UPI transactions reached an all-time high of 18.68 Bn in May, growing by 4.4% from April.Year-on-year, transactions increased by 33%, while the total transaction value for May was INR 25.14 Lakh Cr.PhonePe and Google Pay remain top UPI players, holding around 80% market share, with Paytm following at 7%.Industry advocates are pushing for reconsideration of zero MDR on UPI transactions, citing challenges in monetizing services.