The article examines the payment systems used in the world and in Ukraine, their features and components, existing varieties. It has been proven that payment systems based on electronic money include: payment systems based on smart cards; softwarebased payment systems operating on the Internet; payment systems based on mobile communication networks. The existing classifications of payment systems are given according to various characteristics: by the method of execution, by the type of operation, by the form of ownership, by the territory of operation, by the degree of residency of the participants, by the volume of payments made, etc. The article, based on its own long-term experience of working with various electronic payment systems, offers its own classification of payment systems by the scope of coverage: a) global payment systems; b) local (national) payment systems. The main global payment systems of the world and local payment systems of the United States, Canada, Great Britain, the countries of the European Union and Ukraine are indicated. A general scheme of the entire system of electronic payments has been built. The mechanism of making payments through LiqPay, WISE and PAYONEER payment services and the features of the functioning of these payment systems are described. The nuances of the acquiring payment transaction processing process, as well as the procedure for introducing an international bank account number (IBAN) in Ukraine, were traced and indicated. Facilitation of greater integration of the Ukrainian payment space with the European one due to savings on bank commissions and speed of operations was revealed. The dependence of the development of electronic commerce on the perfection, volume and convenience of payment systems is singled out.
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