A Revolution in Plain Sight
Launched in 2016, the Unified Payments Interface, or UPI, has fundamentally altered India's relationship with money. It became one of the world's largest real-time payment systems, processing over 18 billion transactions a month. This digital public infrastructure
allows for instant, interoperable, and secure transfers between bank accounts using just a mobile phone. The system's genius lies in its simplicity and accessibility, bringing millions into the formal financial system and fuelling the growth of e-commerce and the gig economy. Its adoption was turbocharged by a key policy decision: making it free for both consumers and merchants.
The Heart of the Debate: Zero-Cost Transactions
The core of the economic friction lies in the 'zero-MDR' policy. MDR, or Merchant Discount Rate, is a fee merchants typically pay to banks and payment service providers for processing digital transactions. In a bid to drive digital adoption, especially after the 2017 demonetisation, the government mandated a zero-MDR framework for UPI and RuPay debit card transactions, effective from January 1, 2020. This meant that a small shopkeeper could accept a digital payment without seeing any of it deducted as a fee, dramatically lowering the barrier to entry. While this spurred incredible growth, it also removed the primary revenue source for the companies that run the payment rails.
Who Bears the Cost of 'Free'?
While UPI is free for users and most merchants, it is not free to operate. The ecosystem of banks, payment service providers, and technology companies that maintain the servers, ensure cybersecurity, and develop new features incurs significant costs. Industry estimates place the annual operational cost of running the UPI network at around ₹20,000 crore. For years, these costs have been absorbed by the participants—banks that issue accounts and acquire merchants, and third-party apps like PhonePe and Google Pay—in the hope of future monetization. This has led to a situation where the most used service generates no direct income, forcing companies to look for other revenue streams like selling financial products or charging platform fees on other services.
The Government's Shifting Stance
To offset the lack of MDR, the government introduced an incentive scheme to partially compensate banks for promoting low-value digital transactions. However, these subsidies have been described as short-term bridge funding rather than a permanent solution. Industry bodies have consistently argued that relying on unpredictable government budgets is not a sustainable model for critical national infrastructure. The growing gap between the operational costs and the subsidies has pushed the ecosystem to lobby for a more reliable funding mechanism, leading to a major policy shift.
A Move Towards a Middle Path
In a significant development, a new framework is set to take effect from October 15, 2026. This introduces a nominal MDR of 0.4% on person-to-merchant (P2M) UPI transactions above a ₹2,000 threshold. Importantly, this charge will be borne by the merchant, not the consumer, and person-to-person transfers remain free. The vast majority of small transactions will remain unaffected, with the government estimating that over 95% of merchant payments will not attract any fee. Small merchants receiving up to ₹1 lakh per month will also be exempt. This tiered approach is an attempt to create a sustainable revenue stream to fund the system's maintenance and innovation, without penalizing small users and businesses who were central to its success.
