The transition to market economy in Romania and the Republic of Moldova conditioned their opening to the international market, the most widespread form of economic activity being electronic commerce regarding sales and payments on the domestic market and in other countries. Cross-border relations constitute an area of activity practicing the commercial exchange between countries with products and services, technical-scientific, investment, financial, informational products and international labor movement. The application of modern payment methods favors the development of economic relations between countries, regions. It is important that the level of the infrastructure endowment ensures on both sides of the borders the use of payment instruments. The purpose of the investigations to investigate the experience of cross-border transactions through the innovative elements practiced at the present stage. It is necessary to study the laws of this phenomenon in order to create the best regime for the regulation of cross-border transactions in private international law, including the regulation of contradictions between laws, which applies when the parties have not exercised the right to choose the law applicable to cross-border transactions. The research results are optimistic, highlighting the increase in the frequency and volume of transactions.