The Old Cost of Accepting Money
Before UPI’s dominance, the world of digital payments looked very different for Indian businesses. Cash was king, but it came with its own costs: security risks, handling hassles, and the constant need for exact change. For businesses wanting to accept
digital payments, the main option was card-swiping machines. This came with a significant cost known as the Merchant Discount Rate (MDR). MDR is a fee, typically a percentage of the transaction value, that a merchant pays to their bank for every debit or credit card payment they accept. These fees, ranging from 1.5% to 3.5% for cards, could eat directly into the thin profit margins of many small enterprises, making digital payment acceptance an expensive choice.
The Zero-MDR Revolution
Launched in 2016, UPI turned this model on its head. A key policy decision that supercharged its adoption was the introduction of a zero-MDR regime in 2020 for UPI and RuPay debit card transactions. This meant merchants, especially small businesses and micro-entrepreneurs, could accept digital payments without paying any transaction fees. This move was a game-changer. It removed a major financial barrier, encouraging millions of street vendors, kirana stores, and service providers to adopt QR code payments, dramatically expanding digital transactions into every corner of the country. This zero-cost model was a crucial factor in UPI's explosive growth, which saw annual transaction volumes surge from 1.78 crore in 2016-17 to over 24,000 crore in 2025-26.
A Shift in the Landscape
However, the era of universally free merchant transactions is evolving. To ensure the financial sustainability of the massive UPI infrastructure, a new framework is set to be introduced from October 15, 2026. Under this policy, a 0.4% MDR will be applied to specific person-to-merchant (P2M) transactions above ₹2,000. Person-to-person (P2P) transfers will remain free, and crucially, merchant payments up to the ₹2,000 threshold will also continue to be exempt from this charge. The government estimates that this change will not affect approximately 96% of all merchant transactions, preserving the zero-cost benefit for the vast majority of everyday purchases.
What This Means for Businesses
For a majority of small businesses, like a local grocery store or a tea stall where most transactions are small, the immediate impact will be minimal. However, for businesses that regularly handle payments above ₹2,000—such as electronics stores, travel agents, or furniture showrooms—this introduces a new operating cost. For instance, a ₹10,000 sale via UPI could incur a ₹40 fee for the merchant. While this may seem small for a single transaction, the cumulative cost can become significant for businesses with high volumes of larger-ticket sales. This has sparked a debate, with some business associations raising concerns about the impact on operating costs and thin profit margins.
The Sustainability Question: Who Pays?
The introduction of a selective MDR addresses a long-standing question: who bears the cost of running the UPI ecosystem? Maintaining the vast infrastructure of servers, cybersecurity, and inter-bank networks requires significant investment. Until now, these costs have largely been borne by banks and payment service providers, supported by government incentives. The new framework is an attempt to create a more sustainable revenue model where high-value commercial transactions contribute to the upkeep of the system that makes free low-value payments possible. The revenue is intended to support investment in payment infrastructure, resilience, and innovation. The government has also barred merchants from passing this cost directly on to consumers, though concerns remain that it could be indirectly factored into prices over time.
Beyond Costs: A New Digital Foundation
The impact of UPI on businesses goes beyond just transaction costs. The widespread adoption has created a massive digital footprint, generating valuable data on sales trends and customer behaviour. This shift from cash to digital provides merchants with clear records of their transactions, which can improve bookkeeping and, more importantly, create a formal financial history. This digital trail is becoming increasingly crucial for small businesses to access formal credit and loans, an opportunity that was often out of reach in a cash-dominated economy. UPI, therefore, is not just a payment tool but a foundational layer for greater financial inclusion and economic formalisation for Indian businesses.
