Trust is a widely studied phenomenon across disciplines. For example, researchers in a context of e-commerce have conducted several studies concerning consumer's trust in e-commerce. Despite of broad interest in consumer's trust-issues, there are only few, if any studies that concentrate on mechanisms how consumers form trust toward e-commerce. Current article contributes by conceptualising consumer's trust formation process in e-commerce. Altogether four mechanisms that consumers can use to evaluate the trustworthiness of e-commerce and form trust towards it are introduced. Also the role of different consumer characteristics in consumer's trust formation process is included in the model.