Explore our expert listings of the best accounting firms in Connecticut. Use the filter to sort them by average rates, customer reviews & team size and select the most suitable partner for your business in just a few clicks!
Best Connecticut Accounting Company Rankings
15 Companies - Rankings updated: March 31, 2026
DesignRush vets all agencies based on professional qualifications and verified customer feedback to help you choose confidently. Some featured agencies maintain paid sponsorships.
Empowering Your Accounting Decisions.
Crowe LLP is a global accounting firm offering audit, tax, advisory, and consulting services. With deep industry expertise, we empower businesses to make informed decisions for lasting value. Recognized as a top workplace, we leverage our partnership with Crowe Global to provide comprehensive solutions [... view Crowe profile ]Top Services:
- Accounting
- Business Consulting
- HR Outsourcing
- Location
- West Hartford, Connecticut
- Number of Employees
- 1000 & Up
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsCrowe Services
Reviews verified by DesignRush and sourced from the agency's profileCrowe Reviews & Testimonials
RA's Review Sourced from Google
As an accounting firm I would give them 1 star. I recently discovered a litany of deductions they failed to consider. You will be given an EA, which is just a glorified tax preparer. They will know nothing and be slow to reply. You might as well get your taxes done by H&R block or a proper independent CPA. If these folks do your taxes, get prepared for a larger tax bill. I strongly advise against it.
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Data sourced from the agency's DesignRush profileBanking Industry Food Industry Fintech Industry
IT, Business, BPO, Audit, Tax and Advisory are just the beginning.
Grant Thornton LLP (US) is an IT, project management, audit, tax, AgTech, and BPO company headquartered in Chicago, Illinois with over 50 U.S. offices and access to a global network or member firms in over 135 countries. We offer a broad range of services in strategy and consulting, operations, technology and [... view Grant Thornton profile ]- Location
- Hartford, Connecticut
- Number of Employees
- 1000 & Up
- Average Hourly Rate
- $35/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 2 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsGrant Thornton Services
Comprehensive analysis done by DesignRush Agency Experts.Clients and Projects
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Financial Accounting Project Finance modernization for data-driven expansion -thumb-webp.webp)
Business Operations Consulting Project A new procurement paradigm at BDTX
Reviews verified by DesignRush and sourced from the agency's profileGrant Thornton Reviews & Testimonials
Theodore Mall's Review Sourced from Google
One of the world’s leading organizations of independent audit, tax and advisory firms. Grant Thornton has revenues in excess of $1.9 billion and operates more than 50 offices.
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Data sourced from the agency's DesignRush profileFinancial industry Real estate industry Media and Entertainment industry
- Wolters Kluwer (www.wolterskluwer.com) is a global leader in information services and solutions for professionals in the health, tax and accounting, risk and compliance, finance and legal sectors. We help our customers make critical decisions every day by providing expert solutions that combine deep domain [... view Wolters Kluwer profile ]
- Location
- Stamford, Connecticut
- Number of Employees
- Under 49
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsWolters Kluwer Services
Data sourced from the agency's DesignRush profileHealth Tax & Accounting Finance Compliance Legal
Collaborating for Lasting Impact in Business Consulting
Join us at Deloitte, where we believe that our collective influence is the cornerstone of our value. With a rich legacy spanning over 175 years and a global network encompassing 150 countries, we empower remarkable achievements, solve complex problems, and drive meaningful progress for clients, professionals [... view Deloitte profile ]- Location
- Hartford, Connecticut
- Number of Employees
- 1000 & Up
- Portfolios Count
- 6 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsDeloitte Services
Comprehensive analysis done by DesignRush Agency Experts.Clients and Projects
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Business Consulting Project How Deloitte helped a large fast food company become a leader in sustainability. -thumb-webp.webp)
Business Operations Consulting Project Not zero Modelled Reimagined Simplified Net zero -thumb-webp.webp)
Strategy Consulting Project Lagging Shifted Coached Moved Leading -thumb-webp.webp)
Business Consulting Project From Monitor to Protect
Reviews verified by DesignRush and sourced from the agency's profileDeloitte Reviews & Testimonials
InlineAdam's Review Sourced from Google
So sphiscated accounting systems I must say. For what? Never saw an irs payable in any return they asked me to prepare although I’m no licensed accountant. No names no whistle just a honest google review. Makes me wonder what an accountant does, cooking books or AICPA reporting them. No mark up in my basis. The roc building is beyond comprehension though, they even do SNL up or down stairs never got to see a show so I don’t know
Show moreModernfoldStyles, Inc.'s Review Sourced from Google
We are proud to have been able to offer a beautiful Modernfold panel recovery job to give the walls a facelift to complete newly renovated meeting rooms at Deloitte in Rockefeller Plaza. Deloitte has always been such a great and dear client of ours! We look forward to continuing to work together in the future!
