The QR Code That Changed India

Part II: The Price of Free

There is a curious paradox about UPI. The more successful it has become, the easier it is to forget that it costs money to run.

For the user, a UPI payment is almost completely frictionless. We scan a QR code, enter an amount, authenticate the transaction and the money moves. There is usually no visible charge. The experience is so simple that we tend to think of the payment itself as free.

But free to the user does not mean free to the system.

Behind every apparently effortless transaction lies an elaborate infrastructure of banks, servers, telecommunications networks, authentication systems, payment applications and settlement mechanisms. Cybersecurity has to be maintained, fraud has to be detected, systems have to be upgraded and capacity has to keep pace with extraordinary growth. When a system processes billions of transactions every month, even a very small cost per transaction can become a substantial cost in aggregate.

That is the background against which the recent decision to introduce a Merchant Discount Rate, or MDR, on certain UPI transactions needs to be understood.

What is actually being charged?

The headlines have understandably created some confusion. From October 15, 2026, an MDR of 0.4 per cent will apply to eligible person-to-merchant, or P2M, UPI transactions above ₹2,000. For transactions of ₹75,000 and above, the charge will be capped at ₹300. A ₹10,000 payment, for example, would attract an MDR of ₹40; a ₹50,000 payment, ₹200; while a ₹1 lakh payment would attract only the ₹300 cap.

But several features are equally important—and have received much less attention.

Person-to-person payments remain free. Merchant payments up to ₹2,000 remain free. Small merchants qualifying under the P2PM category, with UPI collections of up to ₹1 lakh a month, also remain exempt. Certain sectors have specially prescribed rates, including a flat ₹5 charge for specified transactions in categories such as railways, telecom, insurance and fuel.

Most importantly, this is not a charge on the consumer. It is an MDR within the merchant payment ecosystem. The stated framework does not permit the merchant to pass the MDR on to the customer.

The distinction matters. A headline saying that “UPI will now be charged” conveys a very different impression from the actual policy.

Why was UPI free in the first place?

There was a good reason for keeping UPI free when it was being established.

In the early years, India had a different problem: adoption. The objective was to persuade consumers and merchants to move away from cash and towards digital payments. Any charge imposed on a small merchant accepting a ₹50 or ₹100 payment could have worked against that objective.

The zero-MDR regime helped UPI acquire scale and become a habit. Government support also played a role. From 2020, the government mandated that MDR should not be collected on UPI and RuPay debit-card transactions. RBI itself has noted the policy tension clearly: low costs can encourage digital adoption, but if costs are too low to be remunerative, they can discourage investment in the payment ecosystem.

That was a sensible policy for a system trying to establish itself.

But UPI is no longer trying to establish itself.

It has arrived.

When free becomes expensive

The question now is whether a payment system processing more than 24 billion transactions a month can continue indefinitely without a sustainable commercial model.

The answer seems difficult to avoid.

A bank cannot operate its technology platform without expenditure. A payment application cannot maintain servers and cybersecurity without expenditure. Fraud detection is not costless. Nor is the continual improvement in speed, reliability and security that users have come to expect.

Indeed, the very success of UPI increases these responsibilities. If a payment system is used occasionally, an interruption is inconvenient. If it has become the principal digital payment rail for a vast economy, an interruption can have much wider consequences.

There is therefore a fundamental distinction that is often lost in the current debate: free access is not the same thing as free infrastructure.

We do not normally expect a road to be free of cost to the motorist and therefore conclude that maintaining the road should cost nothing. Nor do we expect the electricity grid or telecommunications network to remain permanently dependent on somebody else bearing all its costs.

Digital infrastructure is infrastructure nevertheless.

But why charge the merchant?

This is perhaps the most legitimate question raised by the new arrangement.

A merchant may reasonably ask why he should pay when UPI is essentially a bank-to-bank transfer and when the digital payment itself costs him no more effort than receiving cash. Small merchants operating on narrow margins have particular reason to be cautious. Retail associations have already expressed concerns that MDR could encourage some businesses to revert to cash or pass costs indirectly to customers.

These concerns should not be dismissed.

But neither should the economic value that a digital payment system creates for merchants be ignored. A digital transaction eliminates the need to handle cash, reduces the risks associated with keeping money on the premises, creates an electronic record and can make reconciliation and accounting easier. For larger merchants and businesses, the benefits can be considerable.

The relevant question, therefore, is not whether a merchant should ever pay for a payment service. Merchants already pay for card-based payment systems, where MDRs are generally higher. The question is whether the charge is proportionate, predictable and structured in a manner that does not undermine the enormous gains that UPI has already produced.

At 0.4 per cent, the new UPI MDR is significantly below typical credit-card MDRs, which are generally in the range of 1.5–2.5 per cent, and below the applicable rates for many debit-card transactions.

The real test is sustainability

There is, however, another reason to look beyond the immediate controversy.

UPI has become too important to be allowed to stagnate. It will need continuing investment in cybersecurity, fraud prevention, resilience, capacity and innovation. It will also have to accommodate new forms of payment, new participants and eventually much greater international interoperability.

The question is therefore not simply how to pay for today's UPI. It is how to ensure that tomorrow's UPI is better than today's.

The Reserve Bank has long recognised this tension in the economics of payment systems: high costs can discourage adoption, but costs that are too low to remunerate participants can discourage investment. The policy challenge is to find a balance between affordability and sustainability.

The present framework attempts such a balance. It protects the ordinary user, protects small-value transactions and shields qualifying small merchants, while asking larger commercial transactions to bear a modest part of the cost of the infrastructure from which they benefit.

Whether 0.4 per cent is precisely the right number is a matter that can—and should—be evaluated over time. Whether the revenue is distributed fairly among banks, payment service providers and other participants is equally important. And the prohibition on passing the charge to consumers will need to be monitored carefully.

But these are arguments about the design and implementation of MDR, not necessarily arguments against the principle of having a sustainable revenue model.

The end of the free lunch?

There is an irony here. For years, we celebrated UPI precisely because it made something complicated look free and effortless. We may now have to accept that sustaining that achievement requires us to understand the economics beneath the simplicity.

The choice need not be between an expensive payment system and a free one. It can be between a system that is free at the point of use but sustainably financed, and one that is apparently free until the infrastructure begins to suffer from underinvestment.

The distinction is important.

India should certainly guard the extraordinary inclusiveness of UPI. The ₹20 payment to the vegetable vendor, the ₹100 transfer between friends and the small purchase at the neighbourhood shop should not become casualties of the search for commercial sustainability.

But there is no compelling reason why a large commercial transaction should necessarily enjoy the same subsidy.

The little QR code has already changed India. The next challenge is to ensure that the infrastructure behind it remains strong enough to support the next stage of the revolution.

And that brings us to a much larger question.

If India has succeeded in building a digital payment system at a scale that is attracting attention across the world, can UPI become more than an Indian payment system? Can it become part of India's digital economic engagement with the world?

That is the story of the third part.

(Uday Kumar Varma is an IAS officer. Retired as Secretary, Ministry of Information & Broadcasting)