Whalesbook
India's Payment Landscape: A Tale of Two Systems
India's payment system has developed into two main parts: the Unified Payments Interface (UPI) handles many small retail payments, while the Real-Time Gross Settlement (RTGS) system manages the country's largest financial transfers. The Reserve Bank of India's December 2025 Payments System Report reveals this clear split. UPI, a digital tool, accounted for a massive 85.5% of all payment transaction volumes in the latter half of 2025, yet contributed only 9.5% of the total value. This contrasts sharply with RTGS, which processed just 0.1% of transaction volumes but accounted for a dominant 68.6% of the total value. This shows a key difference between widespread use and the settlement of large amounts.
The Bifurcation's Impact on Financial Flows
UPI's huge volume shows its success in boosting financial inclusion and everyday buying. Its annualized growth rate of 55.8% by volume from CY 2021 to CY 2025, alongside a 43% value CAGR, highlights its wide reach. This surge has led to digital payments making up 99.8% of transaction volumes and 97.8% of values, demonstrating India's rapid digital transformation. But this model of many small transactions strains infrastructure differently than RTGS's system for fewer, larger ones. RTGS systems are built for reliability and final settlement. However, UPI's vast transaction numbers require constant improvements in processing speed and fraud prevention. Global systems, like Brazil's PIX, show how real-time payments can drive growth by simplifying financial solutions. This difference between UPI's everyday use and RTGS's business use reflects a global trend of specialized payment systems for different needs.
A Historical Perspective on Payment Evolution
This split has historical roots. The evolution of payment systems, from early EFTs in the 1870s to credit cards in the mid-20th century and online platforms in the 1990s, consistently shows technology enabling new transaction types and driving specialization. For example, credit cards revolutionized retail payments by offering convenience, changing consumer habits and pushing banks to develop settlement systems. Similarly, the decline of debit cards, with volumes falling by a CAGR of -24.4%, shows how newer, more efficient systems like UPI can quickly replace older ones. This history suggests that while widespread systems like UPI grow, the infrastructure for large settlements will remain key to overall financial stability. Emerging markets like India are increasingly looking to these models to build their own national real-time payment systems.
The Structural Weakness: A Bear Case
While UPI's dominance and RTGS's strength show a modern financial system, potential weaknesses need attention. The huge difference in transaction value between UPI and RTGS means that small retail fraud could add up to large losses because of the sheer number of transactions. Also, UPI's focus on many low-value, low-profit transactions could stress payment providers and banks, forcing them to rely on extra services or new fees. The Reserve Bank of India's report also notes a significant drop in debit card usage, suggesting a possible over-reliance on one main retail payment method, which could be risky if that system faces major disruption. Globally, RTGS systems are built for stability. However, financial markets are increasingly connected, meaning any unlikely shock could spread quickly. Fintech innovation challenges in India, like managing rising digital fraud cases (up 46% in 2023), highlight the ongoing need for strong security to protect all types of transactions.
Future Outlook: Harmonizing the Divide
India's payment system's future depends on balancing the needs of high-volume retail payments with high-value business transactions. Projections show continued strong growth for digital payments, expected to reach $1 trillion by 2026. While UPI is projected to handle 1 billion transactions daily by FY28, signs of saturation mean new uses and system upgrades are needed. Credit cards, now linking with UPI, are expected to be a major growth driver, alongside AI advancements in payment security and personalization. Efforts are also underway for cross-border payments, such as India's involvement in Project Nexus, to improve global interoperability. Ultimately, India's success will depend on sustaining UPI's inclusive growth while safeguarding its high-value settlement systems. This requires ongoing regulatory attention and new technology.