This study aims to analyze the implementation of the Quick Response Code Indonesian Standard (QRIS) in transaction activities and financial recording among Micro, Small, and Medium Enterprises (MSMEs) operating within the campus canteens of Universitas 17 Agustus 1945 Samarinda. QRIS, as a digital payment instrument, is considered to have significant potential in enhancing financial efficiency and transparency, particularly in microeconomic settings within higher education environments. The research employs a qualitative approach using a case study method. Data were collected through observations, in-depth interviews, and documentation involving business operators at several campus canteens that have adopted QRIS. The findings reveal that QRIS functions not only as a non-cash payment tool but also as an integral part of the daily income recording practices of small business owners. The level of adaptation varies, with some relying on application notifications for income tracking, while others still maintain manual records as a backup. Despite existing challenges such as limited internet connectivity and uneven digital literacy, QRIS has facilitated a gradual shift in financial management patterns towards a more modern and accountable system. This study recommends strengthening digital literacy and providing technical support to optimize and expand the use of QRIS within campus environments.