You must download our forms and fill them in so they are processed quickly. You can also electronically sign some of our forms. We have help available if you use assistive technology.
Download and complete the Child over 18 in full time secondary education form.
The easiest way to extend child support is online. Only use this form if you can’t apply online.
If your Child Support online account is linked to myGov, sign in now to apply to extend your child support.
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.