Bank for International Settlements’ (BIS) Project Nexus
Scope: India, Malaysia, the Philippines, Singapore, and Thailand (with the potential for further expansion).
An experimental project by the BIS Innovation Hub in 2021, Project Nexus aims to connect the Instant Payment Systems (IPS) of different countries to enable cross-border payments from Sender to Recipient within 60 seconds (in most cases). BIS is working with the central banks of India, Malaysia, the Philippines, Singapore, and Thailand, which have established a managing entity, the Nexus Scheme Organisation (NSO), to oversee the live implementation. The European Central Bank (ECB) announced that the Eurosystem intends to join Nexus as a special observer as part of exploratory work on linking its TARGET Instant Payment Settlement to other fast payment systems.
Pix
Scope: Brazil, Argentina, Chile, Paraguay, Portugal, and the US
Created by the Central Bank of Brazil, Pix is Brazil’s real-time payments network and moves more money than cards or cash, allowing consumers to pay by scanning a QR code. The system has since expanded across several Latin American (LATAM) countries, the US, and Portugal. Pix Roaming (pioneered by companies such as PagBrasil) allows international users to pay Brazilian merchants via Pix QR codes or keys directly from their home banking/wallet apps. Brazilians can also use Pix to pay merchants in other countries, with real-time conversion and settlement.
UPI-PayNow link
Scope: India and Singapore
Operational since July 2025, the India-Singapore UPI-PayNow link enables real-time cross-border remittances, merchant payments, and travel spends. The project began in 2022, but full rollout was delayed by technical challenges and the need to onboard participating banks on both sides.
The UPI-PayNow linkage enables instant, real-time transfers using only a mobile number or UPI ID, without requiring registration on the other country’s payment platform. The link is expected to halve transaction costs, enhance digital connectivity, and support small businesses and families reliant on international transfers. Definitive performance statistics are yet to be made available.
PromptPay–PayNow link (PPPN)
Scope: Singapore and Thailand
PPPN launched in April 2021, connecting the fast payment systems of Singapore (PayNow) and Thailand (PromptPay) via cross-border gateways operated by the respective systems operators (BCS and ITMX, respectively).
The linkage enables individuals to make real-time, low-cost transfers of up to SGD 1,000 (Singapore dollars)/THB 25,000 (Thai baht) (approximately $787–$791) per day between Thailand and Singapore, using only the recipient’s mobile number. Information on the initiative’s success is sparse; the World Economic Forum reported that PPPN processed more than 65,000 cross-border transactions per month, with transaction sizes averaging $150–$ 200 per transfer as of mid-2022.
SEPA expansion/interoperability with non-EU schemes
Scope: All 27 EU member states, European Economic Zone members, as well as the UK, Switzerland, Andorra, Monaco, San Marino, and Vatican City.
While Single Euro Payments Area (SEPA) payments are limited to the euro currency and the SEPA geographic zone (so not global cross-border like SWIFT for non-euro or worldwide transfers), it is explicitly a cross-border A2A system. In addition to European Union member states, SEPA covers European Economic Area members and other countries, including the UK, Switzerland, and several Balkan states.
SEPA eliminates distinctions between domestic and cross-border euro payments through harmonised rules, formats (like IBAN), and regulations.