As UPI transaction charges are set to change, India maintains its strict MDR caps for debit cards, highlighting the complex fee landscape for merchants amid varied regulations and industry practices.
Debit card merchant discount rate, or MDR, is the fee a business pays for taking a debit card payment, and it is usually taken out before the money is settled. In India, the regulatory position still depends on the card type, the merchant’s turnover and the payment channel used. For most non-RuPay debit cards, the Reserve Bank of India caps MDR at 0.40% for smaller merchants with turnover up to ₹20 lakh in the previous financial year, subject to a ₹200 ceiling per transaction, and at 0.90% for other merchants, subject to a ₹1,000 cap. RuPay debit cards sit inside a statutory zero-MDR framework. According to industry guidance, merchants should not rely on labels alone, because the commercial agreement and settlement report often matter more than the terminology used on a fee schedule. The latest UPI-related changes do not alter those debit card rules.
The distinction between MDR, TDR and interchange is one reason settlement statements can be difficult to read. MDR refers to the merchant-side acceptance charge, TDR is often used in market language for the total transaction-linked fee, and interchange is usually an internal card-network cost rather than a separate bill line for the merchant. Cashfree’s guide says payment gateway or platform charges should be checked separately from the regulated card fee, because a quoted price may include checkout tools, reporting or other services in addition to the underlying payment cost.
A debit card payment usually involves the issuing bank, the card network, the acquiring bank and the payment gateway or aggregator. The issuing bank authorises the card, the network carries the transaction, the acquirer enables acceptance, and the gateway supplies the checkout and reporting layer. The precise split of fees depends on the card programme and the provider’s contract, so merchants are better served by reviewing invoices and transaction reports than by assuming a standard percentage division across the industry.
GST is generally charged on the processing fee, not on the customer’s full purchase amount. Cashfree’s example shows that a ₹90 MDR on a ₹10,000 sale would attract ₹16.20 in GST at 18%, taking the total deduction to ₹106.20 before any other adjustments. For businesses that are registered for GST, input tax credit may be available if the legal conditions are met and the invoice is properly recorded, although that is a tax issue merchants should confirm separately with their advisers.
Recent policy attention has centred on UPI, but the debit card framework remains distinct. A finance ministry notification reported on in mid-September 2026 said banks and payment system providers cannot impose charges on RuPay debit card payments and UPI transactions up to ₹2,000, while the proposed UPI merchant charging structure due to take effect on 15 October 2026 covers different transaction bands and merchant categories. That means finance teams should not assume that any change to UPI pricing automatically flows through to debit cards. Industry reporting has also noted that RuPay debit cards continue to enjoy zero MDR, whereas RuPay credit cards used through UPI are treated differently and may attract merchant charges depending on the merchant category code and acquiring arrangement.
For merchants, the practical task is not just checking the headline rate but reviewing the full cost of acceptance. Cashfree’s guidance recommends confirming the merchant category, card type, GST treatment, settlement timing and any separate platform or value-added service fee, then reconciling those figures against the actual amount credited. That broader review matters because a cheaper card route can still be poor value if authorisation rates are weak, refunds are costly or reconciliation takes too much manual effort. In other words, the real test is whether the payment succeeds at an acceptable cost and whether the deduction matches the applicable ceiling and the signed contract.
Disclaimer: This article is intended to inform and educate, not to recommend or endorse any financial product, investment or strategy. Please consider your own financial circumstances and seek professional advice where appropriate before making financial decisions.
