The Child Support Agency figures show it has the wrong contact details for about 15 percent of its clients.
The Agency's Bill Volkers says there's a number of reasons why people are slipping through the net.
The CSA is looking to update its database as changes being delivered during 2007 and 2008 will require all CSA clients to be contacted.
Bill Volkers from the CSA saidThere are some people who are avoiding their responsibilities but we find in the vast majority of cases that people do want to do the right thing. Often it's just a matter when they've moved, they have list of contacts like electricity and telephone and all those sorts of things and they just forget to notify the child support agency.
Click here to discuss any aspects about the new Child Support legislation
Ed Dabrowski, Federal Director of the Shared Parenting Council saidThe SPCA is continuing to deliver to various group and affiliate members further details of the vast reform agenda being undertaken by the Child Support Agency. Changes, when they come into effect in July 2008, will affect the way the formula is calculated and impact Family Tax benefit A and B.
It is important that CSA payers start to become familiar with the new legislation components and respond any queries and comments to the Council so that feedback can be provided to the Child Support Agency through appropriate reporting channels.