Now in its fifth edition, this work provides an overview of the foundations of tax law and the critical cases which have shaped each component of the tax regime, uniquely combining the best features of both a textbook and casebook. Offering more depth of analysis and scope of coverage than other income tax law casebooks, it contains the authors' analysis of the law, yet unlike other textbooks, it includes the text of judicial decisions, enabling readers to critically and effectively assess the law. Cited by the Supreme Court of Canada, this book's expert commentary, detailed explanatory notes and extensive case excerpts, will be of interest to tax lawyers, legal academics and law students.