Impact of Digital Payments on Retail Consumers and Small Vendors: Quantitative Analysis and Small Vendor Insights

This study investigates the transformative impact of digital payment systems on both consumer spending behavior and small vendor operations within the Mumbai Metropolitan Region, India. Framed within the broader evolution of digital finance—from the early technological advancements of ARPANET to the proliferation of Unified Payments Interface (UPI)—the research examines how rapid technological changes, government initiatives, and policy interventions are reshaping a traditionally cash-based economy. Employing a cross-sectional survey design, the study collected primary data from 120 retail consumers and 50 small vendors using distinct questionnaires administered online and in person, respectively. The data was analyzed through descriptive statistics, correlations, chi-square, and factor analysis. Furthermore, predictive modeling using Random Forest and Gradient Boosting Machine techniques was implemented to classify consumer spending patterns based on indices derived from digital payment usage and digital competency. Key findings indicate that high digital payment adoption is significantly associated with increased impulse buying and altered spending behavior among consumers, while digital competency emerges as a pivotal factor driving this relationship. For small vendors, despite high digital transaction volumes, challenges such as inadequate technical support and steep learning curves hinder the conversion of digital adoption into tangible revenue growth and improved customer retention. The study concludes that enhancing digital literacy and infrastructure, coupled with targeted policy interventions, is essential for fostering a more inclusive and efficient digital payment ecosystem that can further drive economic formalization and financial inclusion.