Evaluation of the effect of internal audit on the performance of branches of National Bank of Zahedan

The purpose of this study was to investigate the effect of internal audit on the performance of the Melli bank branches of Zahedan. The research method was descriptive correlational. The statistical population of this research includes all 322 employees in Zahedan City in 2017, that by using random sampling, 135 people were selected as the sample and internal audit inventory questionnaire and organizational performance questionnaire Hersey and Goldsmith were performed on them. This research is a causal and comparative study and the data collection tool is a questionnaire with closed-ended questions. The obtained data were analyzed using Pearson correlation coefficient of independent t-distribution and the research hypotheses were analyzed. Findings indicate that there is a positive and significant relationship between employee audit, employees' ability and personnel discipline, customer satisfaction, customer satisfaction, organizational behavior, and individual development of employees. Improvement in internal accounting also improves organizational performance