Cashless Nation: How UPI Changed Everything is a book about how India’s Unified Payments Interface developed and reshaped digital payments. Finance Minister Nirmala Sitharaman released it at IITMAA Sangam in Bengaluru on 26 September 2026; IIT Madras then hosted a campus event celebrating its arrival on 5 October. The two events explain why coverage describes the book as launched at IIT Madras.
What happened at IIT Madras?
IIT Madras hosted an event on 5 October 2026 celebrating the arrival of Cashless Nation: How UPI Changed Everything. At the event, former Reserve Bank of India Governor C. Rangarajan called UPI “an envy of the world now, and open to everyone from a street vendor to a billionaire.” PTI also reported that Rangarajan described the book as a “brilliant narrative” of the events, policies and personalities behind UPI. ThePrint’s PTI report covered the campus event.
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Where and when was the book released?
The IIT Madras event was not the first documented release. The Ministry of Finance says Sitharaman released the book at IITMAA Sangam in Bengaluru on 26 September 2026. The ministry’s release records that earlier event. The later IIT Madras gathering celebrated the book’s arrival on campus; distinguishing the two dates avoids treating the Bengaluru release and campus event as one occasion.
What is Cashless Nation about?
Written by technologist and entrepreneur Santanu Paul and career banker B. Sambamurthy, the book follows UPI’s development and the institutional, technological and partnership work behind India’s digital-payments transformation. Penguin Random House India describes it as a narrative about UPI’s effects on payments and the relationships among citizens, markets and the state. The publisher’s book page provides its description and author biographies.
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The authors’ backgrounds
In its biographies, Penguin Random House India identifies Paul’s experience in technology and at NPCI, the organization that operates UPI, and Sambamurthy’s banking career and roles at IDRBT and NPCI. Those professional histories place the authors close to the technology and institutions discussed in the book.
Edition details and availability
Penguin Random House India lists an August 2026 hardback edition. Its listed maximum retail price is ₹899; retailer prices and stock can change, so check the seller’s current listing before ordering.
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| Detail | Publisher listing |
|---|---|
| Title | Cashless Nation: How UPI Changed Everything |
| Authors | Santanu Paul and B. Sambamurthy |
| Format and publication | Hardback, August 2026 |
| ISBN | 9789377300517 |
| Length | 336 pages |
| Maximum retail price | ₹899 |
The official book site identifies print and Kindle availability in India, the United States and the United Kingdom. Format, price and stock vary by retailer and location; confirm details on the listing for your market. The book’s official site links to purchase options.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How to read the book’s UPI figures
The book’s promotional site displays figures of more than 200 billion UPI transactions annually, more than 500 million citizens reached, more than 65 million merchants enabled, and over half of global digital payments attributed to India. The page does not identify the original statistical publisher or the year for these figures. Treat them as promotional claims displayed by the book’s site, not as independently verified current statistics.
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