This study investigated the relationship of information quality on decision-making effectiveness among Palestinian bank managers. Previous studies reported on the importance of information quality on decision-making effectiveness in different fields of management. Organisational structure was reported to moderate information quality and decision-making effectiveness in different fields of management. However, the moderating effect of organisational structure on the relationship between information qualities on decision-making effectiveness had not been addressed in quality dimensions to decision making effectiveness in the banking sector of Palestine. This cross-sectional quantitative study examined the relationship between information quality and decision-making effectiveness as being moderated by organisational structure. A total of l46 surveyed managers were required to respond to 55 items that elicited the three variables. Information quality was represented by six dimensions, organisational structure by three dimensions, and decision making effectiveness by three dimensions. The data were analysed by SPSS and PLS-SEM. The findings showed the relevance and importance of information. The result revealed that four dimensions of information quality; namely, accuracy, completeness, relevancy and interpretability had a significant relationship with decision making effectiveness. Dimensions of organisational structure, namely centralization, significantly moderated the relationship between information quality and decision making effectiveness while complexity did not show a moderating effect. Overall, this study extends the understanding of the decision-making effectiveness. It contributes to building the model of the relationship between information quality and decision making effectiveness in the banking industry. These findings will benefit bank managers in Palestine to better understand the role of information quality and can utilise it towards developing sustainable banking services in Palestine.