RTGS in Cross-Border Payments: Ultimate Guide

published on 30 August 2025

Real-Time Gross Settlement (RTGS) is a payment system that processes high-value transactions individually and instantly. This makes it a trusted method for secure, fast, and irrevocable payments, especially for cross-border transactions. RTGS reduces risks like settlement delays and currency mismatches, providing clarity and certainty for businesses dealing with large sums internationally.

Here’s what you need to know:

  • How RTGS works: Payments are handled in real time, one at a time, ensuring immediate finality.
  • Why it matters: It eliminates risks, such as non-payment in foreign exchange deals, and is ideal for urgent, high-value transfers.
  • UK’s RTGS system: Managed by the Bank of England, it supports sterling transactions and integrates with global networks.
  • Challenges: High liquidity requirements, limited operating hours, and pre-funding costs can complicate usage.
  • Future trends: Extended operating hours, API integration, and ISO 20022 adoption aim to improve efficiency.

For businesses, RTGS offers unmatched reliability for large payments but requires careful liquidity planning. Expert services, such as those from Oku Markets, can help manage currency risks and optimise payment strategies.

Payment Systems Broadcast #2: The Bank of England’s RTGS CHAPS Renewal Programme

Bank of England

RTGS Setup and Access in the UK

The UK's advanced RTGS system, managed by the Bank of England, plays a crucial role in facilitating high-value cross-border payments.

Bank of England RTGS System Overview

The Bank of England's RTGS system is the backbone of sterling-based high-value payments in the UK. It operates exclusively during designated business hours, ensuring the secure settlement of transactions for regulated institutions.

One of its standout features is its seamless integration with global payment networks. For example, when a UK bank receives an international wire transfer, the sterling portion of the transaction is settled directly through the Bank of England's RTGS system. This integration ensures even the most complex multi-currency transactions are processed with the highest level of security and finality.

Recent updates to the system have improved liquidity management and strengthened its ability to handle the increasing demands of international payment flows.

Access Requirements and Eligibility

Direct access to the RTGS system is reserved for regulated financial institutions that meet strict capital and operational standards. Businesses without direct access rely on correspondent banking relationships to participate. Most UK banks hold RTGS accounts, acting as intermediaries to facilitate high-value cross-border transfers. These banks ensure that transactions benefit from RTGS settlement while meeting all required regulatory standards.

Institutions seeking direct access must demonstrate operational readiness, supported by advanced technology, well-trained personnel, and comprehensive continuity plans. The Bank of England conducts a rigorous review process before granting access, which can take several months to complete.

Settlement Models in UK RTGS

Once access is granted, institutions can choose from different settlement models to suit their specific cross-border payment needs. The real-time gross settlement model processes each transaction individually, providing immediate finality. This is particularly useful for urgent international payments, where certainty and speed are critical.

For securities transactions with international parties, the system offers a delivery-versus-payment (DVP) model. This approach ensures the simultaneous exchange of securities and payments, removing the risk of non-payment in cross-border securities deals. The DVP model is especially valuable for institutional investors managing global portfolios.

The Bank of England also provides liquidity-saving mechanisms, which queue payments during periods of low liquidity and release them once funds are available. This feature is highly beneficial for banks operating across multiple currencies and time zones, as it helps manage liquidity efficiently during overlapping settlement windows.

How RTGS Processes Cross-Border Transactions

Understanding how Real-Time Gross Settlement (RTGS) systems handle cross-border transactions sheds light on the intricate mechanics behind high-value international payments. These systems synchronise multiple players, currencies, and networks to ensure that transactions are completed securely and efficiently.

Cross-Border Payment Process Step by Step

When an RTGS cross-border transaction gets underway, it follows a series of steps designed to ensure secure and final settlement. It all starts with the originating bank, which receives payment instructions from its client. The bank then validates the transaction details, such as the beneficiary's information and compliance with regulatory standards.

Once the originating bank debits the client’s account in real time, pre-settlement checks are carried out. Within seconds, the receiving account is credited. During this process, the Bank of England’s system conducts anti-money laundering (AML) screenings and checks for sanctions compliance. Unlike net settlement systems, RTGS processes each transaction individually. This gross settlement approach reduces settlement risk by avoiding reliance on batch processing.

