<ul data-eligibleForWebStory="true">PhonePe and Google Pay accounted for about 85% of the UPI market share in May, continuing their duopoly.PhonePe registered 868.20 Cr transactions worth INR 12.56 Lakh Cr, seeing a 4.2% increase from April.Google Pay's UPI transactions rose 4% to 674.04 Cr in May from 648 Cr in April.Overall UPI transactions grew 4.4% to 18.68 Bn in May, reaching a new high, with a value of INR 25.14 Lakh Cr.Out of the total UPI transactions, app players recorded 18.38 Bn transactions.Paytm held onto the third spot with 125.75 Cr transactions worth INR 1.38 Lakh Cr.Navi followed with 38.6 Cr transactions valued at INR 21,350.35 Cr.Flipkart's super.money and CRED also participated in the UPI race.FamApp By Trio remained the eighth largest UPI player with 11.03 Cr transactions in May.The debate on MDR for UPI payments continues, with concerns on financial sustainability and promoting digital payments.PCI is pushing for the introduction of MDR on UPI transactions above INR 2,000.There are reports suggesting potential MDR implementation on UPI transactions above INR 3,000.The finance ministry dismissed the reports on MDR implementation as speculative and baseless.Paytm's founder mentioned that MDR could increase revenue but also intensify competition in the fintech sector.