Download and complete the Child over 18 in full time secondary education form.
The easiest way to extend child support is online using your Child Support online account through myGov. Only use this form if you can’t apply online.
If you have a child support agreement, you can’t apply to extend your child support online. You must use the form.
Use our guide to help you use your online account to extend child support for your child who’s turning 18.
To fill in this form digitally you will need a computer and Adobe Acrobat Reader, or a similar program. You can download Adobe Acrobat Reader for free. If you can’t complete the form digitally, you can print it, complete it by hand and return it to us following the instructions on the form.
If you have a disability or impairment and use assistive technology, you may not be able to access our forms. If you can’t, please use self service, request someone to deal with us on your behalf, or contact us. We can help you access, complete and submit them.