India’s Unified Payments Interface has become the world’s largest retail fast-payment system by transaction volume, prompting discussions on sustainable funding amid its growing international reach and usage,
India’s Unified Payments Interface has become the world’s largest retail fast-payment system by transaction volume, according to the International Monetary Fund, marking a milestone for the country’s digital payments infrastructure. Built and operated by the National Payments Corporation of India, UPI has shifted from a domestic convenience into a model now watched closely by policymakers and payment operators in other markets.
The scale of its expansion has been striking. Government data show annual transaction volume rose to 241.62 billion in the financial year ended March 2026, up from 17.8 million in 2016-17, while the value of those transactions increased from Rs 7,000 crore to Rs 3.14 lakh crore over the same period. The IMF’s June 2025 note on retail digital payments also identified UPI as the world’s largest real-time payment system by volume, with some reports saying it accounts for about 49% of global real-time transactions.
That success has come with a new question: how to keep the network sustainable as usage keeps climbing. According to the Telangana Today report, India is now considering whether some merchants should begin paying charges to help fund the system’s long-term operation, after years in which UPI has largely remained free for users. The argument for a fee is that banks and payment companies need a predictable revenue stream if they are to keep investing in cybersecurity, fraud detection, dispute resolution and future upgrades.
The case for a more durable funding model is strengthened by UPI’s growing international reach. The network now operates across 11 countries, including Singapore, the United Arab Emirates, France, Mauritius, Nepal, Bhutan, Qatar, Sri Lanka, Cambodia, Greece and Uzbekistan, allowing Indian travellers, students and business users to make direct merchant payments from Indian bank accounts. That cross-border functionality reduces reliance on foreign cards and cash, and it also reflects a broader push for digital public infrastructure cooperation. Other countries have already shown that charging structures can be built into fast-payment systems: Indonesia uses rates that vary by merchant category and transaction size, while Malaysia’s DuitNow applies charges that depend on the bank or payment provider, with waivers in some cases.
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