E-banking system has become an important practice among commercial banks in Nigeria. The introduction of this electronic banking has improve banking efficiency in rendering services to customer, This Study aim at the impact of electronic banking on performance in banking sector. Through the cluster sampling technique, data was collected by means of questionnaires from 80 Zenith Bank officers and the result shows that Zenith Bank electronic banking guidelines are in line with the CBN electronic banking guideline. The bank has an effective electronic banking system which has improve its customer’s relationship and satisfaction. To this end, It is recommended that the bank information technology training programme should be encourage among the staff of Zenith Bank, necessary legal codes banking should be established in order to enhanced growth of the industry.