Executory contract
（重定向自Installment contract）
An executory contract is a contract that has not yet been fully performed, that is to say, fully executed. Put another way, it's a contract under which both sides still have important performance remaining. However, an obligation to pay money, although such obligation is material, does not usually make a contract executory. An obligation is material if a breach of contract would result from the failure to satisfy the obligation. A contract that has been fully performed by one party but not by the other party is classified as an executory contract.