Hire trusted accounting firms in London, Ontario to manage your finances. Use the search filter to compare their client reviews, average rates, team size and budget to find your partner agency in just a few clicks.
Best London, Ontario Accounting Company Rankings
8 Companies - Rankings updated: April 03, 2026
DesignRush assesses agencies using expertise standards and verified client experiences to help you make better decisions. Certain agencies have paid placements.
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Dimov Tax offers expert domestic and international tax and financial services, including individual and business tax preparation, cryptocurrency and stock taxation, IRS/state notice resolution, forensic accounting, M&A consulting, property management accounting, CPA letters, and tailored strategies. [... see all Dimov Tax reviews ]Top Services:
- Accounting
- Payroll
- Bookkeeping
- Location
- London Ontario, Canada
- Number of Employees
- Under 49
- Portfolios Count
- 4 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsDimov Tax Services
Comprehensive analysis done by DesignRush Agency Experts.Clients and Projects
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Audit Accounting Project for Energy & Mining Company All Choice Energy, LLC 
Audit Accounting Project for Manufacturing Company TEDA TPCO America Corporation 
Audit Accounting Project for Retail Company United Wholesale LLC 
Audit Accounting Project for Corporate Services Company Backcountry Broadband LLC
Reviews verified by DesignRush and sourced from the agency's profileDimov Tax Reviews & Testimonials
Accounting Review from Dmitrii Legetskii
This company helped us set up our accounting system from beginning to end. I am a serial entrepreneur with experience working with many different accounting groups and this one has been the most responsive overall. They have helped us with registering the business, putting together payroll, and getting our quarterly tax returns filed. They have been also very helpful with giving personal tax advice. I would recommend them to any other friends and especially other business owners.
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Accounting Review from Setty McIntosh
Services 2 years in a row. George Dimov is now my C.P.A. Excellent, organized, thorough and timely. We were impressed with their patience, courteousness, and efficiency.
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Accounting Review from Undisclosed
They were easy to deal with. George Dimov, CPA successfully delivered the project as per the client's requirements. The service provider utilized Email and messaging apps for effective responsiveness and communication. They were also easy to work with. Ultimately, the client was satisfied with the partnership.
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Data sourced from the agency's DesignRush profileGoogle Apple Cisco Ebay Uber PayPal
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
- London Ontario, Canada
- 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
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
- London Ontario, Canada
- 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
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
- London Ontario, Canada
- 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
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
- London Ontario, Canada
- 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
Together, we achieve more.
Offering project management, business, and IT services. At KPMG LLP, their purpose is to turn knowledge into value for the benefit of their clients, people, and the capital markets. [... view KPMG profile ]- Location
- London Ontario, Canada
- Number of Employees
- 1000 & Up
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsKPMG Services
Reviews verified by DesignRush and sourced from the agency's profileKPMG Reviews & Testimonials
P. J.'s Review Sourced from Google
If you would like to see human beings organized as if they are an ant farm, this is the place.
Show moreKevin Meyer's Review Sourced from Google
Awesome old building on Park, also home to the NFL... Keep your eyes open in the lobby, and you'll undoubtedly run into a player.
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Data sourced from the agency's DesignRush profileFinancial Industry IT Industry Real estate Industry
Building trust in society and solving important problems.
We’re a network of firms in 155 countries with over 284,000 people who are committed to delivering quality in BPO, project management, assurance, advisory, IT, and tax services. [... view PwC profile ]- Location
- London Ontario, Canada
- Number of Employees
- 1000 & Up
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsPwC Services
Reviews verified by DesignRush and sourced from the agency's profilePwC Reviews & Testimonials
Will Moss's Review Sourced from Google
How do you recognise an extrovert auditor? He looks at YOUR shoes whilst talking to you
Show moreStephen Carpenter's Review Sourced from Google
Very impressive entrance in Villiers Street. I walked in there and thought I it might have been a shopping centre, I was told it was not. I walked away .
Show morePaula Cumpik's Review Sourced from Google
Hard to figure out what's where and unfortunately I been to drop a Cv there . They say they don’t know where to send , and better to go in the web side and apply. This is very strange…..
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Data sourced from the agency's DesignRush profileFinancial industry Construction industry IT industry
Venturing Successfully into the Business and Brand World
For over a decade, ZOO Media Group has been turning heads with finely crafted branding and marketing strategies. Our deft touch takes businesses of every size and profile on an unforgettable journey to draw in their clients - all powered by our cutting-edge digital creativity! Through expert advice, skilled [... view ZOO Media Group profile ]- Location
- London Ontario, Canada
- Number of Employees
- Under 49
- Average Hourly Rate
- $149/hr
- Minimal Budget
- $1,000 - $10,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsZOO Media Group Services
Reviews verified by DesignRush and sourced from the agency's profileZOO Media Group Reviews & Testimonials
Amanda Bolte's Review Sourced from Google
ZOO cares about your business. More then marketing and creative professionals, Chris and Sandra listen and understand, and partner with you to craft custom creative solutions proven to work!
Show moreNabanita Das's Review Sourced from Google
ZOO Media went above and beyond for my project. They were friendly, responsive, and made the whole process easy from start to finish. The quality of their work is excellent, and they delivered everything on time. I’m very happy with the results and will definitely use their services again.
Show moreTony H.'s Review Sourced from Google
I had a fantastic experience working with ZOO Media Group. The team was professional, knowledgeable, and truly cared about delivering great results. Communication was clear and prompt throughout the process, and the quality of work exceeded my expectations. I would highly recommend them to anyone looking for reliable and top-quality service.
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Data sourced from the agency's DesignRush profileMission Exteriors MCL atWork
Accounting Firms Near London Ontario
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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