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Victorian legal guide

How is child support calculated in Australia?

General information for people in Victoria · ORLA Connect

Child support in Australia is calculated by Services Australia using a formula based on both parents' incomes, the number and ages of the children, and how much time each parent spends caring for them. Parents can also make their own agreement. Here's how it works.

What the formula looks at

Both parents' taxable incomes (less a self-support amount), the number of children and their ages, and each parent's percentage of care. Higher care generally reduces the amount you pay.

Private agreements

Parents can agree on child support privately through a limited or binding child support agreement, rather than using the formula assessment. Binding agreements usually require legal advice.

When a lawyer helps

If income is disputed, circumstances change, or you want a binding agreement, a family lawyer can advise on your options and get the paperwork right.

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Post your family law matter once on ORLA Connect and get matched with Victorian family firms who explain their approach and fees — privately, before you commit. Free and no obligation.

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Does the amount change with how much time the child spends with me?
Yes — your percentage of care is part of the formula, and more care generally reduces the amount payable.
Can we agree child support privately?
Yes — parents can make a limited or binding child support agreement instead of a formula assessment. Binding agreements usually need legal advice.

This article is general information only and is not legal advice. For advice about your situation, post your matter and a matched Victorian law firm can help.