Real-time payments infrastructure

UPI and Pix have made real-time payments the dominant retail-payment rail in emerging markets

India's Unified Payments Interface (UPI) processed 22.35 billion transactions in April 2026 worth approximately Rs 29.03 lakh crore (~$348B), up 25% year-on-year - an all-time monthly high. UPI now accounts for approximately 50% of all real-time payment transaction volume globally and 85%+ of India's domestic payment volume; over 250 billion annual transactions worth ~$3.4 trillion in 2025. Brazil's Pix, launched in November 2020, processed 6-7 billion transactions per month by late 2025 moving BRL 3 trillion (~$557B) monthly across 160 million users; targeting 45% of Brazil's online sales by end-2026 (up from 42% in 2025) and 50% by 2028. The structural read is that emerging-market real-time payments have already displaced card networks as the dominant retail-payment rail. The lessons - government-mandated bank participation, free or near-free per-transaction pricing, QR-code-based merchant acceptance, smartphone-first UX - are now blueprinting the next wave of national systems.

State of the art (2026)

As of mid-2026 the centre of gravity in real-time payments sits firmly in the emerging markets. India's UPI cleared a record 23.2 billion transactions in May 2026 and accounts for roughly half of global real-time payment volume; Brazil's Pix moves 6-7 billion transactions monthly across 160 million users. In Europe the SEPA Instant Payments Regulation is now binding - euro-area PSPs had to receive instant payments from January 2025 and send them from October 2025 - shifting the live question from mandate to ramp and verification-of-payee compliance. The US lags on scale: FedNow sits near 1,500-1,600 institutions versus an 8,000 target, with The Clearing House's RTP network still larger by value. The open contest now is cross-border interlinking (BIS Project Nexus) versus stablecoin rails.

FedNow is closing the US gap faster than the 2024 'barely adopted' framing implied

FedNow has accelerated meaningfully since its 2023 launch. Participation reached approximately 1,600 financial institutions in 2025 - up 500 over the year, with 100+ joining in Q4 2025 alone. Average daily transactions are ~30,000; total transaction value $853 billion with a $101,435 average payment size; year-on-year volume growth 460%. The Fed is targeting 8,000 total financial institutions on the network. The Clearing House RTP network (private-sector alternative, live since 2017) reached ~1,135 FIs and processed more than $1.3 trillion in 2025, exceeding FedNow in dollar value but trailing in institutional adoption. The combined US instant-payment stack still trails UPI and Pix on absolute volume and on share of total domestic payments - but the 460% FedNow growth rate and the Fed's 8,000-FI target make the earlier 'a decade behind' framing increasingly out of date. The US is closing the gap, though not yet within reach of structural parity by 2027.

EU SEPA Instant mandatory + cross-border linkages + stablecoins reshape the 2026-2028 stack

Three structural changes are converging on the global RTP stack through 2026-2028. First, the EU SEPA Instant Payments Regulation makes instant payments mandatory for all EU payment service providers, with full enforcement landing through 2026-Q4 - the first major Western economy to bind real-time payments at the regulator level. Universal mandatory adoption across the eurozone is the largest single market access addition since UPI launched. Second, BIS-led cross-border RTP linkages (Project Nexus connecting Asian and ASEAN systems, Agora for cross-currency wholesale, Buna for Arab states) are progressing into 2027 commercial test - the first credible challenge to SWIFT correspondent-banking on cross-border retail value. Third, stablecoin payment rails (USDC, PYUSD, Tether) are emerging as an adjacent layer with $1T monthly volume targeted by 2027-Q4; Visa, Mastercard, Stripe, Block, and PayPal are all positioning across both RTP-rail integration and stablecoin-rail integration. The 2027-2028 question is whether stablecoin rails compete with RTP rails or whether the two stack additively for different use cases (RTP for domestic retail; stablecoin for cross-border and programmable payments).