3 Best Accounting Firms in Thunder Bay, ON

Expert-recommended Top 3 Accounting Firms in Thunder Bay, ON. All of our Accountants actually undergo a rigorous 50-Point Inspection, which includes everything from checking reviews, ratings, reputation, history, complaints, satisfaction, trust and price - all to ensure overall excellence. You deserve only the best!

11+ YEARS ON TBR
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LCPS CHARTERED ACCOUNTANTS

1070 Lithium Drive,
Thunder Bay, ON P7B 6G3 Directions

Since 1998

Specialty:

✓Cloud-based Accounting ✓Bookkeeping ✓Assurance Engagements ✓Compilation Engagements ✓Review Engagements ✓Audit Engagement ✓Taxation Services ✓Commodity Taxes ✓Corporate Taxation Services ✓Personal Tax Returns ✓Business Acquisitions ✓Corporate Reorganizations ✓Incorporating A Business ✓Succession Planning ✓Retirement Planning ✓Estate Planning

"LCPS Chartered Accountants provides assurance services such as auditing and review engagements, compilation engagements, and bookkeeping. They are a member firm of the Institute of Chartered Professional Accountants of Ontario and licensed under the Public Accountancy Act. Their team has many years of experience in auditing and attest services and is well-equipped to assist you in meeting your company's audit obligations. LCPS Chartered Accountants specializes in offering a full range of taxation advisory and compliance services, as well as tax planning, specializing in family-owned and owner-managed businesses. Their entire team is committed to helping you grow your business and create a valuable asset for yourself. The firm aims to simplify and apply focus to its various services. They use the very best and most advanced cloud-based accounting applications to give your business accurate, reliable and real-time information so you can focus on making the important decisions to grow your business.

2026 Highlights: John Luft, Derek Tycholas, Mike Speer, and Allan Prenger are the partners of the firm."

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2026 Community Votes Thunder Bay Platinum Winner
License #1001465018

Contact:

(807) 623-0600 (807) 623-0400

Mon-Fri: 8:30am - 5pm
Sat & Sun: Closed

TBR® Inspection Report:

One to One Accounting Services - Thunder Bay, ON Accounting Firms - Office Exterior Image
One to One Accounting Services - Thunder Bay, ON Accounting Firms - Company Logo
6+ YEARS ON TBR
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ONE TO ONE ACCOUNTING SERVICES

2826 Arthur Street East,
Thunder Bay, ON P7E 5P4 Directions

Since 1992

Specialty:

✓Paperless Accounting ✓Bookkeeping Services ✓Payroll ✓Income Tax ✓Business Coaching ✓Small Business Planning ✓Business Financial Analysis

"One To One Accounting Services is owned and operated by Karen Tretter. She has over 25 years of experience in accounting, business planning, and business coaching. The firm has been providing tax and business services to over 1000 personal and business clients in Northern Ontario each year. One-To-One Accounting Services provides digital, cloud-based income tax preparation, paperless accounting services and digital technology training to businesses in Northern Ontario and across Canada. They will teach business-friendly digital technology, goal setting, planning, financial literacy, and financial evaluation, along with strategies and skills to grow their businesses. The firm will continue offering all of its previous services and will support these entrepreneurs with their new skills to ensure that digital technology is implemented in their businesses. Whether you're seeking expert tax preparation, business coaching, or a financial analysis, they assist you every step of the way.

2026 Highlights: The firm also provides e-tax service. they use an online e-Courier so that the clients can share their files securely."

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License #290558329

Price:

Income Tax Returns $135

Contact:

(807) 473-5800

Mon-Fri: 9am - 5pm
Sat & Sun: Closed

TBR® Inspection Report:

7+ YEARS ON TBR
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MNP LLP

1205 Amber Drive, Suite 210,
Thunder Bay, ON P7B 6M4 Directions

Since 1958

Specialty:

✓Assurance and Accounting ✓Corporate Finance ✓Forensics and Litigation Support ✓Bookkeeping and Cloud Accounting ✓Enterprise Risk ✓Valuations ✓Insolvency ✓Family Office ✓Digital Services ✓Tax Services ✓Consulting

"MNP LLP Thunder Bay team has specialized experience in accounting, consultancy, tax, and various advisory services to help companies succeed. Rob Mozzon, FCPA, FCA, CFP, is the Regional Managing Partner. He delivers proactive, tailored business services to help his clients meet their compliance and reporting requirements while planning for the future and minimizing organizational risks. The team advises organizations on complex accounting transactions, transitioning to different financial reporting standards, and opportunities to streamline processes and systems. Their comprehensive and independent audit is tailored to enhance the credibility and reliability of your financial statements. They proudly represent and respond to their clients' needs in the public, private, and non-profit sectors. Their nine partners and over 50 professionals provide a wide range of professional services, from corporate finance to tax, accounting, consulting, risk management, and more.

2026 Highlights: Rob Mozzon has 25 years of experience. he serves clients with year-end financial reporting, tax planning, tax fillings, succession planning, management reporting and corporate restructuring."

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License #210637856

Contact:

(807) 623-2141 (866) 623-2141

Mon-Fri: 8:30am - 5pm
Sat & Sun: Closed

TBR® Inspection Report:

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