What are the core elements required for a valid contract under common law?

Study for the MBE Critical Pass Test. Enhance your knowledge with flashcards and multiple choice questions. Prepare thoroughly for your exam with detailed hints and explanations.

The essential idea is that a valid contract at common law needs three pillars: mutual agreement, consideration, and a lawful purpose. Mutual assent means there is a clear offer and a corresponding acceptance that matches the terms; without that, the parties haven’t truly agreed. Consideration is the exchange of value—the promise or performance that each side gives or undertakes—so simply promising to pay isn’t enough on its own without something of value being exchanged or promised in return. A lawful purpose means the contract’s object and terms must be legal and not against public policy. Beyond those, capacity and legality matter: the parties must have the legal ability to contract (for example, adults of sound mind, not minors lacking certain rights, etc.), and the contract’s subject matter must be legal. Notarization isn’t required for validity, and many contracts are enforceable even if oral, except in cases where the law requires writing (statute of frauds) or other formalities.