Nowadays, the increasing use of the Internet has resulted in an example in all areas, as well as in the business of small and medium-sized enterprises, due to the rapid use and improvement of customer satisfaction.Masters thesis presents the characteristics of online stores where the historical determinants of online business in the Republic of Croatia and the world have been published, and online commerce can be lacking and it can open the way of advertising on the internet. Mentions are surely safe in an online store, it paid and were essential to make an online store successful. Customer satisfaction is an important segment in the business of each company because a satisfied and loyal customer is essential for the successful business of the company. In this context, the relationship between customer satisfaction and value as well as the reasons for measuring customer satisfaction are explained. Mentioned are the approaches to measuring satisfaction, customer satisfaction theory and disclosure are the types of customer, the use of behaviors and methods used by businesses to attract customers to make purchases. Within the masters thesis was proven a survey of customer satisfaction with online commerce of small and medium-sized enterprises known in the Republic of Croatia, in the city of Zagreb and its surroundings. The internet today is a tool without which people cannot imagine life. As it is presents in almost all households, it is also presents in the business of all enterprises. The online survey that conducted the survey sought to find out what factors are important to customers when buying online in order to meet their expectations of the internet store and how this creates trust and loyalty on their part. It explored how often they visited websites, what they buy, what drove them to buy, how satisfied they are with their delivery speed, availability of customer service, various forms of payment, website security, and how satisfied they are with the price and quality of the products or services. Efforts have been made to find out whether customers trust online stores that own a physical store, whether they are satisfied with the products range, and whether they will ultimately rate their satisfaction with online shopping stores.