Couzin Taylor LLP



222 Bay St, 31st Fl, Ernst & Young Twr, Box 143
Toronto, ON, Canada, M5K 1H1
Phone: (416) 943-2600
Fax: (416) 943-2700
Practice Areas:
  • Tax Planning
  • Tax Controversy
  • Tax Litigation
  • International Trade
  • Customs & Excise

Couzin Taylor LLP is a national law firm of tax lawyers allied with Ernst & Young LLP in Canada. We are recognized as one of the top five tax boutiques in Canada and one of the top firms providing tax services in Canada. We provide tax planning, controversy and counsel services to a wide range of clients, including public and private companies, multinationals, banks, insurance companies, individuals, tax planners and tax transaction advisors.

Our team of professionals – in five locations across Canada – advises on the application of direct and indirect taxes to a broad range of transactions and structures, including domestic and cross-border acquisitions, divestitures, corporate reorganizations and financing transactions.

We have the knowledge, experience and national presence to help you with the risks and complexities of Canada's many tax laws.


Our tax controversy and counsel practice assists clients in disputes with federal and provincial tax authorities. We have an impressive record of efficiently resolving our clients' disputes with the tax authorities.

Our litigators have appeared before all levels of Canadian courts, including the Supreme Court of Canada, Federal Court of Appeal, Federal Court Trial Division, Tax Court of Canada and various provincial Superior and Appellate Courts.

We also assist with transfer pricing documentation, advance pricing agreements, competent authority requests, advance income tax rulings and voluntary disclosures, as well as with submissions to the Department of Finance Canada on proposed legislation.


We have experience in all areas of tax, including corporate tax, international tax, transaction tax, human capital, GST/HST and sales, customs and indirect tax. We have experience dealing with the general anti-avoidance rule, the foreign affiliate rules, transfer pricing, corporate reorganizations and scientific research and experimental development provisions.

Our experienced tax advisors and advocates can advise you on a broad range of tax matters, providing you with legal opinions and risk assessments regarding your transactions and tax positions, and making submissions to and negotiating settlements with the revenue authorities.

We can help you manage the pace and extent of inquiries of both the Audit and Appeals Branches of the CRA and the provincial tax authorities.


People make the difference in any professional services relationship. Our focused and integrated service approach is achieved by carefully selecting a team that brings in-depth industry, technical and subject matter proficiency relevant to your needs and business.

Our team combines highly qualified and experienced tax lawyers with the capacity to draw on the wealth of technical knowledge in both Couzin Taylor and EY. The firms are allied in Canada on a national basis to provide you with cost-efficient access to a wide range of resources.

A number of our lawyers are widely regarded as leading practitioners and authorities in various areas of tax law and tax litigation, and are frequently invited speakers with the International Fiscal Association, the Canadian Tax Foundation and the Association de planification fiscale et financière, among others. They are also prolific writers, who have been published in national and international journals and have been quoted on numerous occasions by the courts.


Through our alliance in Canada with Ernst & Young LLP, we augment our controversy resolution services with access to the insight of a number of former high-ranking individuals in the CRA and the Department of Finance — including the former Assistant Commissioner of Appeals for the CRA, the former director of CRA's International Tax Services Office and former senior members of Canada's Competent Authority Services team — as well as actuaries, economists, certified business valuators, scientists, engineers and industry-focused professionals.

And when your business needs go beyond borders, so do we. Our team can connect with the global network of EY tax professionals in 670 offices in 140 countries — to assist you with your cross-border controversy or planning issues wherever you're located or looking to expand.


99 Bank St, Suite 1200, Box 1505, Station B
Ottawa, ON, Canada, K1P 6B9
Phone: (613) 598-4800
Fax: (613) 598-4888


800 boul Rene-Levesque W, Bureau 1900, Terminal Twr
Montréal, QC, Canada, H3B 1X9
Phone: (514) 875-6060
Fax: (514) 871-8713


440 2nd Ave SW, Suite 1000, Ernst & Young Twr, Box 33
Calgary, AB, Canada, T2P 5E9
Phone: (403) 206-5326
Fax: (403) 206-5288


700 West Georgia St, Pacific Ctr, PO Box 10075
Vancouver, BC, Canada, V7Y 1B6
Phone: (604) 891-8400
Fax: (604) 891-8287