Purpose: The article presents issues related to the development of electronic commerce market caused by changes in the supply chain in the face of the COVID-19 pandemic. Design/Methodology/Approach: The study used world-bank reports from statista portal. Findings: The aim of the article is to present the impact of electronic commerce market in the supply chain. The functioning types of e-business and basic business models used in e-commerce are also presented. Payment methods used in internet sales in Poland are shown. An analysis of the online payment methods preferred by consumers during the COVID-19 pandemic was also performed. Practical Implications: In the wake of the COVID-19 pandemic, retailers must develop increasingly efficient, faster, and more convenient delivery methods. For example, in the last year the number of users selecting same-day delivery in online search options has increased significantly. Originality/value: The publication presents the results of research conducted on the basis statista international portal and central statistical office in Poland

Katarzyna Witczynska (2020). The Impact of the Electronic Commerce Market in the Supply Chain during COVID-19 Pandemic in Poland, European Research Studies Journal Volume XXIII Special Issue 2, 648-658