The final step involves reconciliation and reporting. Both the originating and receiving institutions receive immediate confirmation of the transaction. This real-time feedback allows businesses to plan their next moves without waiting for end-of-day reports - a critical advantage for time-sensitive operations.

These steps highlight how intermediary banks and payment networks play a crucial role in connecting international systems.

Intermediary Banks and Payment Networks

RTGS systems are not standalone operations when it comes to cross-border payments. Instead, they rely heavily on correspondent banking relationships to bridge gaps between national payment systems. For example, if a UK bank processes a payment to the United States, the sterling portion is settled via the Bank of England’s RTGS system, while the dollar leg is handled by the Federal Reserve’s Fedwire system.

To coordinate these transactions, SWIFT messaging comes into play. The MT103 message format carries the payment instructions, while MT202 messages facilitate the actual funds transfer between correspondent banks. These standardised formats ensure consistency and accuracy across different systems and time zones.

For currencies without direct RTGS links, the correspondent banking network becomes essential. A payment from London to Singapore, for instance, might involve three separate RTGS settlements: sterling in London, US dollars in New York (acting as an intermediary currency), and Singapore dollars in Singapore. Each part of the transaction is settled individually through its respective RTGS system.

In some cases, UK institutions can bypass intermediary banks for euro payments by settling directly through TARGET2, simplifying the process.

Currency Conversion and Liquidity Management

Intermediary banks play a central role in currency conversion and liquidity management, both of which are critical for smooth RTGS operations. In cross-border transactions, banks must ensure they have sufficient balances in their RTGS accounts for each currency they trade. Since RTGS systems operate on a real-time gross settlement basis, they do not offer overdraft or credit facilities.

To initiate cross-border payments, institutions must meet pre-funding requirements. This means holding enough funds in their nostro accounts with correspondent banks in the destination currency. For example, a UK bank handling a large euro payment needs to ensure adequate euro liquidity in its TARGET2 account or with its eurozone correspondent bank before the sterling leg settles through the Bank of England’s RTGS system.

The timing of currency conversion is another critical factor. Some banks convert currencies immediately upon receiving payment instructions, locking in exchange rates but requiring immediate liquidity. Others delay conversion until closer to settlement time, maintaining flexibility but exposing themselves to exchange rate fluctuations.

Managing liquidity across time zones adds another layer of complexity. For example, liquidity demands peak during the overlap between London and New York trading hours, while the gap between London’s close and Asia’s market opening requires careful planning to ensure funds are available for next-day settlements.

To tackle these challenges, banks use liquidity management systems that integrate with RTGS networks. These systems offer real-time balance monitoring across multiple currencies and jurisdictions. By doing so, treasury teams can optimise liquidity allocation, minimise the cost of idle funds, and ensure sufficient resources are available for high-value cross-border transactions.

RTGS Benefits and Challenges for International Payments

Let’s delve into the benefits and challenges of Real-Time Gross Settlement (RTGS) systems, particularly for international payments. While RTGS offers clear advantages for cross-border transactions, it also comes with hurdles that businesses must navigate.

Key Benefits of RTGS

The standout feature of RTGS is its immediate settlement finality. Unlike traditional correspondent banking, which can take days to confirm transactions, RTGS processes each payment individually and irrevocably. This means businesses can avoid the uncertainties and risks tied to high-value international transfers, including counterparty default during the settlement process.

Another major strength lies in its transparency and compliance features. Every transaction generates instant confirmations and detailed audit trails. Built-in anti-money laundering (AML) checks and sanctions screening ensure that payments align with UK and international regulations. This level of transparency not only reduces administrative burdens but also helps treasury teams better manage international transactions.

RTGS also enhances liquidity management. Because settlements happen in real time, businesses can predict exactly when funds will be available, making it easier to manage cash flow across different time zones. This is a crucial advantage for organisations handling frequent, high-value transactions globally.

However, these benefits are not without challenges, which can complicate the effective use of RTGS for international payments.

Common RTGS Challenges

One of the biggest challenges is the high liquidity requirement. Since RTGS operates on a gross settlement basis without netting, banks must hold significant balances in each currency they handle. This ties up capital that could otherwise be used elsewhere.

Operating hours are another limitation. For example, the Bank of England’s RTGS system runs from 06:00 to 18:00 on business days. Payments initiated outside these hours must wait until the next operating window, which can cause delays, particularly when dealing with markets in Asia or other regions with different time zones.

