“Beyond Borders: Reimagining CBDCs, Stablecoins and RTGS for Cross-Border Settlement”
Date: 26 September, 2025 (Friday)
Time: 02:00 PM to 03:00 PM SGT
Presenter: Boonthicha Sae-Jia, NUS PhD Student
1. Inefficiencies in Current Cross-Border Payment Systems
The existing cross-border payment system is often slow, expensive, and inefficient due to its reliance on traditional correspondent banking networks. Transactions typically involve multiple intermediaries, leading to settlement times of two to three days and transaction fees of around 1.5%. Payments between countries frequently pass through major currency clearinghouses such as the US dollar or euro systems, which adds further delays and operational costs. These structural limitations create scalability challenges and increasing dissatisfaction among businesses that require faster and more cost-efficient international transactions.
2. Global Efforts to Modernize Payment Infrastructure
To address these challenges, international initiatives such as the G20 roadmap aim to modernize cross-border payments by improving speed, access, transparency, and operating hours. Proposed measures include expanding access to real-time gross settlement (RTGS) systems to non-bank participants and implementing the ISO 20022 messaging standard to improve interoperability and data consistency. Although many RTGS systems have adopted the new messaging standard, extending operating hours to a full 24/7 model remains difficult due to legacy infrastructure and operational constraints.
3. Role of Blockchain, Stablecoins, and CBDCs
Emerging technologies such as blockchain, stablecoins, and central bank digital currencies (CBDCs) are being explored as alternatives to improve payment efficiency. Stablecoins provide fast settlement and lower transaction costs but face significant regulatory and transparency concerns. Their decentralized nature makes ownership verification, auditing, and sanction compliance more difficult. In contrast, wholesale CBDCs offer stronger transparency through regulatory oversight, but their integration with existing systems can limit cost efficiency and increase operational complexity.
4. Operational and Integration Challenges
Despite their potential benefits, both stablecoins and CBDCs face integration challenges with existing financial infrastructure. RTGS systems still rely on manual processes and limited operating hours, which restrict real-time settlement and reduce efficiency. Wholesale CBDCs must also interact with legacy systems such as RTGS, which can offset some of the advantages offered by blockchain-based technologies. As a result, modernizing cross-border payment systems requires upgrading legacy platforms, improving interoperability, and gradually integrating new technologies while maintaining regulatory compliance and financial stability.