Integrity, Results, Growth

A team of dedicated professionals providing businesses, not-for-profits, charities and individuals peace of mind by helping them understand their numbers, minimize their taxes and maximize their wealth.

Our Vision

McCay Duff LLP is an essential partner helping clients achieve their financial goals through expert tax, assurance and business advisory services.

Our Team

Our clients face a variety of business, financial and personal challenges and rely on McCay Duff LLP to provide the expert advice they need to meet those challenges. You can be confident that our team of trusted professionals will provide you with personalized advice and service to help you attain your business and financial goals.

Our Mission

Clients count on McCay Duff LLP to make a positive difference in their lives and businesses, providing personalized financial advice within a professional culture of mutual trust and commitment to excellence.

You know your business. We understand your numbers.

Regardless of your personal or business interests, we can give you the financial advice – and peace of mind – that you deserve.

Since 1990, the accountants at McCay Duff have been providing me with expert advice on everything from taxes to investing. In my opinion, their experience, knowledge and skills are second to none. They are professional in all their dealings and highly responsive to my questions and needs. It’s my pleasure to recommend them.

Dr. Alfred Sisto MD, FRCPC, Community Pediatrics, Children’s Hospital of Ottawa, Civic and QCH hospitals

I would highly recommend the accounting Firm of McCay Duff. I have been using the Firm’s services for almost 30 years and have always found the team to be responsive, professional and, as importantly, able to relieve the stress of having to deal in areas—notably taxes—that are beyond my areas of expertise. I truly appreciate the Firms' skills, knowledge and capabilities and often wonder where I would be without them.

Dr. Juan Bass MD, FRCSC Chief , Department of Surgery, Children’s Hospital of Eastern Ontario
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