Show moreAlex Stackhouse's Review Sourced from Google
Deloitte completely failed implementation of Army IgnitEd, which led to thousands of service members paying out of pocket for education expenses. The circus that we watched unfold leaves me with zero confidence in the services that this firm provides.
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Data sourced from the agency's DesignRush profileFinancial industry Government Sector IT industry Manufacturing industry Telecommunications industry
- Whittlesey is the largest regional CPA and IT consulting firm in New England. With offices in Hartford, CT, Hamden, CT, and Holyoke, MA, we provide a comprehensive array of advisory, assurance, tax, and technology services. [... view Whittlesey profile ]
- Location
- Hartford, Connecticut
- Number of Employees
- 100 - 249
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsWhittlesey Services
Reviews verified by DesignRush and sourced from the agency's profileWhittlesey Reviews & Testimonials
Sandra Smith's Review Sourced from Google
I they do not care about their customers!I have been with them for over 40 years! I was just notified I was no longer wanted as a client.I called and text 3 people I knew there, asking why they were canceling my simple tax account.NO ANSWERES. Then a month later I got an email saying they were down sizing!Is this how you treat a loyal customer of over 40 years that does a simple tax return? I always relied on this company and the people in it. I feel so disrespected. I would never trust them again.
Show morePeter Keast, Sr.'s Review Sourced from Google
Computer technology has vastly improved many of our lives, even in the non-profit world. The issues are cost, reliability and maintenance. It is too much for a small business owner to become an expert in these areas. I'm not even sure it is possible. Having a partner - a paid vendor, yes, but a still a partner that respects your budget, responds quickly to problems as they arrive, and proactively seeks to protect your network from crashes and malware is invaluable. We feel like we have that partner with Whittlesey Technologies. Every year we meet to discuss vendor agreements and performance. Whittlesey Technologies has never been considered for replacement. They are our partner.
Show moreP Cado's Review Sourced from Google
We have been using Whittlesey Technology as our service provider since the mid 2000’s. They have managed multiple server & software implementations over the years with ease while giving us the communication and proactive guidance we need. They have also provided very responsive day to day support. We look at Whittlesey as a trusted partner and part of our team.
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Data sourced from the agency's DesignRush profileThe Motorlease Corporation Virginia Industries Guilford Savings Bank
Let us handle the paperwork, so you can handle the profits.
The Human Resource Consulting Group (HRCG) is your full-service HR consulting and outsourcing firm, offering payroll processing, compliance management, time and attendance, and benefits administration. With over 32 years of experience, we're committed to freeing you from administrative paperwork so you can [... view The Human Resource Consulting Group, LLC (HRCG) profile ]- Location
- Seymour, Connecticut
- Number of Employees
- Under 49
- Portfolios Count
- 2 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsThe Human Resource Consulting Group, LLC (HRCG) Services
Comprehensive analysis done by DesignRush Agency Experts.Clients and Projects
View Full Portfolio
HR Consulting Project Mitchell/Richards 
HR Consulting Project Kamco
Reviews verified by DesignRush and sourced from the agency's profileThe Human Resource Consulting Group, LLC (HRCG) Reviews & Testimonials
Mike Wittenstein's Review Sourced from Google
My state mistakenly overcharged me. My team at HRCG stuck with it, followed through, and got the extra payment credited back to my account. All, with just a simple email request. If you want big company service and clout at small company prices, look no further!
Show moreMaria Santos's Review Sourced from Google
The Human Resources Consulting Group team delivers exceptional service. If your looking for a company to handle all your payroll needs this is the place. Everyone there is extremely helpful and a pleasure to deal with.
Show moreJennifer's Review Sourced from Google
The Human Resource Consulting Group team are true experts in their field. They give commercially focused advice tailored for our business needs. They get to know your organization and goals, then they ensure that you have the people management strategies in place to make it all happen. I wholeheartedly recommend HRCG!
