One of the biggest changes brought about by the Internet and technological advances has been the creation of e-commerce, which has expanded the strategic options for millions of entrepreneurs, erased borders and even led to the emergence of purely digital businesses. Convenience and savings in time and money have led more and more consumers to opt for this method of shopping. However, as in traditional commerce, entrepreneurs have to deal with specific problems, such as cart abandonment. Cart abandonment without completing the checkout process has emerged as the main reason for lost revenue and can account for up to 70% of initiated transactions. For this reason, this research aims to know the state of the art on this subject, carrying out a systematic review of the literature to identify the main reasons for cart abandonment in e-commerce, as well as the possible gaps that may exist.