UPI vs Debit Card vs Credit Card: What the New MDR Rules Really Mean for Your Payments

For years, UPI has become the default way millions of Indians pay at shops, restaurants, online stores and service providers. One of its biggest advantages has been its zero-cost structure for ordinary users and the absence of Merchant Discount Rate (MDR) on most transactions.

That is set to change for certain merchant payments from October 15, 2026.

The new framework has triggered an obvious question: If UPI starts carrying an MDR, should consumers and merchants start preferring debit cards or credit cards instead?

The answer is more complicated than simply comparing payment methods.

The new UPI framework applies an MDR of 0.4% on specified person-to-merchant (P2M) transactions above ₹2,000, with the charge capped at ₹300. Importantly, this is a merchant-side charge, not a fee that customers have to pay for using UPI.

What exactly is changing with UPI?

Under the new structure, ordinary UPI payments to eligible merchants will broadly fall into different categories.

UPI transaction	MDR
Up to ₹2,000	Zero
Above ₹2,000	0.4%
₹75,000 and above	Capped at ₹300

So, a ₹5,000 transaction would generate an MDR of ₹20, while a ₹10,000 transaction would generate ₹40.

For a ₹1 lakh transaction, 0.4% would theoretically be ₹400, but the cap limits the MDR to ₹300.

The important point is that the customer does not directly pay this MDR.

Banks have also been advised that merchants should not pass the MDR on to customers, while UPI apps are not permitted to impose platform fees or hidden charges on customers because of this MDR.

Does that mean UPI is becoming expensive?

Not necessarily.

For consumers, an eligible UPI transaction will continue to work much like it does today. The MDR is part of the payment-processing economics between merchants, banks and payment-service providers.

There is another important protection for everyday UPI users: payments of up to ₹2,000 remain outside the new MDR structure.

According to the government, approximately 96% of P2M UPI transactions will remain unaffected by the new framework. Person-to-person UPI transfers also remain free.

That means the change is primarily relevant when making larger payments to qualifying merchants.

UPI vs debit card: how do the costs compare?

The more interesting comparison is from the merchant's perspective.

NPCI has indicated that UPI's 0.4% MDR is lower than the indicative charges associated with conventional card payments.

Debit-card MDR can be as high as 0.90%, according to the framework cited by NPCI.

Consider a ₹10,000 purchase.

• UPI at 0.4% = ₹40
• Debit card at 0.9% = up to ₹90

The actual amount a merchant pays can depend on the applicable arrangement and merchant category, so these should be viewed as indicative comparisons rather than a universal bill for every business.

What about credit cards?

Credit cards operate differently because they offer a credit facility and may provide rewards, cashback, discounts and an interest-free period.

NPCI's cited comparison puts standard credit-card MDR in the 1.5%-2.5% range, while its recent public comparison also used around 2% as an indicative rate.

For a ₹10,000 transaction, that would translate into an indicative merchant cost of roughly:

• UPI at 0.4%: ₹40
• Credit card at 1.5%: ₹150
• Credit card at 2%: ₹200
• Credit card at 2.5%: ₹250

Therefore, the introduction of UPI MDR does not automatically make conventional card payments cheaper for merchants.

Why would anyone still use a credit card?

This is where the comparison becomes more interesting.

A payment method is not chosen only because of the merchant's processing cost.

Credit cards can offer consumers benefits such as:

• Reward points
• Cashback
• Airline or hotel benefits
• Discounts
• Interest-free credit periods
• Additional payment flexibility

Therefore, a consumer may still choose a credit card for a large purchase even though the merchant's processing cost can be higher.

The value proposition for the customer and the cost structure for the merchant are two different things.

One important distinction: credit card UPI is not ordinary UPI

This is an area where consumers could easily become confused.

Scanning a QR code and paying through UPI does not necessarily mean the underlying payment is funded directly from a bank account.

For example, RuPay credit cards linked to UPI and certain pre-sanctioned credit lines have separate treatment because they involve a credit product.

The new 0.4% MDR framework for direct account-funded UPI transactions should therefore not simply be applied to every transaction made through a UPI app.

In simple terms:

UPI is the payment rail, but the source of funds matters.

Small merchants get special protection

The new MDR framework also distinguishes small merchants.

Qualifying Person-to-Person-Merchant (P2PM) businesses receiving up to ₹1 lakh per month through UPI QR codes can continue to receive payments without MDR under the special framework.

This is particularly relevant for neighbourhood businesses, street vendors and other small merchants that fall within the specified category.

So, the new system does not mean that every small shop accepting UPI will suddenly start paying 0.4% on every transaction.

Some sectors have different rates

The framework also contains special provisions for certain sectors.

For specified essential or thin-margin categories, transactions above ₹2,000 can attract a flat ₹5 MDR rather than the standard 0.4% rate.

Capital-market transactions have another special rate: 0.02%, subject to a ₹300 cap, according to the framework reported by ET.

This means there is no single MDR number that applies to every UPI merchant transaction.

So, which payment method should consumers understand as "cheapest"?

There isn't one universal answer because the costs are distributed differently.

For the consumer, ordinary UPI remains free under the new framework.

For the merchant, the headline UPI MDR of 0.4% is lower than the indicative debit- and credit-card MDR figures cited by NPCI.

For a credit-card user, however, rewards and other benefits can have value that does not exist with a normal bank-account UPI payment.

The more useful way to look at the new system is therefore:

UPI remains a low-cost payment option for merchants, while credit cards continue to compete through customer rewards and credit benefits.

What should UPI users remember?

The biggest misconception is that "UPI MDR" means customers will suddenly be charged 0.4% every time they scan a QR code.

That is not what the new framework says.

The MDR applies to specified merchant transactions and is a merchant-side processing charge. UPI payments up to ₹2,000 remain outside the standard MDR, person-to-person transfers remain free, and qualifying small merchants have additional protection.

So, for an ordinary consumer, the introduction of MDR does not fundamentally change the convenience of making a UPI payment.

The bigger change is happening behind the QR code — in how the payment ecosystem distributes the cost of processing transactions.

Bottom Line

UPI's move to a limited MDR structure marks a significant change from its earlier zero-MDR merchant model, but it does not mean UPI is suddenly becoming a paid service for consumers.

At 0.4%, with a ₹300 cap for the standard applicable category, UPI's merchant-side cost remains below the indicative rates cited for many debit and credit-card transactions.

For consumers, the practical choice will continue to depend on the transaction, the merchant, the source of funds and the benefits attached to the payment method.

The QR code may look the same. The economics behind the payment are changing.