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Data sourced from the agency's DesignRush profileKAMCO Supply Corp. Mitchell/Richards HR Consulting
We are committed to providing close, personal attention to our clients and offer them direct access
Over 50 years in providing valuable, quality, and timely accounting and taxation services for both the individual and business communities. [... view PLLP profile ]- Location
- Avon, Connecticut
- Number of Employees
- Under 49
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsPLLP Services
Data sourced from the agency's DesignRush profileIT Industry Small Business Industry Finance Industry
Global Business Consulting Excellence
Protiviti is a global consulting firm that offers deep expertise, objective insights, and tailored solutions to empower leaders in tackling future challenges. With a comprehensive range of services spanning finance, technology, operations, data, analytics, governance, risk, and internal audit, we serve [... view Protiviti profile ]- Location
- Stamford, Connecticut
- Number of Employees
- 1000 & Up
- Portfolios Count
- 5 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsProtiviti Services
Comprehensive analysis done by DesignRush Agency Experts.Clients and Projects
View Full Portfolio-thumb-webp.webp)
Compliance Consultancy Project A strategic co-sourcing partnership: Healthcare system chooses Protiviti as its trusted adviser in internal audit and compliance -thumb-webp.webp)
Business Consulting Project Strong, flexible identity and access management, built collaboratively
Data sourced from the agency's DesignRush profileKnowBe4 Resolver PowerSchool
We are handing out fishing poles, not fish.
Leverage BPO, a global business process outsourcing company, offering USA companies who are wishing to grow, or for those already developed, and wishing to stay nimble, the opportunity to outsource business processes, [... view Leverage BPO profile ]- Location
- Shelton, Connecticut
- Number of Employees
- Under 49
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsLeverage BPO Services
Data sourced from the agency's DesignRush profileIT industry Financial industry Small business industry
Satisfied Candidates, Happy Customers
Hire Whoever, Wherever, Whenever.Easily Onboard, Insure, Pay and Manage your workforce with our all in one solution. [... view Headcount Management profile ]- Location
- Norwalk, Connecticut
- Number of Employees
- Under 49
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsHeadcount Management Services
Reviews verified by DesignRush and sourced from the agency's profileHeadcount Management Reviews & Testimonials
Gallagher and Consultants's Review Sourced from Google
Headcount Management has provided us the flexibility and resources to employ our team to punch above our weight. Their flexibility and support are especially valuable to startups and niche consultancies, a market that few EOR providers actively target.
Show moreJuliette's Review Sourced from Google
We have a long working relationship with Headcount Management, who have assisted our business with a number of EOR requirements. Nik is our assigned account manager, who manages queries in a quick, friendly and efficient manner. We would have no hesitation in recommending their services to others.
Show moreBeth Simpson's Review Sourced from Google
Headcount is the best back-office support management company around. We have been working with them since 2010, and we have never been happier with their services and support. Plus, we have never had any issues with our contractors getting paid on time or getting our back-office needs met. Headcount is a true business partner and is always quick to respond to our growing business needs. Whether it is a call with their incredibly insightful and knowledgeable team or a client's urgent needs, they are adept, responsive, and helpful.
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Data sourced from the agency's DesignRush profileIT Industry Non Profit Industry Retail Industry
Building A Better Working World
EY offers Accounting, Business Consulting, and IT Services with a mission to build a better working world. It provides insights and quality services that instill trust in global capital markets and economies. EY focuses on developing exceptional leaders who deliver on their commitments to all stakeholders [... view EY profile ]- Location
- Hartford, Connecticut
- Number of Employees
- 1000 & Up
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsEY Services
Data sourced from the agency's DesignRush profileQiagen Apple ASOS Microsoft Wawa
Transform your digital landscape with our bespoke Digital Marketing Services & Ecommerce Solutions!
Founded in 2006, Saevah is an ISO 9001 Certified company, and a trusted partner for digital marketing and ecommerce solutions that require the perfect balance of technology and people power. [... view Saevah profile ]- Location
- Brookfield, Connecticut
- Number of Employees
- 50 - 99
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsSaevah Services
Data sourced from the agency's DesignRush profileHealth Products For You Rehab Store Decorators Best Stanzme Interact123 Law Office of Afsha Rangwala Shop Wound Care Damozelle
Expert Accounting for Your Business Growth
Presti & Naegele is a leading accounting and advisory firm based in New York City that delivers tailored financial management services. Its expert team provides tax, accounting, and strategic advisory solutions to meet unique business and individual needs. With over 40 years of experience, the firm [... view Presti & Naegele Accounting And Advisory Services profile ]- Location
- Stamford, Connecticut
- Number of Employees
- Under 49
- Average Hourly Rate
- $199/hr
- Minimal Budget
- $1,000 - $10,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsPresti & Naegele Accounting and Advisory Services Services
Reviews verified by DesignRush and sourced from the agency's profilePresti & Naegele Accounting and Advisory Services Reviews & Testimonials
J. Kim Young's Review Sourced from Google
Presti & Naegele came recommended to me for their expertise with business accounting, but they are also excellent at handling personal accounting. Irina N. and John J. have been the absolute best and I wholeheartedly recommend them.
