Banks in Palestine are an important source of businesses and organizations for financing and bank's managers have to make effective decisions. The literature indicates the important role of information quality to facilitate managers to make effective decisions. Information quality dimensions of accuracy, accessibility, relevancy, completeness, accuracy, and timeliness are the factors that determine whether the information received by managers meet the quality. In this paper we argue that the effective decision making effectiveness depends on the structure of the organization. A formalized organizational structure, for example, is likely to affect the information quality, and, hence, the decision-making process. In essence, this paper proposes the moderating effect of organizational structure on the link between information quality and decision making effectiveness.