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McCay Duff LLP Headquarters Office in Ottawa, ON

McCay Duff LLP of Ottawa, ON

Client Rating

4.8 for this location based on 899 ratings by clients

5 stars
774 people rated them 5 stars
4 stars
108 people rated them 4 stars
3 stars
11 people rated them 3 stars
2 stars
2 people rated them 2 stars
1 star
4 people rated them 1 stars

McCay Duff LLP of Ottawa, ON has earned the 2021 Best of Accounting award for providing remarkable service to their clients! McCay Duff LLP has 899 verified ratings from their clients earning them 4.8 out of 5 stars!

Within the Accounting industry McCay Duff LLP specializes in: Audit / Assurance, Business Tax, Personal Tax

Additional Specialties:

  • Audit / Assurance
  • Business Tax
  • Personal Tax

Get in Touch

McCay Duff LLP

141 Laurier Avenue West Sixth Floor

Ottawa, ON K1P 5J3


We've been using the services of McCay Duff for many years to conduct annual audit of financial statement of our organization pension plan. There were times we needed to have auditing done within very tight timelines, and McCay Duff has always been accommodating and completing full and proper audit on time. The auditors are very professional and pleasure to work with.

A Client on December 2, 2020

Excellent and professional service from Karen Freake and April Wheeler.

A Client on December 1, 2020

Dianna Larkin and her colleagues are always available and always provide the correct advice. Bravo to her and her team.

Patrick M. on November 29, 2020

I have been a client of McCay Duff since 1969 and have been served by four different accountants starting with Mr. Duff. I have never been unhappy with the service I have received in the 52 years I have been associated with McCay Duff.

A Client on November 26, 2020

Have dealt with the firm in the past and have always found them to be professional, approachable and responsive to my needs.

Hal M. on November 26, 2020

McCay Duff has been providing my family with their tax preparation services for more than a decade. They are always friendly, knowledgeable, and highly professional. Keep up the good work.

Gezim H. on November 26, 2020

I have worked with McCay Duff for 14 years and they have always delivered professional and exceptional service.

Christine R. on November 26, 2020

Our tax accountant, Greg Kauffield, provides excellent service and advice. He is knowledgeable, meticulous with the details and a pleasure to work with.

Robert W. on November 26, 2020

We have been dealing with McCay Duff since 1967 and we have always found your services to be most efficient. Thank you, Bill & Fern Sample

William S. on November 26, 2020

Service is personal, professional and on time and very friendly

Kevin M. on November 25, 2020

McCay Duff LLP of Ottawa, ON Q & A

How do clients rate McCay Duff LLP?

899 verified McCay Duff LLP clients have reviewed McCay Duff LLP and rated them 4.8 out of 5 stars. You can see all the client ratings on their profile.

What kind of company is McCay Duff LLP?

This accounting firm specializes in: Audit / Assurance, Business Tax, and Personal Tax.

About McCay Duff LLP

McCay Duff LLP is in the Accounting industry with company headquarters in Ottawa, ON.

Company Awards

McCay Duff LLP earned 2021 Best of Accounting Client for providing superior service in the Accounting industry

2021 Best of Accounting Client

McCay Duff LLP earned these Best of Accounting Awards


2021 Best of Accounting Client

2021 Best of Accounting Client

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