Pre-funding costs also add to the complexity. Banks must maintain nostro accounts with correspondent institutions, often with minimum balance requirements. These balances typically generate little to no return, creating opportunity costs that are often passed on to customers through higher fees.

Finally, technical integration poses a barrier, especially for smaller institutions. RTGS systems require advanced infrastructure for real-time processing, which can demand significant investment, making it harder for smaller banks to access the benefits of real-time settlement.

RTGS vs Other Settlement Methods Comparison

Aspect RTGS Correspondent Banking Payment Networks Digital Platforms
Settlement Speed Immediate 1-5 business days 1-3 business days Minutes to hours
Settlement Finality Immediate Delayed confirmation Delayed confirmation Varies by platform
Cost Structure High fees Moderate fees Variable fees Low fees
Liquidity Requirements Very high Moderate Low to moderate Minimal
Operating Hours Limited (06:00-18:00 UK) Extended global coverage 24/7 in many cases 24/7 availability
Transparency Complete real-time visibility Limited tracking Moderate tracking High transparency
Regulatory Compliance Built-in checks Manual processes Automated screening Varies by provider
Technical Complexity High integration requirements Moderate complexity Low to moderate User-friendly interfaces
Settlement Risk Eliminated Present until settlement Present during processing Varies by platform
Currency Coverage Limited to major currencies Extensive global coverage Broad currency support Growing coverage

RTGS stands out when speed and certainty are non-negotiable, but other methods may prove better for businesses prioritising cost efficiency or global reach. The choice depends on factors like transaction value, urgency, destination, and risk tolerance.

For companies handling large-scale cross-border payments, the security and immediacy of RTGS often outweigh the higher costs and operational demands. This comparison highlights why RTGS remains a vital tool for businesses, even as other settlement methods continue to evolve.

Central banks and financial institutions are making strides to improve RTGS systems, addressing current challenges while safeguarding their security and reliability. These upgrades aim to improve cross-border payment capabilities while maintaining the dependable infrastructure that underpins high-value transactions. One significant area of focus is extending operating hours.

Extended RTGS Operating Hours

The Bank of England is actively considering extending RTGS operating hours beyond the current 06:00 to 18:00 schedule. This shift is driven by increasing demand for 24/7 settlement options, particularly from global markets spanning multiple time zones.

Proposals on the table include extending weekday hours to overlap with Asian markets and introducing limited weekend operations for critical payments. However, implementing these changes requires careful consideration of operational costs, including the need for additional staffing, system maintenance, and international coordination.

Such changes could have a big impact on multinational businesses. For example, UK-based firms often need to settle payments with suppliers in the Asia-Pacific region. Under the current schedule, payments initiated outside standard UK banking hours can face delays of up to 24 hours. A manufacturing company making urgent payments to suppliers in Japan or Australia, for instance, would benefit greatly from extended RTGS hours.

Efforts to extend operating hours are not happening in isolation. Central banks across Europe are working together to ensure cross-border compatibility. The European Central Bank's TARGET2 system already operates with extended hours, putting pressure on the Bank of England to follow suit and maintain London's status as a leading global financial hub.

RTGS Integration with New Payment Systems

RTGS systems are also evolving to integrate with emerging payment technologies. The Bank of England has designed its RTGS infrastructure with an API-first approach, enabling seamless connections with faster payment systems, digital currencies, and cutting-edge settlement mechanisms.

One notable advancement is the integration of RTGS with the Faster Payments Service (FPS). This allows high-value payments to combine the speed of FPS with the security and reliability of RTGS. Another key development is the compatibility with Central Bank Digital Currencies (CBDCs), as seen in the Bank of England's ongoing research into a digital pound.

The adoption of the ISO 20022 messaging standard is another game-changer. It enhances the quality of payment data, enabling smoother straight-through processing. This standardisation allows businesses to include more detailed information with their payments, reducing manual intervention and improving transparency in cross-border transactions.

Additionally, real-time liquidity management tools are being developed to help banks optimise their funding strategies. Using predictive analytics, these tools can forecast payment flows and recommend the best times for liquidity provision. This could significantly lower the funding costs that currently act as a barrier to wider RTGS accessibility.

Currency Management Solutions for RTGS

As RTGS systems grow more sophisticated, businesses face new challenges in managing currencies effectively. This is where tailored currency strategies become essential.

