India built the world’s biggest digital payments miracle. Now comes the bill BBCExplainer: How UPI’s free ride may hit a speed bump The TribuneEven as government considers MDR charge on UPI, data shows cash usage quickening in economy The HinduUPI MDR benefits will depend on merchant mix, transaction value The New Indian ExpressUPI MDR debate: Why ₹2,000 is in focus and what it means for users business-standard.com