Real-time payments in India: UPI Global rollout

UPI's international expansion — the linkages with the UAE, Singapore, France, Sri Lanka, and several African markets — has been a quieter story than the domestic volume growth. It's also more interesting operationally.

Written November 2025 from field notes across two corridors.

The design decisions that transferred

Several things NPCI got right domestically that transferred:

• VPA-based addressing. A virtual payment address is easier for a foreign merchant to accept than a full account number.
• Bilateral messaging over a common switch. The routing model that made domestic UPI cheap works cross-border with modest adaptation.
• Refund flow is explicit. The domestic model where refunds go back through the same rail applies internationally, which merchants appreciate.

What doesn't transfer cleanly

Two things that turned out harder than they looked:

• KYC assumptions. Domestic UPI assumes the payer has been KYC'd by an Indian bank. A foreign merchant accepting UPI is trusting that assumption; it's true, but the merchant has to model it explicitly for their own compliance.
• Time-zone edge cases in dispute windows. Chargeback and refund windows measured in "days" behave surprisingly when the payer and merchant are in very different timezones.

The realistic near-term ceiling

The rail is unlikely to displace card networks for foreign-merchant retail in the near term — the merchant discovery problem is still real, and card acceptance is the default assumption in most markets. Where UPI Global does work well is in specific corridors with a large Indian expat population and a small number of high-volume merchant categories.