Because of its importance, the banking system is one of the most significant systems of countries and industries. It affects finance and economics and it is creating a path for using money as a business tool. Banking is a very complex system that supplies money. It includes managing credits, deposits and taking care of the payment transactions. At this current time, banking includes a branched system of diverse institutions which are a part of the framework of every country and it is one of the main indicators of the development of a country. This branched system is in fact a system where a central bank makes decisions and creates regulations in a partnership with the country, gives instructions to other banking institutions operating in that country. Troughout the time, banking has blossomed, but at the same time it has been exposed to certain changes. Mobile banking and e-banking is considered to be one of the most important steps in the banking system in modern times. From the system having begun in a way that rich individuals lended money to merchants who used that money to invest in their business to a system where you just make a few clicks on your smartphone to solve your banking problems signifies an enourmous technological advancement in the banking system. Banking is considered to be a service industry which revolves around creating trust and satisfied customers. One way they do this is by offering a number of services to satisfy the needs of every customer. E-banking and mobile banking are very important indicators that the banking system is following the needs of the market with regard to making their services faster and more available. E-banking and mobile-banking are one of business transactions in Zagrebačka banka d.d. Zagrebačka banka d.d. realized the importance of this kind of business and made the most of their potential to advance their service. Moreover, they have shown that they are keeping pace with trends and that they have adjusted to market demands. A lot of benefits, which are offered in e-bankng and mobile banking have modernized and improved services for both private and business clients.