India vs Vietnam · Real-time payment systems compared
| Capability | IMPS | NAPAS 247 |
|---|---|---|
| QR Code Payments | — | ✓ |
| Wallet Support | — | — |
| 24/7 Availability | ✓ | ✓ |
| Cross-Border | — | — |
| ISO 20022 | — | — |
| Request to Pay | — | — |
| Open API | ◐ | ◐ |
| Alias/Proxy | — | ✓ |
Immediate Payment Service is India's original 24/7 real-time interbank transfer system launched by NPCI, and the foundational infrastructure that UPI was later built upon. IMPS uses MMID (Mobile Money Identifier) and mobile number for addressing, supports transfers up to INR 5 lakh, and connects banks via the National Financial Switch. While UPI has overtaken it for consumer payments, IMPS remains widely used for direct bank-to-bank transfers and backend settlement.
Vietnam's 24/7 instant interbank transfer system operated by the National Payment Corporation of Vietnam (NAPAS) under State Bank of Vietnam oversight. NAPAS 247 connects all major domestic banks for real-time transfers via account number, card number, or phone number. The system has been a cornerstone of Vietnam's rapid cashless payment adoption, with the government targeting 80% of adults with bank accounts by 2025. It also supports QR payments through VietQR, an interoperable QR standard similar to Thailand's PromptPay QR.