Show moreJon Hood's Review Sourced from Google
P&N regularly works with my business clients to help them navigate tricky tax issues. The entire P&N team is professional, responsive, and tailors solutions to match my clients' unique needs. I cannot recommend P&N highly enough for new or established businesses (or individual business owners) who need help on the tax front.
Show moreLinda Garay's Review Sourced from Google
Confidence in the accuracy and completeness of our financial recordings is paramount to me. Our business is of modest size and we use the most basic QuickBooks software package but the dynamics of your business can be complicated.We are fortunate to have Lee (our P&N representative) on our side. Lee promptly replies to any questions we may have with a thorough explanation. I am also certain that our documents and calculations are scrutinized before the preparation of our tax return and prior to their submission. Thank you Lee!
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Data sourced from the agency's DesignRush profileConstruction Industry Food Industry Retail Industry
Leading With Financial Innovation
The Innovative CPA Group offers comprehensive accounting services, from tax preparation to business consulting. Its team uses cutting-edge technology and a collaborative approach to provide tailored solutions for individuals and businesses. Focused on empowering clients and guaranteeing accountability, The [... view The Innovative CPA Group profile ]- Location
- Shelton, Connecticut
- Number of Employees
- 100 - 249
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsThe Innovative CPA Group Services
Reviews verified by DesignRush and sourced from the agency's profileThe Innovative CPA Group Reviews & Testimonials
GM Realty's Review Sourced from Google
The Innovative CPA Firm is the real deal. I switched accountants in 2024 and was shocked to see an estimated tax bill of over $170,000! I started searching for a CPA who truly understands Real Estate - and I am so glad I found this team. After digging in and doing the hard work, they saved me over $120,000! They really know how to categorize things properly and help minimize taxes. Super knowledgeable, easy to work with, and honestly just really smart people. Highly recommend!
Show moreMargaret Smith's Review Sourced from Google
The Innovative CPA group is an excellent firm. Everyone from the receptionist to the accountants are friendly and knowledgeable. Our personal accountant is Pamela Matocha. Pamela is extremely knowledgeable and helpful. She also gets our tax return completed quickly. This year her client ( my mom) passed away. Pamela was so thoughtful and efficient in answering my questions and getting my mother’s tax return done quickly and thoroughly. She was so helpful to me during the entire process. I would highly recommend this accounting firm without hesitation.
Show moreEd908's Review Sourced from Google
I have used this firm for about 10 years and have seen them grow and merge with another firm. They continue to provide excellent service. I have worked with Zach Smith the last couple of seasons and he has been very responsive. Keep up the good work!
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Data sourced from the agency's DesignRush profileCannabis Industry Manufacturing Industry Construction Industry
Innovative Solutions, Trusted Relationships.
A trusted New York CPA and advisory firm combining tradition and innovation to deliver comprehensive financial solutions and build enduring client relationships. [... view Hertz Herson CPA profile ]- Location
- Avon, Connecticut
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $149/hr
- Minimal Budget
- $1,000 - $10,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsHertz Herson CPA Services
Data sourced from the agency's DesignRush profileApparel Industry Consumer Products Distribution & Import Industry
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About The Author and Expert Reviewer
Natasa Glikman is an experienced editor and content writer with over 10 years of experience in writing, editing, and translating articles across various topics, with a strong focus on marketing and advertising. At DesignRush, Natasa currently works as an editor, where she refines and enhances B2B content to ensure accuracy, clarity, and consistency across agency profiles and industry reports.
Dušan Milutinović is a finance expert with an MBA from Purdue University in the U.S. He has gained over 15 years of experience from his roles as the CFO of Serbia Broadband, Board Member of Hemofarm AD, General Manager of STADA, and Consultant at IFC (Member of The World Bank), as well as KPMG (BearingPoint). He is currently the Senior Finance Manager at DesignRush, overseeing the company's finance, administration, and reporting processes.
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