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Who We Are
Trusted Advisors. Proven Results.
GADT Tax Advisory is a professional accounting and tax advisory firm serving clients across Canada and the United States through secure cloud-based accounting and advisory solutions.
Our practice is built on a simple belief: every client deserves expert advice tailored to their unique situation. Whether you are filing a personal return, growing a business, navigating a CRA audit, or planning for the future — we bring the depth of knowledge and the personal attention that makes a real difference.
With decades of combined experience spanning Canadian and international accounting standards, our team is equipped to handle even the most complex financial matters with confidence and care.
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Leadership
Meet Our Partners
GADT Tax Advisory is led by two highly accomplished professionals whose combined expertise spans over four decades of accounting, tax, and financial advisory practice.
Amarjeet Deol
Partner & Senior Advisor
Amarjeet Deol is a Registered Professional Accountant (RPA) and a Chartered Accountant from India, bringing over 30 years of deep expertise in accounting, taxation, and financial advisory services.
His extensive background spans both Canadian and international accounting standards, giving him a uniquely broad perspective on complex financial matters. Amarjeet specializes in corporate tax planning, CRA audit representation, and strategic financial consulting for businesses at every stage of growth.
Clients value his meticulous attention to detail, his ability to simplify complex tax issues, and his unwavering commitment to achieving the best possible outcomes.
Mandeep Grewal
Partner & Tax Specialist
Mandeep Grewal is a Registered Professional Accountant (RPA) with over 10 years of focused experience in accounting and tax filing practice. He has built a strong reputation for delivering accurate, efficient, and client-friendly financial services.
Mandeep's expertise covers personal and small business tax returns, HST/GST filings, payroll processing, WSIB compliance, and bookkeeping. His hands-on approach and thorough knowledge of CRA requirements ensure clients are always compliant and well-positioned.
Known for his approachable style and clear communication, Mandeep makes even the most daunting tax situations feel manageable for his clients.
Our Commitment
What Sets Us Apart
Client-First Approach
Every decision we make is guided by what is best for you. We listen first, then advise.
Tailored Solutions
No two clients are alike. We craft strategies specific to your financial situation and goals.
Decades of Expertise
Over 40 combined years of professional experience across Canadian and international standards.
Proactive Planning
We don't just file returns — we plan ahead to minimize your tax burden year after year.
What We Offer
Ready to Work With Us?
Contact us today to schedule a consultation and discover how GADT Tax Advisory can help you achieve your financial goals.
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