UPI at 10: The World's Biggest Payment Network Isn't a Company

Click here to watch a video of this episode.
UPI cleared 373 transactions in its first month in 2016. In July 2026 it cleared 23.66 billion in a single month, worth close to 30 lakh crore rupees. Ten years on, the most consequential payments network of the decade turns out not to be a company at all.

On 25 August 2016 the Unified Payments Interface went live in Indian app stores, four months after a Mumbai pilot with 21 banks. The architecture was deliberate: a regulator, a non-profit switch, volunteer architects who insisted the centre stay dumb, and private apps free to fight each other on top. The twist is what that fight produced. Google Pay held 62% of UPI volume in 2018 and has since fallen to around 35%, beaten not by a better product but by a field army of QR stands and soundboxes.

Aman Narain and Zubin Vandrevala break down how UPI went from 373 transactions to 241 billion a year, why the app that won the ground war now carries the largest regulatory overhang in consumer fintech, and who actually pays for a payment rail that charges merchants nothing. Both were inside Google Pay during the Tez years, so this is an operator's account rather than an anniversary brochure.

Key takeaways:
1. UPI cleared 241 billion transactions in FY26 against roughly two crore in FY17, a twelve-thousand-fold increase in ten years.
2. Google built the better app and PhonePe built the better army; on open rails the army took the crown.
3. NPCI's 30% per-app cap, mandated in 2020 and deferred ever since, makes Google Pay's decline and PhonePe's success the same regulatory problem seen from opposite ends.
4. India chose a free rail funded by public subsidy; Brazil chose a priced rail at 22 to 23 basis points that funds its own servers.
5. UPI carries 85% of India's retail digital payments and 49% of global real-time volume, on infrastructure no company owns.

Topics covered:
- The India Stack: Aadhaar, payments, data, and the KYC cost that fell from about twenty-three dollars to ten cents
- Why abstracting real time, not inventing it, was UPI's actual innovation
- Three fights nobody remembers: USSD against IP, banks against third-party apps, SMS OTPs against device binding
- How the baton survived a change of government, from the UPA to the NDA
- Demonetisation as fire starter rather than cause
- Inside Tez: scratch cards, ultrasonic pairing, and a multinational betting on rails it did not own
- PhonePe's ground war, and why the last metre in India is physical
- The 30% cap, the sovereignty subtext, and the crown that eats
- Seven hundred million QR codes in a country that never installed nine million card terminals
- Brazil's Pix: the tidier system, and what India's messier bet bought instead

Referenced in this episode: UPI pilot, Mumbai, 11 April 2016; public launch 25 August 2016; NPCI incorporated December 2008; IMPS, November 2010; iSPIRT, February 2013; demonetisation, November 2016; PhonePe founded December 2015; RBI action on Paytm Payments Bank, January 2024; NPCI's 30% per-app volume cap; zero MDR since 2020; NPCI International and the acceptance corridors; BIS Project Nexus; Brazil's Pix, November 2020; World Bank on Indian financial inclusion; the 1930 cybercrime helpline.

Related episodes: S2E10 on Mastercard and BVNK; S2E20 on the PayPal board fight; The Stablecoin Endgame Nobody's Talking About.

Hosted by:
Creators & Guests

• Aman Narain - Host
• Zubin Vandrevala - Host

Aman Narain writes at amanwhoblogs.substack.com. Zubin Vandrevala is your payments provocateur, filing from a city that still posts cheques.

Enjoying A2Z Fintech? Leave a rating and review on Apple Podcasts. It is the single biggest signal to the Apple algorithm and how new listeners in our world find us.

For information and entertainment only. Not financial advice.

Chapters:
Transcript:
Click here to view the episode transcript.