Mario Seyer, CPA, CA

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Indirect Tax
Corporate Transactions
Tax Dispute Resolution


Indirect Tax Consulting
Transactional Work
Audit Defense

Area of interest

Hockey, Biking, History


McGill University

Mario Seyer is the Tax Services leader in the Montréal office of PricewaterhouseCoopers LLP. He works in the firm’s Indirect Tax Services practice.

Mario serves clients in all industries on Federal GST, HST, PST, QST, retail sales tax, customs, sales and use tax, excise tax, fuel tax and other indirect tax matters. He also advises and assists clients with respect to planning, compliance, audit and other related issues.

Mario is a bilingual CA who graduated from McGill University in Montréal (1985).

Mario has spoken on indirect tax matters to professional and business groups/associations, including the Tax Executive Institute, the Association de planification fiscale et financière (apff), the CICA and l'Ordre des comptables agréés du Québec. He is also an indirect tax lecturer at McGill University’s taxation graduate program and in the apff's In-depth GST course.

He has written and reviewed comments published in CCH Canadian’s commodity tax products and writes for CCH's monthly newsletter.