Oku Markets plays a crucial role in guiding businesses through these complexities. Their expertise in risk management helps companies align their strategies with the new features of modern RTGS systems, such as extended operating hours and advanced settlement mechanisms.

Forward contracts offered by Oku Markets allow businesses to lock in exchange rates for future RTGS transactions. This provides much-needed certainty in a world where timing and currency fluctuations can heavily influence costs. Extended RTGS hours, in particular, open up new opportunities for strategically timed cross-border payments.

Firms like Oku Markets also provide educational resources and expert insights, ensuring businesses understand how features like API integrations, enhanced messaging standards, and extended hours influence currency risk and operational efficiency.

Moreover, technology integration support helps businesses adapt their treasury systems to the updated RTGS infrastructure. This includes guidance on implementing APIs, formatting data for ISO 20022 standards, and optimising workflows to fully leverage real-time settlement capabilities.

The ongoing evolution of RTGS systems, combined with expert currency management, offers businesses the tools they need to improve cross-border payment efficiency while carefully managing associated risks and costs. These developments are reshaping the way global payments are handled, creating a more dynamic and responsive financial landscape.

Conclusion

RTGS systems play a crucial role in facilitating high-value cross-border payments by offering immediate and irrevocable settlements. The detailed step-by-step process highlights how RTGS streamlines correspondent banking and currency conversion, ensuring efficiency. While it requires meticulous liquidity management and may involve higher costs compared to net settlement methods, its ability to provide secure and final payments makes it indispensable for handling large-value transactions.

Looking ahead, the system is poised for significant enhancements. Developments such as extended operating hours, API integration, and the adoption of ISO 20022 standards are set to make cross-border settlements faster and more efficient, potentially enabling around-the-clock operations.

To fully leverage these advancements, businesses must adopt strategic approaches to currency management. By combining RTGS features with tools like forward contracts and strong risk management practices, companies can maximise the benefits of the system while mitigating risks tied to currency fluctuations and operational challenges.

For businesses aiming to optimise their cross-border payment processes, integrating RTGS with customised currency strategies is essential. Oku Markets provides expert advice and solutions to help manage currency risks and ensure smooth international transactions. As RTGS systems continue to advance, companies that align technical expertise with strategic currency planning will position themselves for success in the global market.

FAQs

How can businesses ensure they maintain adequate liquidity for RTGS pre-funding in cross-border payments?

To ensure sufficient liquidity for RTGS pre-funding in cross-border payments, many businesses rely on pre-funded nostro accounts in major currencies. These accounts allow companies to settle payments quickly and efficiently, meeting their obligations without delays.

In addition, having robust liquidity management tools is essential. These tools help businesses track and manage cash flows in real time, ensuring smoother operations. Extending operating hours across different regions can also play a key role in reducing delays and easing liquidity pressures.

Another effective approach is building strategic relationships with liquidity providers. Pairing this with instant settlement solutions, like RTGS systems, can simplify the process and minimise the risks tied to cross-border transactions.

How can businesses manage the high liquidity demands and pre-funding costs of RTGS systems in cross-border payments?

Managing the liquidity demands and pre-funding costs of RTGS systems calls for a smart and well-thought-out approach. One effective method is extending and aligning operating hours across various time zones, which can help smooth out cross-border transactions and cut down on delays. Tools like liquidity-saving mechanisms and collateral-based systems can also play a big role in making liquidity use more efficient and reducing expenses.

On top of that, strong intraday liquidity management is crucial. This means keeping adequate cash reserves, securing access to dependable credit lines, and actively monitoring liquidity risks. These practices not only help keep costs in check but also ensure that settlement processes run smoothly and efficiently in real time.

How do ISO 20022 standards and API integration improve the efficiency of RTGS in cross-border payments?

The adoption of ISO 20022 standards is transforming RTGS systems for cross-border payments by standardising data formats. This means transactions can include more detailed and structured information, which improves compatibility between financial systems, minimises errors, and boosts the quality of data analysis. The result? Transactions become smoother, faster, and more transparent.

On top of that, API integration takes things a step further by enabling real-time connectivity between systems. By automating processes, it reduces the need for manual work, cuts operational costs, and ensures payments are quicker and more predictable. Together, these advancements are reshaping global payment systems into a more reliable and efficient network, making cross-border transactions far easier for businesses to manage.

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