SummaryThe article is devoted to identifying external and internal factors that shape inter-organizational trust in e-commerce. Studying how trust between e-commerce partners is built, four key B2B trust spheres were analyzed based on literature. After analyzing thirteen research reports, the factors shaping B2B trust are presented due to their frequency of occurrence in the reports. Research has shown that among the many factors determining B2B trust, the greatest value in interactions between e-commerce partners lies in the factors, i.e.: „common values”, „communication”, „experience and qualifications”.