India's digital payments revolution has been nothing short of miraculous. The Unified Payments Interface (UPI) has transformed the way Indians pay, making it almost absurdly routine and free. But now, the bill is coming due. The government is considering introducing fees for merchants on UPI transactions, potentially ending a decade-long experiment in free digital payments. This raises a host of questions and concerns, and it's time to explore them in depth.
The Rise of UPI
UPI's success is undeniable. According to official data, in July alone, there were 23.6 billion UPI transactions worth 29.87 trillion rupees ($313.5bn; £232.2bn). Fintech apps like PhonePe and Google Pay account for most UPI payments, and the system is now available in some form for payments in 11 countries outside India. But what makes UPI truly remarkable is its design. India created a common digital plumbing on which competing companies could operate, allowing Google Pay and PhonePe to fight fiercely for customers while still allowing their users to transact across the same network.
The Merchant Network
One of the less glamorous ingredients in the UPI story may now be the most important: merchants. A vegetable seller, taxi driver, or small shopkeeper does not need to buy a card terminal to accept UPI. A printed QR code will do. And because merchants have not had to pay MDR, there has been little financial reason to turn customers away. New research by economists Abhinav Motheram and Sharon Buteau suggests that this merchant network was not merely an effect of UPI's success. It helped drive it. Districts with stronger merchant networks tended to see higher UPI adoption.
The Proposal
The government is considering introducing fees for merchants on UPI transactions, targeting transactions above 2,000 rupees at larger merchants, leaving small businesses and low-value payments untouched. This could generate a sizeable new revenue stream for banks and payment companies while leaving the everyday smaller payment to the neighbourhood grocer effectively unchanged. But the economics become trickier the further down the merchant chain a fee travels. Motheram's research does not estimate precisely how sensitive merchants are to MDR, but it offers a warning against assuming that a small fee will have a small effect.
The Balancing Act
India faces a delicate balancing act. It wants to make UPI financially sustainable without disturbing the conditions that helped make it ubiquitous. Brazil's Pix, another hugely successful instant-payment system, is free for individuals but permits low-cost charges for businesses. Yet it is the world's fastest-growing real-time payment system, used by more than 140 million people and 14 million companies, with more than four billion transactions a month averaging about $88 each. The key question is not simply whether UPI should remain free for every merchant transaction, but whether the pricing structure protects the marginal merchants who are still being brought into the digital payments ecosystem.
The Real Test
The first phase was about creating the network. The second was about getting hundreds of millions of people and millions of merchants onto it. The third is now beginning: figuring out how to pay for the system without making it less useful. Economist Renuka Sane believes the right pricing structure could finally restore 'commercial sanity' to India's digital payment rails, allowing the market to price risk, fund critical infrastructure, and build a more resilient payments ecosystem. But the risk is subtler. If charging merchants makes some of them less enthusiastic about accepting UPI - or eventually discourages the smallest ones from joining - the network could begin to lose some of the frictionless quality that made it so successful.
