Digitisation: The story of how UPI transformed India’s digital payments landscape

India’s Unified Payments Interface (UPI) had more than 55 crore users, the Centre said in July. The platform processed more than 80 crore transactions a day, according to National Payments Corporation of India (NPCI) data for October 2026.

A book chronicling the decades-long journey that culminated in the creation of UPI was launched in Calcutta on Saturday.