Clearing House Automated Payment System (CHAPS): UK High-Value RTGS Explained

It’s important for any country’s financial system to enable quick and secure money transfers involving large amounts. Hence, a high-value payment system forms the backbone of a country’s financial infrastructure. 

Financial markets are ever-expanding, and as they get bigger and more connected, many countries are updating their payment systems to be more reliable and easier to understand. In the United Kingdom, we can see this change happening with CHAPS, the main RTGS system used for making big sterling payments quickly and safely. Let’s explore CHAPS in detail in this blog.

Clearing House Automated Payment System, or CHAPS for short, is the UK’s high-value payment system, based on the RTGS framework. It’s used extensively for settling same-day, time-critical interbank payments.

The CHAPS payment system was started in London in February 1984 by the Bankers' Clearing House to help banks settle payments electronically. After December 1985, its operations fell into the hands of CHAPS and Town Clearing Company Limited, which later became CHAPS Clearing Company Limited or CHAPS Co, for short. 

They managed the CHAPS system for years until November 2017, when the Bank of England took over. This move brought the UK’s high-value payment system under the Bank of England’s direct supervision. It was done to modernize the payment infrastructure in the UK. 

1. Customer initiates a CHAPS transfer via bank

The sender of the money logs into their banking app or goes to their bank branch and tells the bank to send money to another person’s bank account. They enter the account details and the amount to be sent, and the bank checks if the account details are correct and if sufficient funds are available. 

2. Bank submits payment instruction

Once the payment request is accepted, the sender’s bank sends the payment instruction into the CHAPS network, which is integrated with the Bank of England’s RTGS infrastructure.

3. Liquidity verified in RTGS account

Before sending the payment, the system checks if the sender’s bank has enough money in its account at the Bank of England.

4. Individual payment settled in real time

If the bank has money, the payment is processed right away, in real-time. Unlike systems that use net settlement, each CHAPS transaction is settled individually (gross) rather than being bundled with other payments.

5. Irrevocable settlement finality

When the payment is done, it cannot be undone. The receiving bank credits the beneficiary’s account and completes the transfer.

Most payments processed through the Clearing House Automated Payment System arrive on the same day if the payment is made before the CHAPS cut-off time. 

CHAPS is used for time-sensitive, high-value transactions that require same-day settlement. Typically, CHAPS payments get completed within a few hours. However, since cut-off times apply, transfers initiated late in the day may be processed on the next working day. 

In general, timings for the CHAPS payment system are weekdays between 6am and 6pm for bank-to-bank transfers. But it could be that your bank might have its own cut-off time.

Although both CHAPS and BACS move money electronically between UK bank accounts, they serve different purposes. CHAPS is more speed-focussed and a good choice for big and important fund transfers that are time-sensitive. 

Whereas BACS (Banker’s Automated Clearing System) is better for handling payments of a recurring nature, like salaries and direct debits. For these kinds of payments, predictability and cost-efficiency are more important.

Here’s a tabular comparison between CHAPS and BACS:

SWIFT is a financial messaging network. It sends secure payment instructions between banks, but the actual settlement happens later through correspondent banking relationships, through settlement rails like CHAPS. 

This table depicts the clear difference between CHAPS and SWIFT for clarity:

To get an idea of CHAPS’s role in global finance, it is helpful to look at other big payment systems in the United States. The United States has a system called Fedwire, which is like CHAPS in the United Kingdom. Fedwire is a system that lets banks settle payments right away, operated by the Federal Reserve. 

Alongside it is CHIPS (Clearing House Interbank Payments System), the largest private sector USD clearing and settlement system in the world, which is operated by The Clearing House, processing high-value payments not in real-time, but through a net settlement mechanism. 

With this context in mind, let’s look at CHAPS. In 2023, it processed around 50 million payments that were worth over £92 trillion. These big numbers clearly show that CHAPS is as big as other major high-value payment systems in the world.

The Clearing House Automated Payment System is primarily used by the following: 

1. UK banks

Banks use CHAPS for large interbank settlements and liquidity management. They meet their daily interbank fund transfer obligations through CHAPS by either participating directly as settlement members or indirectly through a direct participant. There are over 35 direct participants of CHAPS, and several thousand indirectly participating financial institutions.

2. Corporate treasury departments

Corporate treasury departments use CHAPS to execute high-value supplier and contractor payments, particularly where same-day finality is critical.

3. Law firms

Law firms are one of the most frequent everyday users of CHAPS, particularly for property completions. This is because on the day a property deal is made, a lot of money needs to be moved, like mortgage funds and payments for buying the property. CHAPS makes sure these payments go through successfully, preventing any delays. 

4. Financial institutions

Financial institutions such as investment managers and insurers use CHAPS to move large sums between counterparties. It is also used for securities settlement linked to payment finality, as well as FX transactions that require same-day sterling leg settlement.

5. Government entities

The Bank of England operates CHAPS, and several major public-sector bodies hold accounts at the Bank of England, which allows them to participate directly in the system. The most prominent example is HM Treasury’s account managed through the Government Banking Service (GBS), which processes large-value government payments through CHAPS.

