In the age of digitalization, technology and information are developing rapidly, and the internet network is widespread, allowing individuals to do numerous transactions online. Electronic commerce, or e- commerce, is facilitated by many businesses. Nowadays people rarely want to bring cash and want payment method to be as simple as possible, with that a lot of people especially Generation Z choose using paylater as their payment method. This study aims to determines the effect of perceived ease of use, perceived security, and perceived usefulness of paylater on purchase decision at GoFood. Also, to determine the effect of purchase decision of Paylater on continuance intention at GoFood. The research method used on this study is quantitative research and the data collection techniques was carried out by surveying 200 respondent through questionnaire which are Gopay users live in Jakarta that are Generation Z and have made transaction at least once a month using Gopaylater. We use structural equation modelling (SEM) and SmartPLS for analyzing our data. The result of this study indicate that perceived ease of use and perceived security have significant positive effect on purchase decision. And, also purchase decision has a positive significant effect on continuance intention. But perceived usefulness do not have significant effect on purchase decision.