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HMRC internal manual

Tax Credits Manual

Specialist areas - Specialist Trace: Specialist Trace Unit - IT systems (Info)

Note: Currently, CBIX and CBOL are used to search and check Child Benefit information. However, from February 2018, these will be replaced by HMRC IT systems.

Child Benefit Index (CBIX)

This system can be used to search for the Child Benefit reference number using the

  • child’s name and date of birth
  • customer’s name and address
  • the first three letters of the surname and the first letter of the child’s forename.

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Child Benefit Online (CBOL) System

Enter the Child Benefit reference number to check whether

  • Child Benefit Office holds a NINO for the customer or child
  • the children’s details are correct.

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Access to DWP Data (ADD)

This system holds records for everyone who has a National Insurance number (NINO) and details of any benefits that have been, or are, in payment to them. The following screens can be found on the ADD system. There is a brief description for each of how and why you use it.

  • Account Summary
    • this screen is used to view an individual’s personal and benefit details and, if applicable, details of their partner.
  • Person Trace
    • this screen is used to trace a NINO using a combination of
      • forename
      • surname
      • sex
      • date of birth or approximate date of birth
      • possible NINO
      • address
      • post code.
  • Address Trace
    • this is used to trace details of all NINOs that have had an interest at an address by using a combination of
      • post code
      • building name and number
      • street
      • town.

A successful trace allows you to view Occupancy History details, which shows details of individuals who have used an address.