Case Law

Plain meaning

Law developed through court decisions that interpret statutes, apply legal principles, and decide disputes.

Also called

Key points

• Case Law helps explain how legal authority is created, interpreted, challenged, or applied.
• Tax results often depend on both statutory wording and how courts or administrative bodies interpret that wording.
• The level of authority matters: a statute, regulation, appellate decision, trial decision, and administrative guidance do not all carry the same weight.
• For readers, the concept helps separate a binding legal rule from a factual result, policy proposal, administrative position, or litigation step.

Why it comes up

Tax case law helps explain how courts apply the Income Tax Act, Excise Tax Act, procedural rules, and administrative-law principles.