What is MDR and why is it back in focus? | Banks earn no fees on UPI payments | Inshorts  InshortsMint Explainer | Why the UPI merchant fee debate is back in focus  livemint.comWill UPI Stay Free? Government Reviews MDR for Large Merchants  Telugu TimesCould UPI Payments Above Rs. 2,000 Soon Cost More?  BW BusinessworldBig businesses may soon have to pay for UPI: Report | UPI transaction volumes hit 242 billion in FY26 | Inshorts  Inshorts