Every enforceable contract in Canadian common law rests on three pillars: offer, acceptance, and consideration. While the first two concepts often feel intuitive to business owners, consideration operates as the silent gatekeeper that determines whether a promise becomes a legally binding obligation or remains merely a statement of intent. Understanding consideration is essential for anyone who makes or receives business promises, because without it, even the most sincere commitment carries no legal weight. Courts across Canada will not enforce a promise that lacks consideration, regardless of how much one party relied on that promise or how clearly it was expressed. This principle, deeply embedded in the common law tradition followed in British Columbia, Alberta, Saskatchewan, Manitoba, Ontario, and the Atlantic provinces, reflects a fundamental belief that the law should only enforce bargains, not gifts or gratuitous promises. Quebec, operating under the Civil Code of Quebec, approaches enforceability differently, as we will explore, but for the majority of Canadian business operators, consideration remains the crucial element that transforms words into obligations.
Consideration, in its simplest form, is something of value exchanged between parties to a contract. It represents the price paid for a promise. When you agree to pay a contractor five thousand dollars to renovate your office, your consideration is the money, and the contractor's consideration is the labour and materials they will provide. Each party gives something and receives something in return. This mutuality of exchange is what distinguishes a contract from a one-sided promise. If your neighbour simply promises to paint your fence next weekend without asking for anything in return, that promise, however genuine, cannot be enforced in court if your neighbour changes their mind. The promise lacks consideration because you have provided nothing in exchange for it. This might seem harsh, particularly when someone has relied on a promise, but the doctrine serves important purposes. It prevents courts from becoming arbiters of every casual commitment made in daily life, and it encourages parties to formalize their agreements when they intend them to be binding.