India's Standing Committee on Finance has reignited the debate over UPI's long-term financial sustainability with a report presented to Parliament on March 12 recommending the reintroduction of merchant discount rates for large merchants processing payments through the Unified Payments Interface. The recommendation directly challenges the zero-MDR regime that the Indian government has maintained since December 2019, a policy widely credited with driving UPI's extraordinary adoption to over 20 billion monthly transactions.
The committee's core argument centers on fiscal burden. Since abolishing MDR on UPI and RuPay transactions, the government has allocated approximately Rs 2,000 crore annually to compensate banks and payment service providers for the revenue they forgo on processing merchant payments. The FY2026-27 Union Budget maintained this subsidy at the same level, and the committee questioned whether the UPI ecosystem should remain indefinitely dependent on government support rather than developing its own revenue mechanism.
Rather than proposing a blanket return to merchant fees, the committee recommended a tiered structure. Under this model, street vendors and small businesses would remain exempt from MDR, preserving the zero-cost access that has driven adoption among India's millions of small merchants. Larger merchants and enterprises, which benefit significantly from reduced cash handling costs and faster settlement, would pay a fee calibrated to transaction value.
The response from the Ministry of Finance was swift and categorical. Officials dismissed speculation about imminent MDR charges as completely false, baseless, and misleading, reaffirming the government's commitment to keeping UPI free for users and merchants alike. This positions the executive branch in apparent tension with the legislative committee's recommendation, a dynamic that will likely play out over coming budget cycles.
The sustainability question is not academic. NPCI, which operates UPI, must continually invest in infrastructure capable of processing over 700 million transactions daily across more than 685 member banks. The zero-MDR regime means this infrastructure is effectively subsidized by government transfers rather than transaction economics. RBI Governor Sanjay Malhotra has acknowledged this tension, noting that someone has to pay for the system's operation while declining to specify whether that burden would shift to users.
Industry participants have staked out predictable positions. The Digital Payments Council of India has advocated for a 0.3 percent MDR on UPI transactions, arguing that sustainable revenue is essential for continued investment in payment infrastructure. Fintech companies, which have built their business models around UPI's zero-cost rails, are more cautious about any fee introduction that could slow adoption in price-sensitive segments.
The debate carries implications beyond India's borders. As NPCI International expands UPI acceptance to Japan, Malaysia, Qatar, and other markets, the economics of cross-border transaction processing add another layer of cost that must be absorbed somewhere in the value chain. International merchants and their acquirers typically expect fee-based economics, creating a structural mismatch with UPI's domestic zero-fee model.
For now, the status quo holds. The government's Rs 2,000 crore annual subsidy continues, UPI remains free for all participants, and the committee's recommendation joins a growing body of analysis suggesting that the current model requires evolution. Whether that evolution takes the form of tiered MDR, interchange-like mechanisms, or alternative revenue models such as UPI's credit line product remains the defining open question for India's digital payments infrastructure.