NPCI UPI Complete Guide: Understanding India's Unified Payments Interface — From Architecture to Advanced Features
About this ebook
Key Topics Covered:
Foundations & The India Stack: Evolution from paper-based clearance to real-time gross settlement, IMPS rails, and the JAM trinity.
NPCI Core Infrastructure: Operational mandates behind retail clearing products including NFS, RuPay, AePS, NACH, NETC FASTag, and UPI.
4-Pillar Transaction Architecture: End-to-end messaging flow between Payer PSP, Remitter Bank, NPCI Central Switch, and Beneficiary Bank.
Onboarding & Authentication: Hardware-level device binding, SIM verification handshakes, VPA creation, and PIN setup mechanisms.
Merchant Integrations: QR standees, intent flows, zero-MDR economics, and IoT soundbox audio confirmations.
Security & Fraud Mitigation: Two-factor cryptographic architecture, defense against social engineering scams, remote screen-sharing risks, and 1930 emergency reporting.
Limits & Regulatory Mandates: Standard P2P thresholds, elevated limits for healthcare and education, 30% TPAP market cap rules, and RBI-mandated T+1 compensation frameworks.
Advanced Fintech Utilities: Offline PIN-less payments via UPI Lite, recurring subscriptions via UPI AutoPay, RuPay Credit on UPI, and global remittances via NIPL.
