The way money moves across borders is undergoing a fundamental transformation. Today, countries are dismantling barriers by connecting their domestic digital payment systems, allowing travellers and businesses to transact as seamlessly abroad as they do at home. This shift towards interoperable payments is driven by government cooperation, technological innovation, and the practical need to facilitate cross-border commerce and tourism.

As of February 2026, the Government of India has signed memorandums of understanding with 23 countries for sharing or cooperation on the India Stack, its digital public infrastructure. These agreements focus on replicating India’s digital governance platforms, including digital identity, data exchange, and, notably, digital payments.

India’s Unified Payments Interface ( UPI ), a real-time system enabling instant and secure transactions, is now live in over eight countries, including the United Arab Emirates, Singapore, Bhutan, Nepal, Sri Lanka, France, Mauritius, and Qatar. Driven by the need to serve Indians travelling abroad, UPI’s expansion represents a new model of payment diplomacy.

Indian tourists in the UAE can now use apps like Google Pay, BHIM, or PhonePe by activating “UPI International” to scan NEOPAY or Network International QR codes at retail stores and duty-free shops. They see the amount in dirhams but pay directly in Indian rupees.

Meanwhile, China and Asean nations are strengthening their own linkages to break payment barriers. Since July 2025, Chinese tourists can pay via DuitNow QR at 2.5 million Malaysian shops using Alipay or Weixin Pay. In Thailand, Alipay, WeChat Pay, and UnionPay are now accepted and integrated with the local PromptPay system and Thai bank apps.

Similar bilateral connections are emerging outside traditional payment corridors. Since last October, Hong Kong users have been using the Octopus App to make payments at millions of merchants across Japan via PayPay, with verified users scanning QR codes for seamless HKD transactions, free of transaction fees. At the end of 2025, the e-CNY pilot enabled Singapore travellers to open and top up digital yuan wallets for merchant payments when visiting China.

Despite this progress, some challenges remain. The proliferation of bilateral connections risks creating new forms of fragmentation unless universal standards are implemented.

Regulatory complexity is another obstacle – each cross-border transaction must satisfy multiple countries’ anti-money laundering, data privacy, and foreign exchange regulations simultaneously. There are also infrastructure gaps, as some regions still rely on cash or traditional methods like cheques, slowing digital adoption.

Overcoming these hurdles will require continued coordination among governments, central banks, and private-sector innovators to build a truly connected global payment ecosystem.