For businesses, CHAPS plays an important role in making large-value and time-sensitive payments. Companies often use CHAPS to make payments to their suppliers, and since most orders are in bulk, the payments are high-value. And any delays could disrupt operations or severely strain relations.

It is also widely used in real estate transactions, where funds must reach the seller on the same day for the deal to complete. In corporate finance, CHAPS supports mergers and acquisitions (M&A) settlements, where large sums need secure and immediate transfer. 

Moving large amounts of money between accounts on the same day also helps businesses manage cash flow quickly, as and when needed. Lastly, since each payment is processed immediately and cannot be reversed, both sides can be confident that the money has been successfully transferred.

While CHAPS works well for high-value payments domestically in the UK, emerging Fintech options can provide supporting infrastructure when sending payments internationally.  

Xflow provides alternative cross-border payment rails that enable faster international transfers. The platform also supports multi-currency settlement, allowing businesses to receive payments in different currencies more efficiently. 

You must have heard of stablecoins, which move money on blockchain rails, enabling near-instant settlement across borders. Similarly, Xflow focuses on modern payment infrastructure and alternative settlement rails that allow businesses to move money internationally with greater speed, transparency, and multi-currency flexibility, foregoing the need for traditional banking.

• Central bank settlement accounts: CHAPS payments settle through central bank settlement accounts held at the Bank of England. Participating banks maintain balances in these accounts, meaning payments are backed by central bank money rather than private bank credit, adding a strong layer of security to the system.
• Liquidity Monitoring:  Throughout the day, the system monitors the liquidity available in each participating bank’s account. Banks must maintain enough funds to process outgoing payments, ensuring transactions can be completed smoothly without delays.
• Immediate settlement finality: In simple terms, once a CHAPS payment is processed, it cannot be reversed once it has settled.
• Reduced systemic risk: Because each payment settles individually in real time and is backed by central bank funds, CHAPS helps reduce settlement risk and wider systemic risk within the financial system.

Bank for International Settlements says systemic risk is when one bank can't pay its debts on time, causing other banks to also have trouble honouring their debts. They’ve also noted in published research that real-time gross settlement systems help to reduce the systemic risks in payment systems by providing settlement finality during the day. 

CHAPS eliminates this systemic risk through its RTGS architecture. It provides security against the domino effect that could occur in net settlement systems if a major participant were to fail.

Although CHAPS fees vary from bank to bank, one thing is generally consistent: CHAPS transfers tend to cost more than other UK payment methods. Mainly because the system is built for urgent, high-value payments that require immediate processing and finality of payment. 

By contrast, BACS payments are much cheaper. They run on a batch-processing model over a few days and are typically used for routine transactions like payroll, pensions, or direct debits, where speed is not the priority.

So, while CHAPS may come with a higher fee, the cost is usually worth it when timing matters, where delays could hold up an entire transaction.

Yes, CHAPS is one of the most secure payment systems in the UK.

For starters, it’s operated by the Bank of England, and payments settle using central bank money. This means the transfer isn’t dependent on the financial health of a commercial bank, which adds a strong layer of security to every transaction.

Another reason CHAPS is trusted is the way payments are processed. Each transfer settles individually and in real time, as per the RTGS framework, rather than being grouped together in batches. This reduces the chances of delays or cascading failures within the system.

Finally, once a CHAPS payment is completed, it is final and irrevocable. In simple terms, the money has officially moved and cannot be reversed. That is also why CHAPS is widely used for property purchases, corporate transfers, and other large-value payments. 

The UK is actively working to modernise its wholesale payment infrastructure to have better large-value transaction systems that are faster, safer, and more interoperable with the global system.

The Bank of England’s RTGS Renewal Programme is a big step in this direction. This programme is updating the RTGS system that CHAPS and other big payment systems use. The renewed platform is designed to have better technology and be more flexible, supporting future innovation in the payments ecosystem.

Another important development is the adoption of ISO 20022 messaging. Around the world, countries are turning to this standard, which allows for transmitting structured payment data with each transaction. ISO 20022 is helping to improve transparency and make it easier for payment systems across different countries to communicate with one another.

There are also talks of exploring the possibility of a digital pound (CBDC: Central Bank Digital Currency), which would represent a new form of central bank digital money operating alongside existing payment systems.

All these changes prove that the UK’s vision for wholesale payments is forward-looking. They are seeking to make their payment infrastructure more technologically advanced, interoperable with global systems, and better equipped to support the dynamism of modern finance.

CHAPS is a critical part of the UK’s financial infrastructure and a trusted rail for time-sensitive transactions such as property completions, corporate treasury transfers, and financial market settlements.

Alongside domestic systems like CHAPS, businesses today increasingly rely on fintech platforms such as Xflow to manage international payments more efficiently. Xflow provides companies and freelancers with a modern cross-border payment layer for faster and more transparent settlement of payments. 

With flat transaction fees, no hidden FX markups, and conversions close to mid-market exchange rates, Xflow helps businesses move money globally with greater efficiency and transparency. We’ve simplified the international payment receipts journey by enabling quick one-day transfers, which are also cost-effective. Explore our pricing structure here.