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Account Switching Service


The Account Switching Services, which includes the Full Switch Service (also known as the Current Account Switch Service) and the Partial Switch Service have been designed to make switching from one bank or building society to another simpler and more reliable for everyone. For full details visit Account Switching Service.

If you are a financial institution and would like to become a participant in either the Current Account Switch Service or the Partial Switch Service, please read the eligibility criteria and on-boarding process below.

Eligibility criteria

The table below lists the criteria that a potential participant must be able to meet to be eligible for either the Current Account Switch Service or the Partial Switch Service.

​Criteria​Full switch service (CASS)​partial switch service
​Carry out business and operate an office within the European Economic Area​Yes​​Yes
​Have the ability to comply on a continuous basis with the technical and operational service definition (the Account Switching Service Definition), and have a PKI solution in place (from a Bacs member bank) ​​Yes​​Yes
​Pay the agreed charges for usage of the service and any other transactional based costs that may apply upon request ​​Yes​​Yes
​At all times, agree to be bound by the Guide and Rules of the Account Switching Service ​​Yes​​Yes
​Be able to send and receive CHAPS and / or Faster Payments. This may be through an Agency Agreement​​Yes​​Yes
​Comply with existing UK regulatory requirements. The Account Switching Service does not guarantee regulatory compliance and this is therefore a matter for each individual participant ​​Yes​​Yes
​Offer, or be about to launch, current accounts (note: the Partial Switch Service also supports a wider set of account types and sectors than the Full Switch Service) ​Yes​​Yes
​Have a Bacs service user number (SUN) specifically for account switching (participants may not necessarily be a direct member of the Bacs Scheme) ​​Yes​​Yes

On-boarding process

The Little Bacs Guide to the Account Switching Service on-boarding process and the Account Switching Service on-boarding process are designed to support applicants wishing to participate in the Account Switching Service. They provide details of the on-boarding process from eligibility and application, through to certification and go-live. Download copies from the Information Hub below or to the right of your screen.

Participation application form and non-disclosure agreement

To apply to use the Account Switching Service, you will need to complete a non-disclosure agreement and an Account Switching Service application form, both are available from the Information Hub below or to the right of your screen.


Links to extra information relating to the page you are on
Information Hub
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