This diploma thesis is focused on new trends in payment systems for digital content. In the introductory chapter are briefly described the current types of electronic payment systems. The next part of the thesis introduces a foreign research studies and compares their results with results of the questionnaire survey conducted within the frame of the thesis. The following chapters are devoted to Czech and foreign electronic payment systems, focusing on the sale of digital content, the general development of the Czech micropayment systems and comparison of functionalities of the payment systems in order to compose a summary of recommendations for selected individuals involved in the field of electronic commerce. Following parts of this thesis...