Contracts play an important role during the period of time that the outsourcing relationship is in effect. If an organization decides to acquire software and services products, the contract is a fundamental mechanism to ensure that expectations are realized. This paper describes a contract evaluation tool for Software and Services Acquisition Organizations, to achieve this, a contract model and an evaluation method through the tool have been developed. This tool allows the acquirer to know the coverage level related to the clauses of a contract in order to selector reject it. Besides, a case study is presented