The Zero-Fee Miracle That Conquered India
Launched in 2016, UPI was designed as a public good, an digital infrastructure to bring hundreds of millions of Indians into the formal economy. Its core promise was simple: no charges for users sending money to friends and family (peer-to-peer or P2P)
and, crucially, a zero Merchant Discount Rate (MDR) for merchants accepting payments. MDR is the fee merchants typically pay for card transactions. By eliminating it for UPI, the government spurred unprecedented adoption. From street vendors to large showrooms, the simple QR code became ubiquitous, driving UPI to handle a staggering 23.6 billion transactions in July 2026 alone. This strategy worked brilliantly to digitise the economy, but it left a multi-billion rupee question unanswered: who pays to keep the lights on?
The Hidden Costs of a Free Service
While UPI transactions appear free to the user and merchant, they are not cost-free to operate. Behind every instant payment is a complex network of banks, payment service providers (PSPs) like PhonePe and Google Pay, and the National Payments Corporation of India (NPCI), which built and manages the system. These entities incur significant costs for servers, cybersecurity, fraud detection, and transaction processing. Industry estimates suggest each UPI transaction costs the ecosystem around ₹2 to process. With transaction volumes soaring into the billions each month, these costs accumulate into a substantial financial burden. For years, these costs have been absorbed by the banks and PSPs, partly offset by government subsidies, in the hope of monetising users later through other financial products like loans and insurance. However, as the scale grows, this model is showing signs of strain.
The Search for a Sustainable Model
To ensure the long-term health of the UPI ecosystem, a shift in its business model is now being seriously considered. The government has recently enabled changes to the Payment and Settlement Systems Act, allowing for charges to be introduced. However, there is a clear consensus that person-to-person transfers will remain free. The focus is on a nuanced approach to merchant payments. One of the first steps has been the introduction of an interchange fee of up to 1.1% on certain transactions over ₹2,000 made through prepaid instruments (PPIs) like digital wallets. This fee is paid by the merchant's bank to the wallet issuer, not by the customer directly. The broader proposal being considered involves introducing a small, threshold-based MDR on high-value transactions for larger merchants. The idea is to protect small vendors and individual users while asking larger businesses that benefit significantly from UPI to contribute to its upkeep.
What Could Change for Users and Merchants?
The government and the RBI have been clear: the average user will not be charged for their daily UPI payments. Any new fees would be structured to avoid impacting the vast majority of transactions. For small merchants, UPI is expected to remain a free payment acceptance tool. The changes are targeted at medium-to-large businesses and for specific transaction types. For example, a transaction over ₹2,000 paid from a wallet might attract a fee for the merchant, while the same payment made directly from a bank account would not. The challenge is a delicate balancing act. A 2024 survey indicated that many users would be discouraged if fees were introduced. Therefore, policymakers are proceeding cautiously, aiming to create a financially sustainable system without derailing the digital payment habit that has become so deeply ingrained in the Indian economy.
