Unified Payments Interface

Unified Payments Interface (UPI) is a real-time payment system developed by the National Payments Corporation of India (NPCI) and launched in April 2016 (publicly in August 2016). It is built on top of IMPS (Immediate Payment Service) infrastructure and enables instant money transfers between bank accounts through a mobile application, 24 hours a day, 7 days a week, 365 days a year — including public holidays. Key design principles: Interoperability (any UPI app can transfer to any bank), simplicity (one ID — Virtual Payment Address/VPA like name@bank — replaces account number + IFSC), and openness (any bank or fintech can build a UPI app using the NPCI API). How UPI works: A user links their bank account to a UPI app → creates a VPA (e.g., user@oksbi) → can send/receive money using VPA, QR code, mobile number, or Aadhaar — without sharing actual bank account details. The settlement happens in real time via RBI's settlement infrastructure. Key milestones and innovations: - 2021: UPI crossed 4 billion monthly transactions - 2023: UPI crossed 10 billion monthly transactions - UPI 123Pay (2022): for feature phone users (IVR-based, without internet) - UPI Lite (2022): for offline small-value transactions using on-device wallet - UPI One World (2023): for foreign nationals/NRIs visiting India — prepaid wallet linked to UPI - UPI Credit Line: links pre-sanctioned credit limits to UPI for BNPL (Buy Now Pay Later) - International UPI: Active in 12+ countries as of April 2026 — Singapore (PayNow-UPI link), UAE, France, UK, Bhutan, Nepal, Mauritius, Sri Lanka, Cyprus, Qatar, Malaysia, Israel (added February 2026 during PM Modi's visit). NPCI International (NIPL) is targeting 20+ countries by FY2028-29 Governance: UPI is regulated by the Reserve Bank of India (RBI) and operated by NPCI (National Payments Corporation of India), a not-for-profit entity owned by a consortium of banks under RBI's guidance. Strategic significance: UPI is India's flagship Digital Public Infrastructure (DPI) success story — a foundational layer of India's digital economy. India accounts for over 40% of global real-time digital payment transactions. India is now exporting UPI to other countries as part of digital diplomacy and the Global DPI initiative at G20.

• 1 UPI: launched April 2016 (public August 2016) by NPCI — real-time, 24x7 interoperable mobile payments
• 2 Built on IMPS infrastructure; regulated by RBI; operated by NPCI (not-for-profit, bank consortium)
• 3 VPA (Virtual Payment Address): unique ID like user@bank — no need to share account number/IFSC
• 4 Scale: 10 billion+ monthly transactions (2023); India = 40%+ of global real-time digital payments
• 5 UPI 123Pay (2022): for feature phones — IVR-based, no smartphone/internet needed
• 6 UPI Lite (2022): offline small-value payments using on-device wallet
• 7 UPI One World (2023): for foreign nationals visiting India
• 8 International (as of April 2026): active in Singapore, UAE, France, UK, Bhutan, Nepal, Mauritius, Sri Lanka, Cyprus, Qatar, Malaysia, Israel (added Feb 2026); NPCI targeting 20+ countries by FY29

India's push to internationalise UPI — enabling Indian tourists to pay via UPI QR codes at shops in Singapore, Dubai, and Paris — exemplifies how a domestic DPI can become a foreign policy tool. At the G20 New Delhi Summit (2023), India championed the Global DPI Repository, with UPI as the centrepiece — offering the UPI model to developing nations for their digital transformation.