The Constitution Act, 1867 established Canada as a federation, distributing legislative authority between the federal Parliament and the provincial legislatures in a manner intended to preserve both national unity and regional autonomy. This division of powers forms the constitutional backbone of Canadian governance and directly affects every business operating within or across provincial boundaries. For small and medium-sized business owners, sole proprietors, and non-profit operators, understanding which level of government has authority to regulate specific activities is not merely an academic exercise but a practical necessity that determines compliance obligations, licensing requirements, and the legal framework within which commercial disputes will be resolved.
The distribution of legislative powers appears primarily in sections 91 and 92 of the Constitution Act, 1867, though other provisions also allocate specific matters to one level of government or another. Section 91 enumerates the exclusive powers of the federal Parliament, including matters such as the regulation of trade and commerce, banking, bills of exchange and promissory notes, interest, bankruptcy and insolvency, patents, copyrights, marriage and divorce, criminal law, and the incorporation of banks. Section 92 sets out the exclusive powers of the provincial legislatures, which include direct taxation within the province for provincial purposes, the incorporation of companies with provincial objects, property and civil rights in the province, the administration of justice within the province, generally all matters of a merely local or private nature in the province, and the management and sale of public lands belonging to the province. These enumerated powers were drafted in the nineteenth century and have been interpreted and adapted through constitutional jurisprudence to address circumstances the drafters could not have anticipated, from aviation and telecommunications to environmental protection and the regulation of controlled substances.