<ul data-eligibleForWebStory="true">PhonePe and Google Pay maintained dominance in the UPI ecosystem in May, as per NPCI data.PhonePe captured 50% of the UPI market with transactions worth Rs 12.56 lakh crore.Google Pay ranked second, handling over 6.7 billion transactions valuing Rs 8.85 lakh crore.Paytm secured the third spot with 1.27 billion UPI transactions worth Rs 1.38 lakh crore.Navi and super.money emerged as the fourth and fifth largest UPI apps after Paytm.PhonePe garners 95% of its revenue from digital payments, with UPI payments being a core component.UPI witnessed growth in May with 18.68 billion transactions totaling Rs 25.14 lakh crore.The proliferation of UPI has slowed down as the platform nears saturation.There were disruptions in UPI platform monetization plans due to uncertainties around MDR reinstatement.