Former NITI Aayog vice-chairman Rajiv Kumar has cautioned that even a modest fee on UPI merchant payments could undermine one of India's most important digital public infrastructure successes, arguing that the government should keep the system free for merchants for a few more years to preserve adoption gains.
The warning comes at a sensitive moment for India's payments ecosystem. The government has announced a 0.4% merchant discount rate, or MDR, on UPI merchant transactions above Rs 2,000, effective October 15, while continuing to exempt consumer-side payments from charges. The move is intended to create a more sustainable commercial framework for the rapidly expanding payments network, but it has also revived a long-running debate over who should bear the cost of digital transactions.
Cash Rebound Risk
Kumar's central argument is that UPI's scale has been built on convenience, trust and zero-cost usage, and that introducing merchant fees too early could reverse behavioural gains among small businesses and consumers. In his view, the danger is not merely that merchants may resist the charge, but that the broader ecosystem could begin to favour cash again in low-value transactions where margins are thin and price sensitivity is high.
That concern is especially relevant for India's retail economy, where millions of small merchants have adopted UPI because it is simple, fast and largely frictionless. For many of them, even a small MDR can be seen as an added operating cost in an environment where cash remains familiar and immediate. Analysts have long noted that digital payment systems in emerging markets often need sustained incentives before they become deeply embedded in everyday commerce.
Kumar's comments also reflect a policy tension at the heart of India's digital payments strategy: whether UPI should remain a public utility-like service funded through state support, or gradually evolve into a fee-bearing commercial rail. The government has so far treated UPI as a strategic national platform, prioritising inclusion and scale over direct monetisation. But as transaction volumes rise, the question of long-term funding has become harder to avoid.
Policy Trade-Offs Deepen
The new MDR structure appears designed to target merchant payments rather than consumer transfers, signalling that policymakers want to protect person-to-person usage while exploring a revenue mechanism for business transactions. Yet the distinction may not fully address the concern that any charge, however limited, could alter merchant behaviour at the margins. Small traders often pass on costs, absorb them, or shift payment preferences depending on customer demand and competitive pressure.
For the government, the challenge is to balance sustainability with adoption. UPI has become a flagship of India's digital economy, helping formalise payments, improve transparency and reduce dependence on cash. Any policy that slows that momentum could have wider implications for financial inclusion, tax compliance and the broader push toward a less-cash economy.
Kumar's intervention is likely to resonate with stakeholders who believe UPI's public value still outweighs the need for immediate cost recovery. It also raises a practical question: whether the state should continue subsidising digital payments until merchant acceptance is so entrenched that a fee would no longer threaten usage patterns.
What Happens Next
The coming weeks will test how merchants, payment companies and consumers respond to the October 15 implementation date. If the charge is perceived as small and manageable, adoption may continue with limited disruption. But if merchants begin to prefer cash for certain transactions, the policy could complicate one of India's most visible digital success stories.
For now, Kumar's warning serves as a reminder that payment systems are not only technical infrastructure but also behavioural ecosystems. India's UPI revolution was built on removing friction. The risk, he suggests, is that adding even a little friction could make cash attractive again.