The Zero-Fee Miracle
UPI's explosive growth was no accident. It was fuelled by a deliberate government policy to make it free. In January 2020, the government mandated a zero Merchant Discount Rate (MDR) for transactions via UPI and the domestic RuPay card network. An MDR is a fee
merchants pay to banks and payment providers for processing digital transactions. By removing this fee, the government eliminated a major barrier for small businesses and vendors, encouraging them to accept digital payments and rapidly expanding UPI's reach into every corner of the country. This made UPI a public good, much like a digital road or park, accessible to all without a direct cost. The result was the world's largest real-time payment system, fundamentally changing how Indians transact.
Who Actually Pays for Your 'Free' Transaction?
While you don't pay a fee to scan a QR code, the transaction isn't truly free. There are significant costs involved in running the massive infrastructure that processes billions of payments securely. These costs include technology upgrades, cybersecurity, fraud prevention, and system maintenance. Currently, these expenses are shouldered by the banks, the National Payments Corporation of India (NPCI), and the payment service providers like Google Pay and PhonePe that you use every day. For years, the government has provided financial incentives to these players to compensate for the zero-MDR policy, but industry experts and even the RBI have questioned if this subsidy-based model is sustainable in the long run as transaction volumes continue to soar.
The Argument for a Sustainable Model
The conversation around fees stems from a need for long-term sustainability. As RBI Governor Sanjay Malhotra noted, someone has to bear the cost of operating the payment infrastructure. Payment industry executives argue that a sustainable revenue model is essential to encourage continued investment in innovation, security, and expansion, especially into rural areas. In early August 2026, the government introduced the Taxation and Other Laws (Amendment) Bill, which amends the Payment and Settlement Systems Act. This legislation doesn't impose fees directly, but it creates a legal pathway for the government to introduce a selective, threshold-based MDR in the future, moving away from the rigid zero-fee mandate.
What Could a Fee Structure Look Like?
The government has been quick to clarify that users will not be charged for UPI payments, and person-to-person (P2P) transfers will remain free. Any potential fee would likely be an MDR paid by merchants, not customers. Discussions suggest a tiered approach. One model proposes a nominal MDR, perhaps 0.25% to 0.4%, only on transactions above a certain value, like ₹2,000, and only for larger merchants. This would keep the vast majority of everyday, low-value transactions, such as buying groceries or paying for a taxi, completely free for both customers and small vendors. The final decision on any fee structure would rest with an NPCI-led committee, only after the new bill is formally passed.
The Potential Ripple Effects
Introducing any fee, even a small, merchant-facing one, could have significant consequences. The primary concern is whether it could slow down the incredible pace of digital adoption. Small businesses operate on thin margins, and even a minor MDR could prompt some to encourage cash payments to avoid the charge. However, proponents argue that a structured, nominal fee on high-value transactions at large businesses is a necessary trade-off. It would create a revenue pool for the industry, estimated to be between ₹5,000 to ₹10,000 crore annually, which could fund the system's future growth and resilience without burdening the average user or small merchant. The challenge lies in striking the right balance between ensuring financial sustainability for the payment ecosystem and preserving the accessibility that made UPI a national success story.
