India's Unified Payments Interface (UPI), operated by the National Payments Corporation of India (NPCI), has emerged as the world's largest retail fast-payment system by transaction volume, according to an International Monetary Fund (IMF) report. A decade after its launch, UPI is not only reshaping domestic commerce but is also expanding its footprint across 11 countries, cementing India's standing as a global digital payments leader.

A Decade of Explosive Growth

The scale of UPI's rise is staggering. According to government data, annual transaction volume surged to 241.62 billion in the financial year ending March 2026, up from a mere 17.8 million in 2016-17. Transaction value over the same period leapt from ₹7,000 crore to ₹3.14 lakh crore — a transformation that has drawn comparisons to no other payment network in the world. The system has helped bring large sections of India's population into the formal economy, making electronic payments integral to everyday commerce.

Merchant Fees on the Horizon

As UPI enters its second decade, the Indian government is reportedly asking certain merchants to begin paying for the service — a shift from the zero-fee model that fuelled its mass adoption. The rationale is sustainability: running the network carries real costs for banks and payment companies. According to reports, a predictable revenue stream would give financial institutions greater incentive to invest in cybersecurity, fraud detection, and dispute resolution, while also funding the next phase of UPI's evolution — including credit line integration and expanded cross-border transfers.

Rohit Arora, co-founder and CEO of fintech firm Biz2Credit, was quoted as saying that 'some cost recovery from merchants was inevitable after so many years of free use.' Industry observers note that comparable systems in Asia have already adopted tiered pricing. Indonesia operates a rate structure that varies by merchant category and transaction size, while Malaysia's DuitNow applies merchant charges that differ by bank or payment provider, with waivers available in select cases.

UPI Goes Global: 11 Countries and Counting

The UPI network is now live in 11 countries, including Singapore, the United Arab Emirates, France, Mauritius, Nepal, Bhutan, Qatar, Sri Lanka, Cambodia, Greece, and Uzbekistan. Indian tourists, business travellers, and students can make direct person-to-merchant (P2M) payments from their Indian bank accounts, eliminating foreign exchange markup friction and reducing dependence on international cards or cash.

An expert cited in reports noted that 'several Asian and Global South systems have studied UPI precisely because it proved you can scale without surrendering the switch to Visa, Mastercard or a foreign boardroom.' The international roll-out is seen as a strategic move to advance digital public infrastructure cooperation and strengthen India's soft power in the payments space.

Why the World Is Watching

The underlying challenge UPI faces — how to sustain a free-to-use, high-volume payments network over the long term — is not unique to India. Every country building national payment infrastructure confronts the same cost-versus-access tension. India's approach to resolving it, particularly how it structures merchant fees without dampening adoption, is being closely watched by nations across the Global South who are designing their own interoperable payment systems. The outcome of this transition will likely shape the global template for public digital finance infrastructure for years to come.