Basics of Contract Law

CORE DEFINITION

Contract law is the body of doctrine that makes promises legally enforceable, requiring in the common law tradition an offer, acceptance, consideration and an intention to create legal relations, with lawful and sufficiently certain terms. Its core proposition is that enforceable commitments let strangers exchange value over time without relying on personal trust, shifting performance risk from reputation to institutions. The key qualification is that requirements differ across legal systems: consideration is a common law doctrine, while civil law jurisdictions typically rely on cause or the principle of good faith instead, so the same promise may be enforceable in one system and not another. Terms must also be certain enough for a court to identify the obligation.