A Critical Review of Unified Payment Interface (UPI) Usage and Its Impact on Retail Payment Sector and Buying Power of Consumer

The Unified Payment Interface (UPI) has emerged as a revolutionary digital payment system in India, fundamentally transforming the retail payment landscape since its launch in 2016. This study critically examines UPI adoption patterns, its impact on the retail payment sector, and its influence on consumer buying power through comprehensive data analysis from the National Payments Corporation of India (NPCI). Using descriptive analysis of transaction data from April 2016 to June 2025, this research reveals exponential growth in UPI usage, with monthly transactions increasing from zero in early 2016 to over 18.39 billion transactions worth ₹24.04 trillion in June 2025. The findings indicate that UPI has democratized digital payments, enhanced financial inclusion, reduced transaction costs, and significantly altered consumer purchasing behavior. The study concludes that UPI has created a paradigm shift in India’s payment ecosystem, fostering a cashless economy and empowering consumers with enhanced buying power through seamless, instant, and cost-effective payment mechanisms.