To make use of Electronic Data Interchange (EDI), a contractor
must be registered with the Electronic Business Unit (EBU).
To register, a contractor can use one of the following
Electronic Business Unit
Information Management Systems
Following registration, a representative from the unit will contact the applicant to discuss what happens next and the way forward.
If you are asked how a contractor registers or gets to use CIS
online services to file monthly returns, you should direct them to
the CIS online website. The address for this is www.hmrc.gov.uk.
From there the contractor should select CIS online from the 'do it
online' section and follow the on screen instructions.
To register for CIS online contractors will need both their PAYE scheme reference and their Accounts Office reference.