Unified Payments Interface (UPI)

UPI (Unified Payments Interface) is an Indian instant payment system developed by the National Payments Corporation of India (NPCI) that enables real-time bank-to-bank transfers via a mobile app, operating 24 hours a day, 7 days a week. Users create a UPI ID (like name@oksbi) or scan a QR code to send or receive money without sharing bank account details. UPI supports linking multiple bank accounts and is widely used for merchant payments, bill payments, and peer-to-peer transfers. When a credit card is linked to a UPI app for payment, the transaction is processed as a regular payment — not a cash advance — on most cards, meaning standard purchase terms and reward rates apply. Some issuers may treat UPI credit card loads as cash advances, so check your card’s terms of use.