Unavoidable technological advancements have resulted in new transaction solutions, one of which is the e-wallet. To avoid unnecessary expenses, the use of e-wallets should be accompanied by mental accounting knowledge. GoPay and ShopeePay are two popular e-wallets in Indonesia that will be examined in this study. Using prospect theory and the Technology Acceptance Model (TAM) as theoretical foundations, this study aims to determine the influence of three mental accounting characteristics, such as promotion, expenditure budgeting, and consumptive behavior, on the intention to use GoPay or ShopeePay. After distributing online questionnaires and collecting 291 responses, the data were tested using SmartPLS 3.2.9 software. According to the findings, promotion, expenditure budgeting, and consumptive behavior have a significant positive effect on the intention to use GoPay or ShopeePay. First, the greater the number of promotions offered, the greater the purchase intention through GoPay or ShopeePay. Second, people who budget their expenditure will frequently use GoPay or ShopeePay because they need to maintain their financial stability by using the provided features. Finally, consumptive behavior is motivated by social status or personal pleasure which increases the intention of using GoPay or ShopeePay because it is enjoyable.