PCAOB Registered

Languages Spoken: French English

PSB Boisjoli LLP - Partnership of Chartered Professional Accountants, was created from the merger of PSB and Boisjoli Sabbag in 2008. These two well established firms joined forces becoming one of the leaders in the accounting sector in Quebec, with close to 130 people and 16 professional designations. Our team has the business knowledge, experience, and technical skills to offer innovative solutions that help our clients achieve success. Our Partners’ insight, sense of business, and open-mindedness have allowed PSB Boisjoli to develop and offer a wide array of specialized services to a broad range of industries. Though we distinguish ourselves in the Tax and Audit areas, the services we have developed over the last twelve years include Restructuring and Insolvency, Scientific Research and Experimental Development, Business Valuation, Litigation Support, and Human Resources Consulting.

Patrick Grosjean

A Message from Managing Partners Marc Elman and Patrick Grosjean

At PSB Boisjoli, we are committed to helping our valued clients achieve financial prosperity and realize their full potential. By focusing our efforts on understanding our clients’ unique needs and developing trusting relationships, we are able to build practical and innovative solutions. Our strengths lie in our broad range of professional expertise, our dynamic working environment and, most importantly, our people, who are proud to act as trusted business advisors. At PSB Boisjoli, we strive to exceed our clients’ expectations.

Contact Us

Languages Spoken: French and English

PSB Boisjoli LLP

3333 Graham Blvd, Suite 400, Montreal, QC H3R 3L5


+1 514 341 5511

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Primary Contact
Patrick Grosjean Photo

Patrick Grosjean

Managing Partner

Firm Locations

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Primary Location

3333 Graham Blvd, Suite 400, Montreal, QC H3R 3L5, Canada

Managing Partners: Patrick Grosjean, Marc Elman
+1 514 341 5511

People at PSB Boisjoli LLP

Patrick Grosjean Photo

Patrick Grosjean

Managing Partner

Marisa Rezzara Photo

Marisa Rezzara

Vice-President, HR, Administration & Operations

Raphael Barchichat Photo

Raphael Barchichat

Tax Partner, Canadian and International Tax

Frank Maselli Photo

Frank Maselli


Steven Moses Photo

Steven Moses

Tax Partner

David Savage Photo

David Savage


Diane St-Germain Photo

Diane St-Germain

Finance Director

Larry Brault Photo

Larry Brault

IT Director

Nina Heft Photo

Nina Heft

Principal US Tax

Thought Leadership by PSB Boisjoli LLP