Fintech Brief — September 17, 2026 The UPI MDR Meets Its First Legal Challenge One day after NPCI’s rate card landed, the framework is in court. Advocate Anjan Datta has filed a public interest litigation in the Supreme Court seeking to quash the September 14-15 gazette notifications behind the 0.4% MDR on UPI merchant payments above ₹2,000, naming the Union government, RBI, NPCI and the UPI & Services Steering Committee as respondents (Business Standard). The petition challenges the amended payment law itself, the differing treatment of UPI and RuPay debit-card transactions, and — the ground that should concern every payment app — argues the charges will ultimately reach the common citizen despite assurances otherwise. The framework it targets: 0.4% on P2M transactions above ₹2,000 capped at ₹300, a flat ₹5 for railways, telecom, insurance, fuel and agricultural inputs, and 0.02% capped at ₹300 for capital-market transactions, per the petition’s own recital of the rates. Meanwhile the fine print kept arriving: NPCI’s FAQ confirms small merchants in the P2PM category receiving up to ₹1 lakh a month via UPI QR stay at zero MDR even on a single payment above ₹2,000. Markets read the opportunity, not the litigation: Paytm touched a 52-week high on Tuesday before paring gains Wednesday, while Mobikwik slipped into the red; JM Financial estimates ₹210 crore of incremental FY27 revenue for Paytm and raised its target price to ₹2,150, while flagging that how the MDR pool is split across the value chain remains undecided — which is precisely where the consumer-protection question lives. Politics has followed: the BJP defended the charge, NCP(SP) attacked it, and NITI Aayog’s Vice-Chairman argued businesses must be self-sustainable. Watch the pass-through, not the petition: whether a ₹25,000 purchase quietly carries ₹100 of MDR inside the price is the test of the “consumers pay nothing” promise.
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