For a contract to be considered legal, the purpose must be:

For a contract to be considered legal, its purpose must be legal. This means that the activities covered by the contract must comply with the law and not involve any actions that are prohibited. If a contract's purpose involves illegal activities, such as drug trafficking or fraud, it becomes void and unenforceable. Therefore, the legal nature of the contract's purpose is a foundational element that determines its validity in a court of law.

While ethical considerations, profitability, and clarity in definition can influence the effectiveness and desirability of a contract, they do not establish its legality. A contract could be ethically questionable or unprofitable, yet still have a legal purpose. Thus, the crucial determinant for the contract's enforceability is that its objective aligns with legal statutes and regulations.