Digital payment systems have revolutionised the monetary and business landscape in India, even for street vendors, who are an important stakeholder in the informal sector. The study intended to uncover the dominant factors that affect digital payment adoption, such as perceived ease of use, perceived usefulness, social influence, facilitating conditions and personal innovativeness. The present study used a descriptive and quantitative research design. The primary data were collected from 100 street vendors of Central Uttar Pradesh using an in-person structured questionnaire, which applied the purposive sampling technique. Descriptive statistics, Pearson correlation and regression analysis were used as statistical tools for data analysis using SPSS software. Results indicated that ease of use is the factor most important to the street vendors' adoption of digital payment. Despite the problems of low digital literacy and technical and infrastructural challenges, street vendors began to use digital payment systems as a result of the shifting preference habits of customers and the increasing of the digital economy. The study found that with easy-to-use digital platforms and awareness campaigns, the adoption of digital payments can continue to increase and support the sustainability and expansion of street vendors' businesses.