproof google richard e glick conservative hi-profile author hated by the left in crosshairs leftist lois lerner eric holder obama irs if trump can be criminally prosecuted by irs the...”
In Business Since 2010
Free Initial Consultation
Accepts Debit, Check, All Major Credit Cards
Lake Grove, NY · 10 mi from Islip
i
Herman P Ortiz CPA

Herman P Ortiz CPA

(26)
  • Efficient
  • Financial
  • Informative
“It's so great to speak with an accountant who has stellar customer service skills, explains accounting terminology/ restrictions in an easy-to-understand way, and tries very hard to understand my business and personal concerns.”
In Business Since 2016
Offers Financing Options
Transparent Fees & Pricing
Melville, NY · 12 mi from Islip
i
Ambrosio & Bellotti, Cpas

Ambrosio & Bellotti, Cpas

(2)
“I have been using Ambrosio and Bellotti for as long as I can remember and I can't say enough good things about them!”
In Business Since 2007
Transparent Fees & Pricing
BBB Rating: A
Offers Financing Options
Melville, NY · 12 mi from Islip
i
O'Neill & Associates

O'Neill & Associates

(22)
  • Questions
  • Tax Returns
  • Laws
“Prior to even meeting Pat, he took numerous phone calls from me and walked me through complicated tax queries I had for that given year.”
In Business Since 2020
Free Initial Consultation
Transparent Fees & Pricing
Massapequa, NY · 14 mi from Islip
i
Michels & Hanley Cpas

Michels & Hanley Cpas

(24)
  • Responsive
  • Company
  • Team
“Every step of the way they have been at the top of their game as far as being responsive to any queries I've had, giving me the best advice for important decisions affecting my business and always give me a feeling that they are more than just an acc...”
In Business Since 2006
Offers Financing Options
Transparent Fees & Pricing
Northport, NY · 13 mi from Islip
i
Raisman CPA

Raisman CPA

(14)
  • Generations
“I've been working with Raisman CPA for decades - Al & Cheryl are my go-to CP As for all my business needs and I've only heard great things from all the clients I referred to them over the years.”
In Business Since 2020
Free Initial Consultation
Transparent Fees & Pricing
Smithtown, NY · 9 mi from Islip
i
Eckstein Tax Services

Eckstein Tax Services

(18)
“I work for Guardian in NYC and live in Huntington, NY - my issue was that I was paying City Tax but Michael called me up this evening, explained everything very clearly and concisely to correct the issue on my tax return documents, and I was able to ...”
In Business Since 2021
Transparent Fees & Pricing
Huntington, NY · 13 mi from Islip
i
Rost & Company, Cpas

Rost & Company, Cpas

(11)
  • Team
  • Tax Return
  • Documents
“Overall, I highly recommend Bobby's team for anyone looking for experienced, reliable, and trustworthy accountants who will get get your tax return finalized quickly with a favorable outcome.”
In Business Since 2017
Offers Financing Options
Transparent Fees & Pricing
Free Initial Consultation
Ronkonkoma, NY · 5 mi from Islip
i
Weisman & Co., Cpa's

Weisman & Co., Cpa's

(33)
  • Questions
  • Payment
  • Mind
“They are not only the ultimate professionals in accounting but are always available to answer questions and personal attention that gives you the confidence they are doing whatever they can to help you.”
In Business Since 2005
Licensed
Hauppauge, NY · 5 mi from Islip
i
Anne Napolitano Consulting

Anne Napolitano Consulting

(10)
  • Team
  • Knowledge
  • Needs
“If you want to be a mom & pop operation and do your own bookkeeping, that's fine, but if you want to expand your business, or just have it run seamlessly, AND have time, let ANC handle the numbers.”
In Business Since 2017
Transparent Fees & Pricing
Emergency Services
Remote Consultations Available
Melville, NY · 12 mi from Islip
i
Edward Helm CPA

Edward Helm CPA

(14)
“Im highly recommending Ed and his accounting services to all my friends & family as im very satisfied with his professionalism, communication, timely responses, on point knowledge, and friendly customer service.”
In Business Since 2015
Free Initial Consultation
Massapequa, NY · 14 mi from Islip
i
Sebastiano Vitelli & Co Accountants & Consultants

Sebastiano Vitelli & Co Accountants & Consultants

(1)
“Been using him for 30 years and would never go anywhere else.”
In Business Since 2006
BBB Rating: A
Holbrook, NY · 7 mi from Islip
i
Howard S Cohen

Howard S Cohen

(26)
  • Patient
  • Price
  • Letter
“I have been trying to get a 501c3 charity group registered and approved for over two years by several other so called Accountants, who would tell us our paperwork was wrong and needed to be changed, or they kept needing to re-submit different items,...”
In Business Since 2008
Licensed
Miller Place, NY · 17 mi from Islip
i
Feldman, Weisberg Lesk & Kampfer

Feldman, Weisberg Lesk & Kampfer

In Business Since 1991
Offers Financing Options
Transparent Fees & Pricing
Free Initial Consultation
Huntington, NY · 13 mi from Islip
i
HomeBookkeepersNew YorkIslip, NY

Bookkeeping and Controller Services in Islip, NY Cost Estimates

Minimum cost
$617
Maximum cost
$9194
National Average
$1481
Avg Per Hour Rates
$56
$1111
$2468
Fair price range is based on 462 cost profiles
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Average Cost $1481
Minimum cost $617
Maximum cost $9194
Avg Per Hour Rates $56

Fair range $1111 to $2468 is based on 462 cost profiles.

Why these companies made our list

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