Even everyday banks are promoting various employees training and development programs for their staffs, but still there is no certain or effective instrument to confirm how they influence to banks' performance. Therefore, this research planned to determine the relationship between training and development with banks performance and its comparison between training and development. The researcher distributed 250 questionnaires, but only 209 questionnaires were received from employees and been completed. The researcher used a quantitative research method to investigate the most of significance factor that affects banks performance, through measuring and comparing employee training and employee development at banks. The findings of multiple regression analysis revealed that the effect of employee training on banks performance is stronger than the effect of employee development on banks performance in Erbil.