2.1.4 Withdrawing an application
If the Registrar has not made a decision either to accept or to refuse an application for a child support assessment, the applicant can withdraw their application.
CSA Act section 32
The person who made an application for a child support assessment can withdraw it if the Registrar has not made a decision on the application, either to accept it or to refuse to accept it (section 32).
The applicant can usually withdraw their application in writing, in person, or by telephone. Services Australia may ask for a withdrawal in writing if it is considered appropriate, as noted in 6.2.1.
If a person withdraws their application, it is as if the application had not been made (section 32(4)).