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Data matching

Annual Report

Purpose:  To allocate IRD numbers to individuals within the child support scheme, in particular qualifying and dependent children by confirming their birth details.

BDM disclosure to IR: BDM provides birth information covering the period from 1 April 1994 to the extraction date. The birth details include the full name, date and place of birth, birth registration number and full name and date of birth of both mother and father. 

Compliance: Compliant. 

Technical information

Information matching provision

Births, Deaths, and Marriages Registration Act 1995, S.78A

Year authorised

2001

Year commenced

2013 

Programme type

Auditing data quality

Updating data

Eligibility for entitlement

Unique identifiers

Birth registration number

System description

This programme enables Inland Revenue to allocate an IR number to a child by confirming identity details held by Inland Revenue or in a child support application against the details held in the birth registration extract provided by DIA. Where birth information is not matched, Inland Revenue requires that the customer provide details of identity, such as an overseas birth certificate.

Each quarter, BDM provides IR with an encrypted CD of birth records for the period from 1 April 1994 to the extract date. The birth details include the full name, birth date and place, birth registration number and full name and date of birth of both mother and father. 

The daily matching process involves an IR staff member entering in the child’s full name and date of birth into an application that compares the input data to the birth information held in a stand-alone birth register database. An exact match between the birth and parent information provided by the customer and the details held in the database results in IR establishing the child’s tax file number.

Where there is a partial or no match, IR staff request alternative information from the customer to confirm the child’s identity as a qualifying or dependent child.

Recent activity

  2013/14 2014/15 2015/16
Searches completed 232,600 53,730 3,136
Potential matches 177,401 39,351 1,541
IR numbers allocated 7,720 4,890 384

2012/13 historical process

  2012/13
Children without IR number for child support (as at January 2013) 27,658
Children with tax number already allocated by IR but not assigned in child support records 3,718
Birth record confirmed for existing child in child support scheme (IR number allocated) 20,271
Child birth record not found (likely born overseas) 3,485
Birth record confirmed for new child in child support scheme (IR number allocated) 2,884