Which one of the following best describes the term "Merchant Discount Rate" sometimes seen in news?

The correct answer is C. Merchant Discount Rate (MDR) is the fee a merchant pays to its acquiring bank (the bank whose PoS terminal or payment gateway the merchant uses) each time a customer pays by card. The bank deducts it from the merchant's settlement amount. Part of it goes to the issuing bank as interchange, and the rest is the acquirer's margin.

Why the others fail:

• A describes a merchant-side incentive from a bank. MDR flows the other way, from merchant to bank.
• B describes cashback or reward to the customer, which has nothing to do with MDR.
• D describes a government incentive. MDR is a charge levied by banks, not a government payout.

Mains angle: MDR is central to the debate on digital payments. High MDR discourages small merchants from accepting cards, so the government's push for cashless economy has repeatedly turned on how MDR is set and who bears its cost.

Fact update: since 1 January 2020, the government has bn bearing the MDR on debit card and UPI transactions, so these now carry zero MDR for merchants. Credit cards and transactions above the notified limits still attract MDR.

Trap: aspirants pick A or D because the word 'discount' sounds like a reward or subsidy. MDR is a charge on the merchant, not a benefit to it.